Toyota Avalon (XX50): Smart Key System(for Entry Function, Gasoline Model)

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Smart Key System(for Entry Function, Gasoline Model)

All Door Entry Lock/Unlock Functions and Wireless Functions do not Operate

DESCRIPTION

If the entry lock and wireless door lock operations cannot be performed, the electrical key and tire pressure monitoring system receiver assembly may be malfunctioning, or there may be wave interference or problems in the communication which is used for the entry and wireless function between the electrical key and tire pressure monitoring system receiver assembly and certification ECU (smart key ECU assembly).

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

The smart key system (for Entry Function, Gasoline Model) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Entry Function, Gasoline Model) after confirming that the communication systems are functioning properly.
Click here
When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
Before replacing the certification ECU (smart key ECU assembly) or main body ECU (multiplex network body ECU), refer to Precaution.
Click here
After repair, confirm that no DTCs are output.
Inspect the fuses for circuits related to this system before performing the following procedure.
Check that there are no electrical key transmitter sub-assemblies in the vehicle.
Before performing the inspection, check that DTC B1242 (wireless door lock control) is not output.
Click here
When replacing the electrical key and tire pressure monitoring system receiver assembly, read the transmitter IDs (tire pressure warning system) stored in the old ECU using the Techstream and write them down before removal.
Click here
It is necessary to perform initialization (Click here ) after registration (Click here ) of the transmitter IDs into the electrical key and tire pressure monitoring system receiver assembly if the electrical key and tire pressure monitoring system receiver assembly has been replaced.

PROCEDURE

1.	INSPECT BATTERY VOLTAGE

(a) Measure the battery voltage.

Standard Voltage:

11 to 14 V

HINT:

It may be possible to tell whether the battery is discharged by operating the horn.

If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

2.	CHECK FOR DTC

(a) Open the driver door using the mechanical key built into the electrical key transmitter sub-assembly.

(b) Check for DTCs.

Body Electrical > Smart Key > Trouble Codes

Result	Proceed to
DTCs are not output	A
DTCs are output	B

GO TO DIAGNOSTIC TROUBLE CODE CHART

3.	CHECK DOOR AJAR WARNING

(a) When the doors are locked by operating the entry lock function with all doors closed, check that the door ajar warning operates.

HINT:

Be sure to check the following before performing the procedure.

Engine switch is off.
All the doors is close.
The lock sensor is on or lock switch is pressed on the electrical key transmitter sub-assembly.
Electrical key transmitter sub-assembly is in the vehicle exterior detection area.

Result	Proceed to
The wireless buzzer does not sound	A
The wireless buzzer sounds	B

GO TO LIGHTING SYSTEM (Proceed to Door Courtesy Switch Circuit)

4.	CHECK POWER DOOR LOCK CONTROL SYSTEM

(a) When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to the switch operation.

Click here

Result	Proceed to
Power door lock function operates normally	A
Power door lock function does not operate normally	B

GO TO POWER DOOR LOCK CONTROL SYSTEM

5.	CHECK KEY DIAGNOSTIC MODE

(a) Check the following antennas in key diagnostic mode.

Body Electrical > Smart Key > Utility

Tester Display
Communication Check(Key Diag Mode)

(1) Check the electrical key antenna (for driver door):

When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the front door outside handle assembly (for driver door), check that the wireless buzzer sounds.

HINT:

Select either channel 1 or channel 2 and perform the key diagnostic mode inspection for each channel.
If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.

*a	0.7 to 1 m (2.30 to 3.28 ft.)

(2) Check the electrical key antenna (for front passenger door):

When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the front door outside handle assembly (for front passenger door), check that the wireless buzzer sounds.

HINT:

Select either channel 1 or channel 2 and perform the key diagnostic mode inspection for each channel.
If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.

*a	0.7 to 1 m (2.30 to 3.28 ft.)

(3) Check the No. 1 indoor electrical key antenna assembly (front floor):

When the electrical key transmitter sub-assembly is at either inspection point, check that the wireless buzzer sounds.

HINT:

Select either channel 1 or channel 2 and perform the key diagnostic mode inspection for each channel.
If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.

*a	Inspection Point

(4) Check the No. 1 indoor electrical key antenna assembly (rear floor):

When the electrical key transmitter sub-assembly is at either inspection point, check that the wireless buzzer sounds.

HINT:

Select either channel 1 or channel 2 and perform the key diagnostic mode inspection for each channel.
If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.

*a	Inspection Point

(5) Check the No. 1 indoor electrical key antenna assembly (inside luggage compartment):

When the electrical key transmitter sub-assembly is at either inspection point, check that the wireless buzzer sounds.

HINT:

Select either channel 1 or channel 2 and perform the key diagnostic mode inspection for each channel.
If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.

*a	Inspection Point

(6) Check the electrical key antenna (outside luggage compartment):

When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the electrical key antenna (outside luggage compartment), check that the wireless buzzer sounds.

HINT:

Select either channel 1 or channel 2 and perform the key diagnostic mode inspection for each channel.
If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.

OK:

Wireless buzzer sounds.

*a	0.7 to 1 m (2.30 to 3.28 ft.)

Result	Proceed to
Key diagnostic mode inspections fail for both channels	A
Key diagnostic mode inspections succeed for both channels	B
Key diagnostic mode inspection succeeds for only one of the channels	C

GO TO STEP 18

GO TO STEP 28

6.	CHECK WAVE ENVIRONMENT

(a) Bring the electrical key transmitter sub-assembly near the electrical key and tire pressure monitoring system receiver assembly and perform a wireless operation 2 or more times*.

*: When the wireless function is operated, channel 1 and 2 are used alternately. If the first wireless operation is performed successfully and the second wireless operation fails, wave interference may be occurring for either channel.

HINT:

When the electrical key transmitter sub-assembly is brought near the electrical key and tire pressure monitoring system receiver assembly, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
If the inspection result is that the problem only occurs in certain locations or at certain times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.
There may be wave interference if the vehicle is near broadcasting antennas, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc. In this case, move the vehicle to a different location and check if there is any improvement.
If a tool for checking radio waves, such as a signal strength meter, is available, move around the area while observing both the LF band (used by the vehicle antenna to form the detection area) and RF band (used by the electrical key transmitter sub-assembly for transmission) to check for locations where there is wave interference.

Result	Proceed to
Wireless function does not operate normally	A
Wireless function operates normally	B

AFFECTED BY WAVE INTERFERENCE

7.	CHECK TRANSMITTER BATTERY

(a) Check the transmitter battery level of the electrical key transmitter sub-assembly that was checked first.

(1) Press and hold the lock switch of the electrical key transmitter sub-assembly for 5 seconds and check the number of times that the LED illuminates.

HINT:

The electrical key transmitter sub-assembly sends voltage information to the certification ECU (smart key ECU assembly) when it is being used. "Yes" is displayed for the Data List item "Key Low Battery" when this voltage information indicates 2.2 V or less.
Click here
Even if the transmitter battery is depleted, it is still possible to start the engine by holding the electrical key transmitter sub-assembly near the engine switch, depressing the brake pedal and pressing the engine switch.

Result	Proceed to
LED illuminates 3 times or more when switch is pressed and held	A
LED does not illuminate when switch is pressed and held	B
LED illuminates once or twice but not a third time	C

GO TO STEP 17

REPLACE TRANSMITTER BATTERY

8.	CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

(a) Check if there is another electrical key transmitter sub-assembly available that is already registered to the vehicle.

Result	Proceed to
Another registered electrical key transmitter sub-assembly is not available	A
Another registered electrical key transmitter sub-assembly is available	B

GO TO STEP 10

9.	ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY REGISTRATION (NEW ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY)

(a) Register a new electrical key transmitter sub-assembly.

Click here

10.	CHECK ENTRY LOCK OPERATION

(a) Using another registered electrical key transmitter sub-assembly, check that the function operates normally.

Result	Proceed to
Entry function does not operate normally	A
Entry function operates normally	B

END (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS DEFECTIVE)

11.	CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - ELECTRICAL KEY AND TIRE PRESSURE MONITORING SYSTEM RECEIVER AND BODY GROUND)

(a) Disconnect the K10 certification ECU (smart key ECU assembly) connector.

(b) Disconnect the K11 electrical key and tire pressure monitoring system receiver assembly connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
K10-18 (RCO) - K11-8 (+5)	Always	Below 1 Ω
K10-19 (RDAM) - K11-2 (DATA)	Always	Below 1 Ω
K10-20 (CSEL) - K11-6 (CSEL)	Always	Below 1 Ω
K11-12 (GND) - Body ground	Always	Below 1 Ω
K10-18 (RCO) or K11-8 (+5) - Other terminals and body ground	Always	10 kΩ or higher
K10-19 (RDAM) or K11-2 (DATA) - Other terminals and body ground	Always	10 kΩ or higher
K10-20 (CSEL) or K11-6 (CSEL) - Other terminals and body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

12.	CHECK ENTRY LOCK OPERATION

(a) Connect all connectors and check that the function operates normally.

Click here

Result	Proceed to
Entry function does not operate normally	A
Entry function operates normally	B

END (CONNECTOR WAS NOT CONNECTED SECURELY)

13.	CHECK ELECTRICAL KEY AND TIRE PRESSURE MONITORING SYSTEM RECEIVER ASSEMBLY

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
K11-12 (GND) - Body ground	Always	Below 1 Ω

(b) Using an oscilloscope, check the waveform.

OK:

Tester Connection

Condition

Tool Setting

Specified Condition

K11-2 (DATA) - K11-12 (GND)

Procedure:

Engine switch off
All doors locked
Electrical key transmitter sub-assembly not inside vehicle
Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area
Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed

5 V/DIV., 500 ms/DIV.

Below 1 V → Pulse generation

(See waveform 1)

*a	Component with harness connected (Electrical Key and Tire Pressure Monitoring System Receiver Assembly)
*b	Waveform 1
*c	Before lock or unlock switch of electrical key transmitter sub-assembly pressed
*d	After lock or unlock switch of electrical key transmitter sub-assembly pressed

REPLACE ELECTRICAL KEY AND TIRE PRESSURE MONITORING SYSTEM RECEIVER ASSEMBLY

14.	CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

(a) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

K11-1 (IG) - K11-12 (GND)

Engine switch on (IG)

10 to 16 V

K11-6 (CSEL) - K11-12 (GND)

Procedure:

Engine switch off
All doors closed

Below 1 V → Pulse generation

*a	Component with harness connected (Electrical Key and Tire Pressure Monitoring System Receiver Assembly)

(b) Using an oscilloscope, check the waveform.

OK:

Tester Connection

Condition

Tool Setting

Specified Condition

K11-8 (+5) - K11-12 (GND)

Procedure:

Engine switch off
Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area
Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed

2 V/DIV., 500 ms/DIV.

Pulse generation

(See waveform 1)

*a	Component with harness connected (Electrical Key and Tire Pressure Monitoring System Receiver Assembly)
*b	Waveform 1
*c	Before lock or unlock switch of electrical key transmitter sub-assembly pressed
*d	After lock or unlock switch of electrical key transmitter sub-assembly pressed

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

15.	REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

(a) Replace the certification ECU (smart key ECU assembly) and perform registration again.

HINT:

For replacement.
Click here
For registration.
Click here

16.	CHECK WIRELESS DOOR LOCK CONTROL SYSTEM

(a) Check that the wireless function operates normally.

Click here

Result	Proceed to
Wireless door lock function operates normally	A
Wireless door lock function does not operate normally	B

END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE)

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

17.	INSPECT TRANSMITTER BATTERY

(a) Inspect the transmitter battery.

Click here

NOTICE:

Do not wrap the lead wire around a terminal, wedge it between terminals, or solder it. The terminal may be deformed or damaged, and the transmitter battery will not be able to be installed correctly.

REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

REPLACE TRANSMITTER BATTERY

18.	PERFORM REGISTRATION

(a) Perform registration of the B code.

Click here

19.	CHECK ENTRY LOCK OPERATION

(a) After completing B code registration, check that the entry lock and unlock functions can be operated 2 times consecutively.

Click here

Result	Proceed to
Entry function does not operate normally	A
Entry function operates normally	B

END (B CODE REGISTRATION FAILED)

20.	READ VALUE USING TECHSTREAM (B CODE)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(d) Enter the following menus: Body Electrical / Smart Key / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Smart Key > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

B Code

B code registration status

No Regd or Regd

No Regd: B code not registered correctly

Regd: B code registered correctly

Body Electrical > Smart Key > Data List

Tester Display
B Code

Result	Proceed to
"No Regd" is displayed on the Techstream	A
"Regd" is displayed on the Techstream	B

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

21.	READ VALUE USING TECHSTREAM (B CODE DIFFERENCE)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(d) Enter the following menus: Body Electrical / Smart Key / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Smart Key > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

B Code Difference

B code mismatch

No or Yes

No: Communication normal

Yes: Communication malfunction

Body Electrical > Smart Key > Data List

Tester Display
B Code Difference

Result	Proceed to
"No" is displayed on the Techstream	A
"Yes" is displayed on the Techstream	B

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

22.	CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

(a) Measure the voltage while checking the Data List on the Techstream.

(1) Connect the Techstream to the DLC3.

(2) Turn the engine switch on (IG).

(3) Turn the Techstream on.

(4) Enter the following menus: Body Electrical / Power Source Control / Data List.

(5) Read the Data List according to the display on the Techstream.

Component with harness connected

(Certification ECU (Smart Key ECU Assembly))

Body Electrical > Power Source Control > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Power Supply Condition

Power supply state

All OFF, ACC ON, IG ON or ST ON

All OFF: Engine switch off

ACC ON: Engine switch on (ACC)

IG ON: Engine switch on (IG)

ST ON: Sending engine start request signal

Body Electrical > Power Source Control > Data List

Tester Display
Power Supply Condition

Standard Voltage:

Tester Connection	Condition	Specified Condition
G40-17 (IG1D) - Body ground	Engine switch off	Below 1 V
	Engine switch on (ACC)	Below 1 V
	Engine switch on (IG)	9 V or higher
G40-16 (ACCD) - Body ground	Engine switch off	Below 1 V
	Engine switch on (ACC)	9 V or higher
	Engine switch on (IG)	9 V or higher

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

23.	READ VALUE USING TECHSTREAM (ACC SW, IG SW)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

ACC SW

Engine switch status

OFF or ON

OFF: Engine switch off

ON: Engine switch on (ACC)

"ON" is also displayed when the engine switch is on (IG).

IG SW

Engine switch status

OFF or ON

OFF: Engine switch off

ON: Engine switch on (IG)

"OFF" is also displayed when the engine switch is on (ACC).

Body Electrical > Main Body > Data List

Tester Display
ACC SW
IG SW

HINT:

If the certification ECU (smart key ECU assembly) misjudges for any reason that the engine switch is on (IG) even though the engine switch is off, the entry lock and unlock functions will be disabled.

Result	Proceed to
The main body ECU (multiplex network body ECU) judges properly that the power source is off when the engine switch is off	A
The main body ECU (multiplex network body ECU) does not judge properly that the power source is off when the engine switch is off	B

TROUBLESHOOT MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

24.	CHECK HARNESS AND CONNECTOR (BODY GROUND, POWER SUPPLY)

(a) Disconnect the G40 certification ECU (smart key ECU assembly) connector.

*a	Front view of wire harness connector (to Certification ECU (Smart Key ECU Assembly))

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
G40-18 (E) - Body ground	Always	Below 1 Ω

Standard Voltage:

Tester Connection	Condition	Specified Condition
G40-15 (CUTB) - Body ground	Always	11 to 14 V

REPAIR OR REPLACE HARNESS OR CONNECTOR

25.	CHECK ENTRY LOCK OPERATION

(a) Disconnect and reconnect the certification ECU (smart key ECU assembly) connectors.

(b) Check that the function operates normally.

Click here

Result	Proceed to
Entry function does not operate normally	A
Entry function operates normally	B

END (CONNECTOR WAS NOT CONNECTED SECURELY)

26.	REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

(a) Replace the certification ECU (smart key ECU assembly) with a new one and perform registration again.

HINT:

For replacement.
Click here
For registration.
Click here

27.	CHECK WIRELESS DOOR LOCK CONTROL SYSTEM

(a) Check that the function operates normally.

Click here

Result	Proceed to
Wireless door lock function operates normally	A
Wireless door lock function does not operate normally	B

END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE)

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

28.	CHECK WAVE ENVIRONMENT

(a) Bring the electrical key transmitter sub-assembly near the electrical key and tire pressure monitoring system receiver assembly and perform a wireless operation 2 or more times*.

*: When the wireless function is operated, channel 1 and 2 are used alternately. If the first wireless operation is performed successfully and the second wireless operation fails, wave interference may be occurring for either channel.

HINT:

When the electrical key transmitter sub-assembly is brought near the electrical key and tire pressure monitoring system receiver assembly, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
If the inspection result is that the problem only occurs in certain locations or at certain times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.
There may be wave interference if the vehicle is near broadcasting antennas, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc. In this case, move the vehicle to a different location and check if there is any improvement.
If a tool for checking radio waves, such as a signal strength meter, is available, move around the area while observing both the LF band (used by the vehicle antenna to form the detection area) and RF band (used by the electrical key transmitter sub-assembly for transmission) to check for locations where there is wave interference.

Result	Proceed to
Wireless function does not operate normally	A
Wireless function operates normally 1 or more times.	B

AFFECTED BY WAVE INTERFERENCE

29.	CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

(a) Check if there is another electrical key transmitter sub-assembly available that is already registered to the vehicle.

Result	Proceed to
Another registered electrical key transmitter sub-assembly is not available	A
Another registered electrical key transmitter sub-assembly is available	B

GO TO STEP 31

30.	ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY REGISTRATION (NEW ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY)

(a) Register a new electrical key transmitter sub-assembly.

Click here

31.	CHECK WAVE ENVIRONMENT

(a) Bring another registered electrical key transmitter sub-assembly near the electrical key and tire pressure monitoring system receiver assembly and perform a wireless operation 2 or more times*.

*: When the wireless function is operated, channel 1 and 2 are used alternately. If the first wireless operation is performed successfully and the second wireless operation fails, wave interference may be occurring for either channel.

HINT:

If the inspection result is that the problem only occurs in certain locations or at certain times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.
There may be wave interference if the vehicle is near broadcasting antennas, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc. In this case, move the vehicle to a different location and check if there is any improvement.
If a tool for checking radio waves, such as a signal strength meter, is available, move around the area while observing both the LF band (used by the vehicle antenna to form the detection area) and RF band (used by the electrical key transmitter sub-assembly for transmission) to check for locations where there is wave interference.

Result	Proceed to
Wireless function does not operate normally	A
Wireless function operates normally 1 or more times.	B

END (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS DEFECTIVE)

32.	CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - ELECTRICAL KEY AND TIRE PRESSURE MONITORING SYSTEM RECEIVER ASSEMBLY)

(a) Disconnect the K11 electrical key and tire pressure monitoring system receiver assembly connector.

(b) Disconnect the K10 certification ECU (smart key ECU assembly) connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
K11-6 (CSEL) - K10-20 (CSEL)	Always	Below 1 Ω
K11-6 (CSEL) or K10-20 (CSEL) - Other terminals and body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

33.	CHECK ENTRY LOCK OPERATION

(a) Connect all connectors and check that the function operates normally.

Click here

Result	Proceed to
Entry function does not operate normally	A
Entry function operates normally	B

END (CONNECTOR WAS NOT CONNECTED SECURELY)

34.	CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

(a) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

K11-6 (CSEL) - K11-12 (GND)

Procedure:

Engine switch off
All doors closed

Below 1 V → Pulse generation

*a	Component with harness connected (Electrical Key and Tire Pressure Monitoring System Receiver Assembly)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

35.	CHECK ELECTRICAL KEY AND TIRE PRESSURE MONITORING SYSTEM RECEIVER ASSEMBLY

(a) Enter key diagnostic mode and select the channel for which the wireless buzzer did not sound.

(b) Using an oscilloscope, check the waveform.

OK:

Tester Connection

Condition

Tool Setting

Specified Condition

K11-2 (DATA) - K11-12 (GND)

Procedure:

Engine switch off
All doors locked
Electrical key transmitter sub-assembly not inside vehicle
Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area
Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed

5 V/DIV., 500 ms/DIV.

Pulse generation

(See waveform 1)

HINT:

Inspection should be performed while the electrical key antenna check in key diagnostic mode is being performed on the failed channel (the channel in which the buzzer did not sound).

*a	Component with harness connected (Electrical Key and Tire Pressure Monitoring System Receiver Assembly)
*b	Waveform 1
*c	Before lock or unlock switch of electrical key transmitter sub-assembly pressed
*d	After lock or unlock switch of electrical key transmitter sub-assembly pressed

REPLACE ELECTRICAL KEY AND TIRE PRESSURE MONITORING SYSTEM RECEIVER ASSEMBLY

36.	REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

(a) Replace the certification ECU (smart key ECU assembly) and perform registration again.

HINT:

For replacement.
Click here
For registration.
Click here

37.	CHECK WIRELESS DOOR LOCK CONTROL SYSTEM

(a) Check that the function operates normally.

Click here

Result	Proceed to
Wireless door lock function operates normally	A
Wireless door lock function does not operate normally	B

END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE)

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

All Door Entry Lock/Unlock Functions do not Operate, but Wireless Functions Operate

DESCRIPTION

When the wireless operation can be used to lock and unlock the doors, communication between the electrical key and tire pressure monitoring system receiver assembly and certification ECU (smart key ECU assembly) is normal. If the entry lock and unlock functions do not operate, the entry cancel function may be set through the customize function, there may be communication problems between the electrical key transmitter sub-assembly and vehicle, or there may be wave interference.

CAUTION / NOTICE / HINT

NOTICE:

The smart key system (for Entry Function, Gasoline Model) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Entry Function, Gasoline Model) after confirming that the communication systems are functioning properly.
Click here
When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
Check that there are no electrical key transmitter sub-assemblies in the vehicle.
Before performing the inspection, check that DTC B1242 (wireless door lock control) is not output.
Click here
Before replacing the certification ECU (smart key ECU assembly) or electrical key transmitter sub-assembly, refer to Precaution.
Click here
After repair, confirm that no DTCs are output.

PROCEDURE

1.	CHECK POWER DOOR LOCK CONTROL SYSTEM

(a) When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to the switch operation.

Click here

OK:

Door locks operate normally.

GO TO POWER DOOR LOCK CONTROL SYSTEM (for Gasoline Model)

2.	CHECK WAVE ENVIRONMENT

(a) Move the electrical key transmitter sub-assembly as described below and perform the operation inspection.

HINT:

When the electrical key transmitter sub-assembly is brought near the front door outside handle assembly (for driver door) or electrical key antenna (outside luggage compartment), the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
If the inspection result is that the problem only occurs in certain locations or at certain times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.
There may be wave interference if the vehicle is near broadcasting antennas, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc. In this case, move the vehicle to a different location and check if there is any improvement.
If a tool for checking radio waves, such as a signal strength meter, is available, move around the area while observing both the LF band (used by the vehicle antenna to form the detection area) and RF band (used by the electrical key transmitter sub-assembly for transmission) to check for locations where there is wave interference.
The transmitting wave of the wireless function and entry function are the same, but the wave logic is different. As a result, it is possible that only the wireless function or only the entry function is affected by wave interference.

(1) Bring the electrical key transmitter sub-assembly approximately 0.3 m (0.984 ft.) from the front door outside handle assembly (for driver door) and perform a driver door entry lock and unlock operation check.

HINT:

Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the door handle.

*a	Approximately 0.3 m (0.984 ft.)

(2) Bring the electrical key transmitter sub-assembly approximately 0.3 m (0.984 ft.) from the front door outside handle assembly (for front passenger door) and perform a front passenger door entry lock and unlock operation check.

HINT:

Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the door handle.

*a	Approximately 0.3 m (0.984 ft.)

(3) Bring the electrical key transmitter sub-assembly approximately 0.3 m (0.984 ft.) from the electrical key antenna (outside luggage compartment) and perform an entry luggage compartment door open function check.

HINT:

Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the rear bumper.

*a	Approximately 0.3 m (0.984 ft.)

Result	Proceed to
All operation checks fail	A
All operation checks are normal	B
Some operation checks are normal	C

AFFECTED BY WAVE INTERFERENCE

GO TO OTHER PROBLEM

3.	CHECK KEY DIAGNOSTIC MODE

(a) Check the following antennas in key diagnostic mode.

Body Electrical > Smart Key > Utility

Tester Display
Communication Check(Key Diag Mode)

(b) Select either channel 1 or channel 2 and perform key diagnostic mode inspection for each channel.

(1) Check the electrical key antenna (for driver door):

When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the front door outside handle assembly (for driver door), check that the wireless buzzer sounds.

HINT:

Select either channel 1 or channel 2 and perform the key diagnostic mode inspection for each channel.
If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.

*a	0.7 to 1 m (2.30 to 3.28 ft.)

(2) Check the electrical key antenna (for front passenger door):

HINT:

Select either channel 1 or channel 2 and perform the key diagnostic mode inspection for each channel.
If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.

*a	0.7 to 1 m (2.30 to 3.28 ft.)

(3) Check the electrical key antenna (outside luggage compartment):

When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the electrical key antenna (outside luggage compartment), check that the wireless buzzer sounds.

HINT:

Select either channel 1 or channel 2 and perform the key diagnostic mode inspection for each channel.
If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.

OK:

Wireless buzzer sounds.

*a	0.7 to 1 m (2.30 to 3.28 ft.)

Result	Proceed to
All diagnostic mode inspections fail	A
Some diagnostic mode inspections fail (door)	B
Some diagnostic mode inspections fail (outside luggage compartment)	C
All diagnostic mode inspections are normal	D

GO TO OTHER PROBLEM

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

4.	CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

(a) Check if there is another electrical key transmitter sub-assembly available that is already registered to the vehicle.

Result	Proceed to
Another registered electrical key transmitter sub-assembly is not available	A
Another registered electrical key transmitter sub-assembly is available	B

GO TO STEP 6

5.	ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY REGISTRATION (NEW ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY)

(a) Register a new electrical key transmitter sub-assembly.

Click here

6.	CHECK ENTRY LOCK OPERATION

(a) Using another registered electrical key transmitter sub-assembly, check that the entry function operates normally.

Click here

Result	Proceed to
Entry function operates normally	A
Entry function does not operate normally	B

END (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS DEFECTIVE)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

Open in Driver Side Electrical Antenna Circuit (B27A1)

DESCRIPTION

The certification ECU (smart key ECU assembly) generates a request signal and transmits the signal to the front door outside handle assembly (for driver door) (electrical key antenna) at intervals of 0.25 seconds. For the front door outside handle assembly (for driver door) (electrical key antenna) to detect when the electrical key transmitter sub-assembly is brought close to the vehicle, a signal requesting a response from the electrical key transmitter sub-assembly is transmitted within approximately 1 m (3.28 ft.) of the driver door at intervals of 0.25 seconds. DTC B27A1 is stored by the certification ECU (smart key ECU assembly) when an open is detected between the certification ECU (smart key ECU assembly) and front door outside handle assembly (for driver door) (electrical key antenna) (between terminals CLG1 and ANTE1, or terminals CG1B and CLGB).

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Note
B27A1	Open in Driver Side Electrical Antenna Circuit	An open is detected in the circuit between the certification ECU (smart key ECU assembly) and front door outside handle assembly (for driver door) (CLG1 - ANTE1, CG1B - CLGB) (This is detected by the malfunction detection circuit in the certification ECU (smart key ECU assembly)) (1 trip detection logic*).	Certification ECU (smart key ECU assembly) Front door outside handle assembly (for driver door) Harness or connector	Any time

*: Only output while a malfunction is present.

Vehicle Condition and Fail-safe Operation when Malfunction Detected

Vehicle Condition when Malfunction Detected	Fail-safe Operation when Malfunction Detected
Entry lock/unlock operation cannot be performed for driver door	-

Related Data List and Active Test

DTC No.	Data List and Active Test
B27A1	Key diagnostic mode can be used to perform troubleshooting

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

The smart key system (for Entry Function, Gasoline Model) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Entry Function, Gasoline Model) after confirming that the communication systems are functioning properly.
Click here
When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
Before replacing the certification ECU (smart key ECU assembly), refer to Precaution.
Click here
After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

PROCEDURE

1.	CHECK CONNECTOR CONNECTION

(a) Check that the connectors are properly connected to the certification ECU (smart key ECU assembly) and front door outside handle assembly (for driver door).

OK:

Connectors are properly connected.

CONNECT CONNECTORS PROPERLY

2.	CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR))

(a) Disconnect the K10 certification ECU (smart key ECU assembly) connector.

(b) Disconnect the I23 front door outside handle assembly (for driver door) connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
K10-17 (CLG1) - I23-6 (ANTE1)	Always	Below 1 Ω
K10-16 (CG1B) - I23-4 (CLGB)	Always	Below 1 Ω

(d) Reconnect the K10 certification ECU (smart key ECU assembly) connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR))

Component with harness connected

(Certification ECU (Smart Key ECU Assembly))

Waveform 1

Waveform 2

Waveform 3

Waveform 4

(a) Using an oscilloscope, check the waveform.

OK:

Tester Connection	Condition	Tool Setting	Specified Condition
K10-17 (CLG1) - G40-18 (E)	Procedure: Engine switch off All doors closed Electrical key transmitter sub-assembly not inside vehicle All doors locked through wireless operation (electrical key transmitter sub-assembly brought inside detection area*)	5 V/DIV., 500 ms/DIV.	Pulse generation (See waveform 1)
K10-17 (CLG1) - G40-18 (E)	Procedure: Engine switch off All doors closed Electrical key transmitter sub-assembly not inside vehicle All doors locked through wireless operation (electrical key transmitter sub-assembly brought outside detection area*)	5 V/DIV., 100 ms/DIV.	Pulse generation (See waveform 2)
K10-16 (CG1B) - G40-18 (E)	Procedure: Engine switch off All doors closed Electrical key transmitter sub-assembly not inside vehicle All doors locked through wireless operation (electrical key transmitter sub-assembly brought inside detection area*)	5 V/DIV., 500 ms/DIV.	Pulse generation (See waveform 3)
K10-16 (CG1B) - G40-18 (E)	Procedure: Engine switch off All doors closed Electrical key transmitter sub-assembly not inside vehicle All doors locked through wireless operation (electrical key transmitter sub-assembly brought outside detection area*)	5 V/DIV., 100 ms/DIV.	Pulse generation (See waveform 4)

*: For details about the entry function detection area, refer to Operation Check.
Click here

REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

Open in Front Passenger Side Electrical Antenna Circuit (B27A2)

DESCRIPTION

The certification ECU (smart key ECU assembly) generates a request signal and transmits the signal to the front door outside handle assembly (for front passenger door) (electrical key antenna) at intervals of 0.25 seconds. For the front door outside handle assembly (for front passenger door) (electrical key antenna) to detect when the electrical key transmitter sub-assembly is brought close to the vehicle, a signal requesting a response from the electrical key transmitter sub-assembly is transmitted within approximately 1 m (3.28 ft.) of the front passenger door at intervals of 0.25 seconds. DTC B27A2 is stored by the certification ECU (smart key ECU assembly) when an open is detected between the certification ECU (smart key ECU assembly) and front door outside handle assembly (for front passenger door) (electrical key antenna) (between terminals CLG2 and ANTE2, or terminals CG2B and CLGB).

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Note
B27A2	Open in Front Passenger Side Electrical Antenna Circuit	An open is detected in the circuit between the certification ECU (smart key ECU assembly) and front door outside handle assembly (for front passenger door) (CLG2 - ANTE2, CG2B - CLGB) (This is detected by the malfunction detection circuit in the certification ECU (smart key ECU assembly)) (1 trip detection logic*).	Certification ECU (smart key ECU assembly) Front door outside handle assembly (for front passenger door) Harness or connector	Any time

*: Only output while a malfunction is present.

Vehicle Condition and Fail-safe Operation when Malfunction Detected

Vehicle Condition when Malfunction Detected	Fail-safe Operation when Malfunction Detected
Entry lock/unlock operation cannot be performed for front passenger door	-

Related Data List and Active Test

DTC No.	Data List and Active Test
B27A2	Key diagnostic mode can be used to perform troubleshooting

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

The smart key system (for Entry Function, Gasoline Model) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Entry Function, Gasoline Model) after confirming that the communication systems are functioning properly.
Click here
When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
Before replacing the certification ECU (smart key ECU assembly), refer to Precaution.
Click here
After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

PROCEDURE

1.	CHECK CONNECTOR CONNECTION

(a) Check that the connectors are properly connected to the certification ECU (smart key ECU assembly) and front door outside handle assembly (for front passenger door).

OK:

Connectors are properly connected.

CONNECT CONNECTORS PROPERLY

2.	CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR FRONT PASSENGER DOOR))

(a) Disconnect the K10 certification ECU (smart key ECU assembly) connector.

(b) Disconnect the I7 front door outside handle assembly (for front passenger door) connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
K10-15 (CLG2) - I7-6 (ANTE2)	Always	Below 1 Ω
K10-14 (CG2B) - I7-4 (CLGB)	Always	Below 1 Ω

(d) Reconnect the K10 certification ECU (smart key ECU assembly) connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR FRONT PASSENGER DOOR))

Component with harness connected

(Certification ECU (Smart Key ECU Assembly))

Waveform 1

Waveform 2

Waveform 3

Waveform 4

(a) Using an oscilloscope, check the waveform.

OK:

Tester Connection	Condition	Tool Setting	Specified Condition
K10-15 (CLG2) - G40-18 (E)	Procedure: Engine switch off All doors closed Electrical key transmitter sub-assembly not inside vehicle All doors locked through wireless operation (electrical key transmitter sub-assembly brought inside detection area*)	5 V/DIV., 500 ms/DIV.	Pulse generation (See waveform 1)
K10-15 (CLG2) - G40-18 (E)	Procedure: Engine switch off All doors closed Electrical key transmitter sub-assembly not inside vehicle All doors locked through wireless operation (electrical key transmitter sub-assembly brought outside detection area*)	5 V/DIV., 100 ms/DIV.	Pulse generation (See waveform 2)
K10-14 (CG2B) - G40-18 (E)	Procedure: Engine switch off All doors closed Electrical key transmitter sub-assembly not inside vehicle All doors locked through wireless operation (electrical key transmitter sub-assembly brought inside detection area*)	5 V/DIV., 500 ms/DIV.	Pulse generation (See waveform 3)
K10-14 (CG2B) - G40-18 (E)	Procedure: Engine switch off All doors closed Electrical key transmitter sub-assembly not inside vehicle All doors locked through wireless operation (electrical key transmitter sub-assembly brought outside detection area*)	5 V/DIV., 100 ms/DIV.	Pulse generation (See waveform 4)

*: For details about the entry function detection area, refer to Operation Check.
Click here

REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR FRONT PASSENGER DOOR)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

Open in Inside Luggage Compartment Electrical Key Oscillator Circuit (B27A7)

DESCRIPTION

The certification ECU (smart key ECU assembly) generates a request signal and transmits the signal to the No. 1 indoor electrical key antenna assembly (inside luggage compartment). For the No. 1 indoor electrical key antenna assembly (inside luggage compartment) to detect when the electrical key transmitter sub-assembly is in the cabin, the signal from the certification ECU (smart key ECU assembly) requesting a response from the electrical key transmitter sub-assembly is transmitted inside the vehicle. DTC B27A7 is stored by the certification ECU (smart key ECU assembly) when an open is detected between the certification ECU (smart key ECU assembly) and No. 1 indoor electrical key antenna assembly (inside luggage compartment) (between terminals CLG7 and ANTE7, or terminals CG7B and CLGB).

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Note
B27A7	Open in Inside Luggage Compartment Electrical Key Oscillator Circuit	An open is detected in the circuit between the certification ECU (smart key ECU assembly) and No. 1 indoor electrical key antenna assembly (inside luggage compartment) (CLG7 - ANTE7, CG7B - CLGB) (1 trip detection logic*).	Certification ECU (smart key ECU assembly) No. 1 indoor electrical key antenna assembly (inside luggage compartment) Harness or connector	Any time

*: Only output while a malfunction is present.

Vehicle Condition and Fail-safe Operation when Malfunction Detected

Vehicle Condition when Malfunction Detected

Fail-safe Operation when Malfunction Detected

When electrical key transmitter sub-assembly is in luggage compartment:

Electrical key transmitter sub-assembly locked inside vehicle

Related Data List and Active Test

DTC No.	Data List and Active Test
B27A7	Key diagnostic mode can be used to perform troubleshooting

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

The smart key system (for Entry Function, Gasoline Model) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Entry Function, Gasoline Model) after confirming that the communication systems are functioning properly.
Click here
When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
Before replacing the certification ECU (smart key ECU assembly), refer to Precaution.
Click here
After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

PROCEDURE

1.	CHECK CONNECTOR CONNECTION

(a) Check that the connectors are properly connected to the certification ECU (smart key ECU assembly) and No. 1 indoor electrical key antenna assembly (inside luggage compartment).

OK:

Connectors are properly connected.

CONNECT CONNECTORS PROPERLY

2.	CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE COMPARTMENT))

(a) Disconnect the K10 certification ECU (smart key ECU assembly) connector.

(b) Disconnect the K13 No. 1 indoor electrical key antenna assembly (inside luggage compartment) connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
K10-11 (CLG7) - K13-1 (ANTE7)	Always	Below 1 Ω
K10-10 (CG7B) - K13-3 (CLGB)	Always	Below 1 Ω

(d) Reconnect the K10 certification ECU (smart key ECU assembly) connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE COMPARTMENT))

Component with harness connected

(Certification ECU (Smart Key ECU Assembly))

Waveform 1

Driver door lock sensor not touched

Driver door lock sensor touched

(a) Using an oscilloscope, check the waveform.

OK:

Tester Connection

Condition

Tool Setting

Specified Condition

K10-11 (CLG7) - G40-18 (E)

Procedure:

Door is closed
Engine switch off
Electrical key transmitter sub-assembly not inside vehicle
Driver door lock sensor touched

2 V/DIV., 500 ms/DIV.

Pulse generation

(See waveform 1)

K10-10 (CG7B) - G40-18 (E)

Procedure:

Door is closed
Engine switch off
Electrical key transmitter sub-assembly not inside vehicle
Driver door lock sensor touched

2 V/DIV., 500 ms/DIV.

Pulse generation

(See waveform 1)

REPLACE NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE COMPARTMENT)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

Open in Outside Luggage Compartment Electrical Key Antenna Circuit (B27A8)

DESCRIPTION

The certification ECU (smart key ECU assembly) generates a request signal and transmits the signal to the electrical key antenna (outside luggage compartment). For the electrical key antenna (outside luggage compartment) to detect when the electrical key transmitter sub-assembly is brought close to the vehicle, the received request signal is transmitted within approximately 1 m (3.28 ft.) of the Luggage Compartment door. DTC B27A8 is stored by the certification ECU (smart key ECU assembly) when an open is detected between the certification ECU (smart key ECU assembly) and electrical key antenna (outside luggage compartment) (between terminals CLG8 and ANTE8, or terminals CG8B and CLGB).

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Note
B27A8	Open in Outside Luggage Compartment Electrical Key Antenna Circuit	An open is detected in the circuit between the certification ECU (smart key ECU assembly) and electrical key antenna (outside luggage compartment) (CLG8 - ANTE8, CG8B - CLGB) (1 trip detection logic*).	Certification ECU (smart key ECU assembly) Electrical key antenna (outside luggage compartment) Harness or connector	Any time

*: Only output while a malfunction is present and the engine switch is on (IG).

Vehicle Condition and Fail-safe Operation when Malfunction Detected

Vehicle Condition when Malfunction Detected	Fail-safe Operation when Malfunction Detected
Entry lock/unlock operation cannot be performed for luggage compartment door	-

Related Data List and Active Test

DTC No.	Data List and Active Test
B27A8	Key diagnostic mode can be used to perform troubleshooting

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

The smart key system (for Entry Function, Gasoline Model) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Entry Function, Gasoline Model) after confirming that the communication systems are functioning properly.
Click here
When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
Before replacing the certification ECU (smart key ECU assembly), refer to Precaution.
Click here
After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

PROCEDURE

1.	CHECK CONNECTOR CONNECTION

(a) Check that the connectors are properly connected to the certification ECU (smart key ECU assembly) and electrical key antenna (outside luggage compartment).

OK:

Connectors are properly connected.

CONNECT CONNECTORS PROPERLY

2.	CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE COMPARTMENT))

(a) Disconnect the K10 certification ECU (smart key ECU assembly) connector.

(b) Disconnect the P2 electrical key antenna (outside luggage compartment) connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
K10-13 (CLG8) - P2-2 (ANTE8)	Always	Below 1 Ω
K10-12 (CG8B) - P2-1 (CLGB)	Always	Below 1 Ω

(d) Reconnect the K10 certification ECU (smart key ECU assembly) connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE COMPARTMENT))

Component with harness connected

(Certification ECU (Smart Key ECU Assembly))

Waveform 1

(a) Using an oscilloscope, check the waveform.

OK:

Tester Connection

Condition

Tool Setting

Specified Condition

K10-13 (CLG8) - G40-18 (E)

Procedure:

Engine switch off
Electrical key transmitter sub-assembly brought outside vehicle
All doors closed
Luggage electrical key switch off → on

2 V/DIV., 500 ms/DIV.

Pulse generation

(See waveform 1)

K10-12 (CG8B) - G40-18 (E)

Procedure:

Engine switch off
Electrical key transmitter sub-assembly brought outside vehicle
All doors closed
Luggage electrical key switch off → on

2 V/DIV., 500 ms/DIV.

Pulse generation

(See waveform 1)

REPLACE ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE COMPARTMENT)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

Customer Problem Analysis Check

CUSTOMER PROBLEM ANALYSIS CHECK

HINT:

Be sure to ask the customer in detail about the following points concerning the vehicle operating conditions, environment and problem, and then check for DTCs.

If the entry unlock function does not operate.
If there is no power even when the engine switch is pressed (does not turn on (ACC)).
If the entry lock function does not operate.
If the entry lock/unlock function does not operate for all doors.
If both the entry lock and unlock functions do not operate.
If the wireless lock and unlock functions do not operate.
If the engine does not start with the push-button start function.
If an engine start was attempted by holding the electrical key transmitter sub-assembly near the engine switch and then pressing the engine switch.
If the interior warning buzzers do not sound.
If the outside warning buzzers do not sound.
If the steering does not unlock.

If it is suspected that wave interference is likely, be sure to ask the customer in detail about the following points concerning the vehicle operating conditions, environment and problem.

Specific locations where the system does not operate (such as near TV towers, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc.).
Specific times when the system does not operate
If the symptoms occurred immediately after purchase or only recently.
If the system does not operate only when near specific vehicles (there may be wave interference from the wireless systems of other vehicles).
If the system operates intermittently.
If the electrical key transmitter sub-assembly is bundled together with other items.
If the electrical key transmitter sub-assembly is carried together with other electronic devices, such as cell phones, personal computers, portable music players, other electrical key transmitter sub-assemblies, etc. (keep the electrical key transmitter sub-assembly at least 0.1 m (0.328 ft.) away from such items).
Where the electrical key transmitter sub-assembly is being kept when not in use: If the electrical key transmitter sub-assembly is being placed within 1 m (3.28 ft.) of items such as TVs, DVD recorders, induction cookers, rice cookers, dishwashers, modems, cell phones, personal computers, microwave ovens, desk or floor lamps, cordless telephones, etc.
If there are electronic devices that transmit radio waves placed in the vehicle.
When the transmitter battery was last replaced. The transmitter battery can be checked roughly using the "Key Low Battery" item in the Data List.
Click here
If the customer installed any optional components (theft deterrent devices, wireless fog lights, etc.) to the vehicle.

Customize Parameters

CUSTOMIZE PARAMETERS

CUSTOMIZE SMART KEY SYSTEM (for Entry Function, Gasoline Model)

NOTICE:

When the customer requests a change in a function, first make sure that the function can be customized.
Record the current settings before customizing.

HINT:

The following items can be customized.

(a) Customizing with the Techstream

(1) Connect the Techstream to the DLC3.

(2) Turn the engine switch on (IG).

(3) Turn the Techstream on.

(4) Enter the following menus: Customize Setting / Smart Key / Access or Warning.

(5) Select the setting by referring to the table below.

Smart Key / Access

Tester Display	Description	Default	Setting	ECU
Park Wait Time	Function that sets the period of time (lock confirmation time) that the door is prevented from being unlocked by operating the front door outside handle assembly or rear door outside handle assembly after an entry lock operation is performed.	2.5s	00:0.5s,01:1.5s,10:2.5s,11:5s	Certification ECU (Smart key ECU assembly)
Ignition Available Area	Function that sets the area that the key must be in before the engine switch can be operated.	All	00:Front,01:All	Certification ECU (Smart key ECU assembly)
Trunk Open Mode	Function that opens the luggage compartment door when the user is carrying the electrical key transmitter sub-assembly and presses the luggage electrical key switch.	ON	0:OFF,1:ON	Certification ECU (Smart key ECU assembly)
Door Unlock Mode2	Function that sets which doors are unlocked by the entry unlock function.	All	0:All,1:Driver	Certification ECU (Smart key ECU assembly)
Touch Activation Over Threshold	Function that limits the number of times the entry lock function can be operated consecutively. When set to Not Active entry lock function can be operated an unlimited number of times consecutively.	Active	0:Active,1:Not Active	Certification ECU (Smart key ECU assembly)
Door Unlock Sensor Touch Time Adjust	Function that sets the length of time the unlock sensor on the door outside handle assembly (for driver door) must be touched to unlock all of the doors	Middle	00:OFF,01:Short,10:Middle,11:Long	Certification ECU (Smart key ECU assembly)

Warning

Tester Display	Description	Default	Setting	ECU
Key Low Battery Warning	Enables or disables the sounding of the buzzer when the transmitter battery is low and the engine switch is turned off after being on (IG) for 20 minutes or more.	ON	0:OFF,1:ON	Certification ECU (Smart key ECU assembly)

(b) Customizing with the multi-display

(1) Turn the engine switch on (IG).

(2) Enter the following menus: MENU / Setup / Vehicle / Vehicle Customization / Door Lock Settings.

(3) Select the setting by referring to the table below.

Display	Description	Default	Setting	Relevant ECU
Select Doors to Unlock	Function that sets which doors are unlocked by the entry unlock function.	All Doors	All Doors or Driver's Door	Certification ECU (Smart key ECU assembly)

(1) The following entry unlock modes can be selected when using the entry unlock mode change function.

All door unlock mode: When the unlock sensor of a front door outside handle assembly or rear door outside handle assembly is touched, all of the doors are unlocked simultaneously.
Driver door unlock mode: When the unlock sensor of the front door outside handle assembly (for driver door) is touched, only the driver door is unlocked. If any other door door outside handle assembly is touched, all of the doors are unlocked simultaneously.

(2) When customizing through manual operation:

Turn the engine switch off.
Check that the LED of the electrical key transmitter sub-assembly is not illuminated, and then press and hold the lock and unlock switches of the electrical key transmitter sub-assembly for 5 seconds or more while the electrical key transmitter sub-assembly is in the exterior detection area.

Check the current setting.

HINT:

The mode changes from all door unlock mode to driver door unlock mode and then back to all door unlock mode.

The answer-back (wireless buzzer, buzzer in the combination meter assembly) operation for each mode is indicated in the table below.

Currently Selected Mode	Answer-back (Wireless Buzzer)	Answer-back (Buzzer in Combination Meter Assembly)
All door unlock mode	Buzzer sounds twice (short beeps)	Buzzer sounds once
Driver door unlock mode	Buzzer sounds 3 times (short beeps)	Buzzer sounds once

Release the lock and unlock switches of the electrical key transmitter sub-assembly.
Check that the LED of the electrical key transmitter sub-assembly is not illuminated, and then press and hold the lock and unlock switches of the electrical key transmitter sub-assembly for 5 seconds or more to change the mode.
HINT:

Repeat the procedure as necessary to select the desired mode.
Unlock the doors using the wireless function, and then open any door.

(d) Entry cancel function (manual operation)

HINT:

While the smart key system is canceled, it is possible to lock and unlock the doors with the wireless function, and the engine can be started by holding the electrical key transmitter sub-assembly near the engine switch.

(1) The following functions are disabled when the smart key system is canceled.

Entry unlock/lock functions
Push-button start function
Key lock-in prevention function
Entry warning functions

(2) When canceling the smart key system through manual operation:

Make sure the following conditions are met:
- The engine switch is off.
- The driver door is closed.
- The driver door is unlocked.

(3) Press the unlock switch of the electrical key transmitter sub-assembly.

(4) Open the driver door within 5 seconds of completing the step above (driver door: closed → opened).

(5) With the driver door open, press the unlock switch of the electrical key transmitter sub-assembly 2 times within 5 seconds of completing the step above.

NOTICE:

If the driver door is closed before or while pressing the unlock switch, the entry cancel setting mode will end.

(6) Perform the following procedure within 30 seconds of completing the step above.

Close and open the driver door twice (driver door: open → closed → opened → closed → opened).
With the driver door open, press the unlock switch of the electrical key transmitter sub-assembly 2 times.
NOTICE:

If the driver door is closed before or while pressing the unlock switch, the entry cancel setting mode will end.
Close and open the driver door (driver door: open → closed → opened).

(7) Close the driver door within 5 seconds (driver door: open → closed).

(8) Check that the wireless buzzer sounds twice (short beeps) to confirm that the smart key system has been canceled.

(9) Perform the following procedure to restore the smart key system to the active state from the canceled state.

Perform the procedure to cancel the smart key system again.
Check that the wireless buzzer sounds once (short beep) to confirm that the smart key system has been restored to the active state.
HINT:
- The system changes between the canceled state and the active state each time the procedure to cancel the system through manual operation is performed.
- The buzzer sounds twice when the system changes from the active state to the canceled state, and sounds once when the system changes from the canceled state to the active state.

Data List / Active Test

DATA LIST / ACTIVE TEST

DATA LIST

NOTICE:

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.
When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.

HINT:

Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(d) Enter the following menus: Body Electrical / Smart Key, Main Body, Power Source Control or Combination Meter / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Smart Key > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
D-Door Touch Sensor	Driver door touch sensor (unlock sensor)*	OFF or ON	OFF: Driver door touch sensor (unlock sensor) not touched ON: Driver door touch sensor (unlock sensor) touched	Displays whether the unlock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily). Use this Data List item to help determine if there is an unlock sensor malfunction when the entry unlock function does not operate.
P-Door Touch Sensor	Front passenger door touch sensor (unlock sensor)*	OFF or ON	OFF: Front passenger door touch sensor (unlock sensor) not touched ON: Front passenger door touch sensor (unlock sensor) touched	Displays whether the unlock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily). Use this Data List item to help determine if there is an unlock sensor malfunction when the entry unlock function does not operate.
D-Door Trigger Switch	Driver door touch sensor (lock sensor)*	OFF or ON	OFF: Driver door touch sensor (lock sensor) not touched ON: Driver door touch sensor (lock sensor) touched	Displays whether the lock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily). Use this Data List item to help determine if there is a lock sensor malfunction when the entry lock function does not operate.
P-Door Trigger Switch	Front passenger door touch sensor (lock sensor)*	OFF or ON	OFF: Front passenger door touch sensor (lock sensor) not touched ON: Front passenger door touch sensor (lock sensor) touched	Displays whether the lock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily). Use this Data List item to help determine if there is a lock sensor malfunction when the entry lock function does not operate.
Tr/B-Door Unlock SW	Luggage electrical key switch	OFF or ON	OFF: Luggage electrical key switch not pushed ON: Luggage electrical key switch pushed	Displays whether the luggage electrical key switch is on or off. Use this Data List item to help determine if there is a switch malfunction when the entry luggage compartment open function does not operate.
Unmatched Vehicle-ID	Key No. (incorrect or correct)	No or Yes	No: Communication normal Yes: Communication malfunction	The vehicle ID registered in the vehicle and the vehicle ID registered in the electrical key transmitter sub-assembly are different (if a key from another vehicle is brought into the vehicle exterior detection area while the doors are locked, "Yes" is displayed for "Unmatched Vehicle-ID" in the Data List). Other potential causes: An electrical key transmitter sub-assembly from a different vehicle is being used. A communication error due to wave interference. The electrical key transmitter sub-assembly or certification ECU (smart key ECU assembly) is malfunctioning.
No Response	Communication response	No or Yes	No: Communication normal Yes: Communication malfunction	The vehicle IDs registered in the vehicle and electrical key transmitter sub-assembly match, but there is no response from the electrical key transmitter sub-assembly. (If the electrical key transmitter sub-assembly is not in the detection area or the transmitter battery is depleted resulting in a matching code not being detected when a lock switch or the engine switch is pressed, etc., "Yes" is displayed for "No Response" in the Data List. If there is wave interference in the LF band that the vehicle uses for transmission or the RF band that the electrical key transmitter sub-assembly uses for transmission, "Yes" may be displayed for "No Response" in the Data List.) Other potential causes: An electrical key transmitter sub-assembly from a different vehicle is being used. The electrical key transmitter sub-assembly or certification ECU (smart key ECU assembly) is malfunctioning.
Unmatch Code or Form	Code format (incorrect or correct)	No or Yes	No: Communication normal Yes: Communication malfunction	There is an error in the data sent from the electrical key transmitter sub-assembly (if there is wave interference in the RF band that the electrical key transmitter sub-assembly uses for transmission, "Yes" may be displayed for "Unmatch Code or Form", "No Response", "ID Code Difference(Resp)" and "C Code Difference" in the Data List). Other potential causes: An electrical key transmitter sub-assembly from a different manufacturer is being used. The electrical key transmitter sub-assembly or certification ECU (smart key ECU assembly) is malfunctioning.
Key Low Battery	Transmitter battery depleted	No or Yes	No: Transmitter battery not depleted Yes: Transmitter battery depleted	The electrical key transmitter sub-assembly sends voltage information to the certification ECU (smart key ECU assembly) when it is transmitting. "Yes" is displayed for the Data List item "Key Low Battery" when this voltage information indicates 2.2 V or less. This Data List item should be checked when the electrical key transmitter sub-assembly is at room temperature (example: at -20°C (-4°F), "Yes" may be displayed even if the transmitter battery is new).
Power Save Cnt 10 Min.	Number of times power saving control is activated due to electrical key transmitter sub-assembly being in detection area for 10 minutes or more	0 to 255	Within range of 0 to 255	If the electrical key transmitter sub-assembly is in a vehicle exterior detection area, communication is frequently performed between the vehicle and electrical key transmitter sub-assembly, resulting in an increase in transmitter battery power consumption. To prevent the transmitter battery from becoming fully depleted, if the electrical key transmitter sub-assembly is left in the detection area for 10 minutes or more, the smart key system automatically deactivates the exterior detection area the electrical key transmitter sub-assembly is in. If the doors are locked/unlocked with a wireless operation or by the mechanical key, the system resumes operation.
Power Save Cnt 5 Days	Number of times power saving control 1 (vehicle exterior periodic signal transmission stop) is activated due to engine not being started for 5 days or more	0 to 255	Within range of 0 to 255	-
Power Save Cnt 14 Days	Number of times power saving control 2 (lock/unlock sensor of front door outside handle assembly of front passenger door disabled) is activated due to engine not being started for 14 days or more	0 to 255	Within range of 0 to 255	-
# Codes	Number of trouble codes	0 to 255	Number of stored DTCs displayed	-
ID Code Difference(Resp)	ID code (incorrect or correct)	No or Yes	No: Communication normal Yes: Communication malfunction	The ID code registered in the vehicle and the ID code registered in the electrical key transmitter sub-assembly are different (if there is wave interference in the RF band that the electrical key transmitter sub-assembly uses for transmission, "Yes" may be displayed for "Unmatch Code or Form", "No Response", "ID Code Difference(Resp)" and "C Code Difference" in the Data List). Other potential causes: An electrical key transmitter sub-assembly from a different vehicle is being used. The electrical key transmitter sub-assembly or certification ECU (smart key ECU assembly) is malfunctioning.
C Code Difference	Challenge code (incorrect or correct)	No or Yes	No: Communication normal Yes: Communication malfunction	The electrical key transmitter sub-assembly sends a response code in response to the challenge code from the vehicle, but the response code is incorrect (if there is wave interference in the RF band that the electrical key transmitter sub-assembly uses for transmission, "Yes" may be displayed for "Unmatch Code or Form", "No Response", "ID Code Difference(Resp)" and "C Code Difference" in the Data List). Other potential causes: The electrical key transmitter sub-assembly or certification ECU (smart key ECU assembly) is malfunctioning.
ID Code Difference	Wireless ID code (incorrect or correct)	No or Yes	No: Communication normal Yes: Communication malfunction	The ID code registered in the vehicle and the ID code registered in the electrical key transmitter sub-assembly are different. (If a wireless ID other than those for any of the registered electrical key transmitter sub-assemblies is detected, "Yes" is displayed for "ID Code Difference" in the Data List. If a wireless signal from the electrical key transmitter sub-assembly of another vehicle is detected, "Yes" is displayed for "ID Code Difference(Resp)" in the Data List.) Other potential causes: An electrical key transmitter sub-assembly from a different vehicle is being used. A communication error due to external noise (RF). The electrical key transmitter sub-assembly or certification ECU (smart key ECU assembly) is malfunctioning.
Different Rolling Code	Rolling code (incorrect or correct)	No or Yes	No: Communication normal Yes: Communication malfunction	The rolling code registered in the vehicle and the rolling code registered in the electrical key transmitter sub-assembly are different Other potential causes: An electrical key transmitter sub-assembly switch is pressed 100 times or more in a location where the radio waves cannot reach the vehicle. A communication error due to external noise (RF). The electrical key transmitter sub-assembly or certification ECU (smart key ECU assembly) is malfunctioning.
B Code Difference	B code mismatch	No or Yes	No: Communication normal Yes: Communication malfunction	-
B Code	B code registration status	No Regd or Regd	No Regd: B code not registered correctly Regd: B code registered correctly	-
B Code Registration Status	B code registration status	OK or NG	OK: B code is registered properly NG: B code is not registered properly	-
Door Unlock Mode2	Door unlock mode	All or Driver	Customize setting displayed	-
Ignition Available Area	Ignition available area	Front or All	Customize setting displayed	-
Parking Wait Time	Parking wait time	0.5s, 1.5s, 2.5s or 5s	Customize setting displayed	-
Trunk Open Mode	Entry luggage compartment open mode	OFF or ON	Customize setting displayed	-
Touch Activation Over Threshold	Consecutive entry lock operation	Active or Not Active	Customize setting displayed	-
Wireless Signal Encryption Support	Wireless signal encryption support	No or Yes	No: Wireless signal encryption not supported Yes: Wireless signal encryption supported	-
Key Low Battery Warning	Low transmitter battery warning	OFF or ON	Customize setting displayed	-
Key Left in Vehicle Buz	Key left in vehicle buzzer	OFF or ON	Customize setting displayed	-
Engine Start Indicator	Key indicator display	OFF or ON	Customize setting displayed	-
Door Unlock Sensor Touch Time Adjust	Length of time the unlock sensor on the door outside handle assembly (for driver door) must be touched to unlock all of the doors	OFF, Short, Middle or Long	Customize setting displayed	-
Number of Registered Key Codes	Number of registered electrical key transmitter sub-assemblies	0 to 8	Number of registered electrical key transmitter sub-assemblies	Up to 7 electrical key transmitter sub-assemblies can be registered.
Short in Fr P Side Door Oscillators Circuit (Hist)	Short in front passenger door electrical key antenna circuit (history)	OK or NG(Hist)	OK: Front passenger door electrical key antenna circuit was normal NG(Hist): Front passenger door electrical key antenna circuit was abnormal	-
Short in D Side Door Oscillators Circuit (Hist)	Short in driver door electrical key antenna circuit (history)	OK or NG(Hist)	OK: Driver door electrical key antenna circuit was normal NG(Hist): Driver door electrical key antenna circuit was abnormal	-
Short in Front P Side Door Oscillators Circuit	Short in front passenger door electrical key antenna circuit	OK or NG	OK: Front passenger door electrical key antenna circuit is normal NG: Front passenger door electrical key antenna circuit is abnormal	-
Short in Driver Side Door Oscillators Circuit	Short in driver door electrical key antenna circuit	OK or NG	OK: Driver door electrical key antenna circuit is normal NG: Driver door electrical key antenna circuit is abnormal	-

*: Data from an actual vehicle provided for reference.

HINT:

*1: With engine switch off, all doors closed, electrical key transmitter sub-assembly not inside vehicle and all doors locked, the unlock sensor of the front door outside handle assembly is touched.
*2: Approximately 150 ms
*3: With engine switch off, all doors closed, electrical key transmitter sub-assembly not inside vehicle and all doors unlocked, the lock sensor of the front door outside handle assembly is touched.

Body Electrical > Main Body > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
ACC SW	Engine switch status	OFF or ON	OFF: Engine switch off ON: Engine switch on (ACC)	"ON" is also displayed when the engine switch is on (IG).
IG SW	Engine switch status	OFF or ON	OFF: Engine switch off ON: Engine switch on (IG)	"OFF" is also displayed when the engine switch is on (ACC).
RR Door Courtesy SW	Rear door RH courtesy light switch	OFF or ON	OFF: Rear door RH closed ON: Rear door RH open	-
RL Door Courtesy SW	Rear door LH courtesy light switch	OFF or ON	OFF: Rear door LH closed ON: Rear door LH open	-
FR Door Lock Pos	Front door RH unlock detection switch signal	UNLOCK or LOCK	UNLOCK: Front door RH unlocked LOCK: Front door RH locked	-
FR Door Courtesy SW	Front door RH courtesy light switch signal	OFF or ON	OFF: Front door RH closed ON: Front door RH open	-
FL Door Lock Pos	Front door LH unlock detection switch signal	UNLOCK or LOCK	UNLOCK: Front door LH unlocked LOCK: Front door LH locked	-
FL Door Courtesy SW	Front door LH courtesy light switch signal	OFF or ON	OFF: Front door LH closed ON: Front door LH open	-
RR-Door Lock Pos SW	Rear door RH unlock detection switch signal	OFF or ON	OFF: Rear door RH locked ON: Rear door RH unlocked	-
RL-Door Lock Pos SW	Rear door LH unlock detection switch signal	OFF or ON	OFF: Rear door LH locked ON: Rear door LH unlocked	-
Luggage Courtesy SW	Luggage compartment door lock courtesy light switch signal	OFF or ON	OFF: Luggage compartment door closed ON: Luggage compartment door open	-
Wireless Buzzer Resp	Wireless buzzer answer-back of entry function	OFF or ON	Customize setting displayed	-

Body Electrical > Power Source Control > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Power Supply Condition

Power supply state

All OFF, ACC ON, IG ON or ST ON

All OFF: Engine switch off

ACC ON: Engine switch on (ACC)

IG ON: Engine switch on (IG)

ST ON: Sending engine start request signal

ACTIVE TEST

HINT:

Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(d) Enter the following menus: Body Electrical / Smart Key or Main Body / Active Test.

(e) Perform Active Test according to the display on the Techstream.

Body Electrical > Smart Key > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Overhead Tuner Power Supply ON	Electrical key and tire pressure monitoring system receiver assembly	OFF/ON	-
Power for P-Seat Sens	Front door outside handle (for front passenger door)	OFF/ON	-
Multi Channel SW	Electrical key and tire pressure monitoring system receiver assembly	CH1/CH2	-

Body Electrical > Main Body > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Door Lock	Door lock motor	OFF/Unlock/Lock	-
D-Door Unlock	Driver door lock motor	OFF/ON	-
Trunk and Back-Door Open	Luggage compartment door lock motor	OFF/ON	-
Wireless Buzzer	Wireless door lock buzzer	OFF/ON	-

Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

Smart Key System (for Entry Function, Gasoline Model)

DTC No.	Detection Item	Link
B27A1	Open in Driver Side Electrical Antenna Circuit
B27A2	Open in Front Passenger Side Electrical Antenna Circuit
B27A7	Open in Inside Luggage Compartment Electrical Key Oscillator Circuit
B27A8	Open in Outside Luggage Compartment Electrical Key Antenna Circuit

Driver Side Door Entry Lock and Unlock Functions do not Operate

DESCRIPTION

If the entry lock and unlock functions do not operate for the driver door only, the request code may not be being transmitted from the driver door or the front door outside handle assembly (for driver door) (touch sensor) may be malfunctioning. If the entry functions for other doors operate properly, communication between the electrical key transmitter sub-assembly and electrical key and tire pressure monitoring system receiver assembly is normal. In this case, there may be a problem with request code transmission (communication between the certification ECU (smart key ECU assembly) and front door outside handle assembly (for driver door) (electrical key antenna)), or there may be wave interference.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

The smart key system (for Entry Function, Gasoline Model) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Entry Function, Gasoline Model) after confirming that the communication systems are functioning properly.
Click here
When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
Check that there are no electrical key transmitter sub-assemblies in the vehicle.
Before replacing the certification ECU (smart key ECU assembly), refer to Precaution.
Click here
After repair, confirm that no DTCs are output.

HINT:

If the driver door entry lock and unlock functions do not operate, the cause of the malfunction may be stored in the certification ECU (smart key ECU assembly).
If the cause of the malfunction is stored in the certification ECU (smart key ECU assembly), the following table is helpful in checking whether the malfunction was caused by wave interference.

Body Electrical > Smart Key > Utility

Tester Display
Operation History

PROCEDURE

1.	CHECK POWER DOOR LOCK CONTROL SYSTEM

(a) When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to the switch operation.

Click here

OK:

Door locks operate normally.

GO TO POWER DOOR LOCK CONTROL SYSTEM

2.	CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Smart Key > Trouble Codes

Result	Proceed to
DTCs are not output	A
DTCs are output	B

GO TO DIAGNOSTIC TROUBLE CODE CHART

3.	CHECK WAVE ENVIRONMENT

(a) Bring the electrical key transmitter sub-assembly approximately 0.3 m (0.984 ft.) from the front door outside handle assembly (for driver door) and perform an entry function check.

Click here

Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the front door outside handle assembly (for driver door).
When the electrical key transmitter sub-assembly is brought near the front door outside handle assembly (for driver door), the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
If the inspection result is that the problem only occurs in certain locations or at certain times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.
There may be wave interference if the vehicle is near broadcasting antennas, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc. In this case, move the vehicle to a different location and check if there is any improvement.
If a tool for checking radio waves, such as a signal strength meter, is available, move around the area while observing both the LF band (used by the vehicle antenna to form the detection area) and RF band (used by the electrical key transmitter sub-assembly for transmission) to check for locations where there is wave interference.
When checking the operation of the entry lock function several times, it can be operated up to 2 times consecutively. To operate the function 3 times or more consecutively, the doors need to be unlocked once. However, this is only for the entry lock function, other door lock operations, such as a wireless door lock operation can be performed consecutively.

*a	Approximately 0.3 m (0.984 ft.)

Result	Proceed to
Entry function does not operate normally	A
Entry function operates normally	B

AFFECTED BY WAVE INTERFERENCE

4.	READ VALUE USING TECHSTREAM (D-DOOR TOUCH SENSOR)

(a) Turn the engine switch off.

(b) Open and close the driver door.

(c) With the electrical key transmitter sub-assembly outside of the vehicle, press the lock switch of the electrical key transmitter sub-assembly to lock all of the doors.

(d) Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly and approximately 0.3 m (0.984 ft.) from the driver door.

(e) Check that the LED of the electrical key transmitter sub-assembly blinks.

(f) Read the Data List according to the display on the Techstream.

(g) Touch the unlock sensor on the backside of the front door outside handle assembly (for driver door).

HINT:

When checking the operation of the unlock sensor again, make sure to perform the procedure from step (a).

Body Electrical > Smart Key > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

D-Door Touch Sensor

Driver door touch sensor (unlock sensor)

OFF or ON

OFF: Driver door touch sensor (unlock sensor) not touched

ON: Driver door touch sensor (unlock sensor) touched

Displays whether the unlock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily).
Use this Data List item to help determine if there is an unlock sensor malfunction when the entry unlock function does not operate.

Body Electrical > Smart Key > Data List

Tester Display
D-Door Touch Sensor

OK:

The Techstream display changes correctly in response to the operation of the front door outside handle assembly (for driver door).

*a	Unlock Sensor (Backside)

GO TO STEP 7

5.	READ VALUE USING TECHSTREAM (D-DOOR TRIGGER SWITCH)

(a) Turn the engine switch off.

(b) Open and close the driver door.

(c) Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly and approximately 0.3 m (0.984 ft.) from the driver door.

(d) Read the Data List according to the display on the Techstream.

(e) Touch the lock sensor of the front door outside handle assembly (for driver door).

HINT:

If the door does not lock even when touching the lock sensor, touch it with your palm.
When checking the operation of the lock sensor again, make sure to perform the procedure from step (a).

Body Electrical > Smart Key > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

D-Door Trigger Switch

Driver door touch sensor (lock sensor)

OFF or ON

OFF: Driver door touch sensor (lock sensor) not touched

ON: Driver door touch sensor (lock sensor) touched

Displays whether the lock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily).
Use this Data List item to help determine if there is a lock sensor malfunction when the entry lock function does not operate.

Body Electrical > Smart Key > Data List

Tester Display
D-Door Trigger Switch

HINT:

When checking the operation of the entry lock function several times, it can be operated up to 2 times consecutively. To operate the function 3 times or more consecutively, the doors need to be unlocked once. However, this is only for the entry lock function, other door lock operations, such as a wireless door lock operation can be performed consecutively.

OK:

The Techstream display changes correctly in response to the operation of the front door outside handle assembly (for driver door).

*a	Lock Sensor

GO TO STEP 7

6.	CHECK KEY DIAGNOSTIC MODE

(a) Check the following antenna in key diagnostic mode.

Body Electrical > Smart Key > Utility

Tester Display
Communication Check(Key Diag Mode)

(b) Select either channel 1 or channel 2 and perform key diagnostic mode inspection for each channel.

(1) Check the electrical key antenna (for driver door):

When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the front door outside handle assembly (for driver door), check that the wireless buzzer sounds.

HINT:

Select either channel 1 or channel 2 and perform the key diagnostic mode inspection for each channel.
If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.

*a	0.7 to 1 m (2.30 to 3.28 ft.)

Result	Proceed to
Wireless buzzer does not sound	A
Wireless buzzer sounds	B

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

7.	CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR))

(a) Disconnect the K10 certification ECU (smart key ECU assembly) connector.

(b) Disconnect the I23 front door outside handle assembly (for driver door) connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
K10-17 (CLG1) - I23-6 (ANTE1)	Always	Below 1 Ω
K10-16 (CG1B) - I23-4 (CLGB)	Always	Below 1 Ω
K10-17 (CLG1) or I23-6 (ANTE1) - Other terminals and body ground	Always	10 kΩ or higher
K10-16 (CG1B) or I23-4 (CLGB) - Other terminals and body ground	Always	10 kΩ or higher

(d) Reconnect the K10 certification ECU (smart key ECU assembly) connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.	CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO DRIVER DOOR ELECTRICAL KEY ANTENNA)

(a) Using an oscilloscope, check the waveform.

OK:

Tester Connection

Condition

Tool Setting

Specified Condition

I23-6 (ANTE1) - I23-4 (CLGB)

Procedure:

Engine switch off
All doors closed
Electrical key transmitter sub-assembly not inside vehicle
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought outside detection area*)

5 V/DIV., 100 ms/DIV.

Pulse generation

(See waveform 1)

*: For details about the entry function detection area, refer to Operation Check.

Click here

Front view of wire harness connector

(to Front Door Outside Handle Assembly (for Driver Door))

Waveform 1

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

9.	CHECK ENTRY LOCK OPERATION

(a) Connect all connectors and check that the function operates normally.

Click here

Result	Proceed to
Entry function does not operate normally	A
Entry function operates normally	B

END (CONNECTOR WAS NOT CONNECTED SECURELY)

10.	REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR)

(a) Replace the front door outside handle assembly (for driver door) with a new one or the front door outside handle assembly (for front passenger door) if it is functioning properly.

Click here

11.	CHECK ENTRY LOCK OPERATION

(a) Check that the function operates normally.

Click here

Result	Proceed to
Entry function operates normally	A
Entry function does not operate normally	B

END (FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR) WAS DEFECTIVE)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

Driver Side Door Entry Lock Function does not Operate

DESCRIPTION

If the entry lock function does not operate for the driver door only, but the entry unlock function operates, the request code is being transmitted properly from the driver door. In this case, there may be a problem related to the lock sensor (connection between the certification ECU (smart key ECU assembly) and front door outside handle assembly (for driver door)).

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

The smart key system (for Entry Function, Gasoline Model) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Entry Function, Gasoline Model) after confirming that the communication systems are functioning properly.
Click here
When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
Check that there are no electrical key transmitter sub-assemblies in the vehicle.
Before replacing the certification ECU (smart key ECU assembly), refer to Precaution.
Click here
After repair, confirm that no DTCs are output.

PROCEDURE

1.	CHECK POWER DOOR LOCK CONTROL SYSTEM

(a) When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to the switch operation.

Click here

OK:

Door locks operate normally.

GO TO POWER DOOR LOCK CONTROL SYSTEM

2.	READ VALUE USING TECHSTREAM (D-DOOR TRIGGER SWITCH)

(a) Turn the engine switch off.

(b) Open and close the driver door.

(c) Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly and approximately 0.3 m (0.984 ft.) from the driver door.

(d) Read the Data List according to the display on the Techstream.

(e) Touch the lock sensor of the front door outside handle assembly (for driver door).

HINT:

If the door does not lock even when touching the lock sensor, touch it with your palm.
When checking the operation of the lock sensor again, make sure to perform the procedure from step (a).

Body Electrical > Smart Key > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

D-Door Trigger Switch

Driver door touch sensor (lock sensor)

OFF or ON

OFF: Driver door touch sensor (lock sensor) not touched

ON: Driver door touch sensor (lock sensor) touched

Displays whether the lock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily).
Use this Data List item to help determine if there is a lock sensor malfunction when the entry lock function does not operate.

Body Electrical > Smart Key > Data List

Tester Display
D-Door Trigger Switch

HINT:

OK:

The Techstream display changes correctly in response to the operation of the front door outside handle assembly (for driver door).

*a	Lock Sensor

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

3.	CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR))

(a) Disconnect the K10 certification ECU (smart key ECU assembly) connector.

(b) Disconnect the I23 front door outside handle assembly (for driver door) connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
K10-17 (CLG1) - I23-6 (ANTE1)	Always	Below 1 Ω
K10-16 (CG1B) - I23-4 (CLGB)	Always	Below 1 Ω
K10-17 (CLG1) or I23-6 (ANTE1) - Other terminals and body ground	Always	10 kΩ or higher
K10-16 (CG1B) or I23-4 (CLGB) - Other terminals and body ground	Always	10 kΩ or higher

(d) Reconnect the I23 front door outside handle assembly (for driver door) connector.

(e) Reconnect the K10 certification ECU (smart key ECU assembly) connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.	CHECK FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR) (INPUT TO CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

Component with harness connected

(Certification ECU (Smart Key ECU Assembly))

Waveform 1

Lock sensor not touched

Lock sensor touched

(a) Using an oscilloscope, check the waveform.

OK:

Tester Connection

Condition

Tool Setting

Specified Condition

K10-17 (CLG1) - G40-18 (E)

Procedure:

Engine switch off
Electrical key transmitter sub-assembly brought outside vehicle
All doors closed
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought outside detection area*)
Driver door lock sensor touched

5 V/DIV., 40 ms/DIV.

Pulse generation

(See waveform 1)

*: For details about the entry function detection area, refer to Operation Check.

Click here

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR)

Driver Side Door Entry Unlock Function does not Operate

DESCRIPTION

If the entry unlock function does not operate for the driver door only, but the entry lock function operates, the request code is being transmitted properly from the driver door. In this case, there may be a problem related to the unlock sensor (connection between the certification ECU (smart key ECU assembly) and front door outside handle assembly (for driver door)).

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

The smart key system (for Entry Function, Gasoline Model) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Entry Function, Gasoline Model) after confirming that the communication systems are functioning properly.
Click here
When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
Check that there are no electrical key transmitter sub-assemblies in the vehicle.
Before replacing the certification ECU (smart key ECU assembly), refer to Precaution.
Click here
After repair, confirm that no DTCs are output.

PROCEDURE

1.	CHECK POWER DOOR LOCK CONTROL SYSTEM

(a) When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to the switch operation.

Click here

OK:

Door locks operate normally.

GO TO POWER DOOR LOCK CONTROL SYSTEM (for Gasoline Model)

2.	READ VALUE USING TECHSTREAM (FL DOOR LOCK POS)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

FL Door Lock Pos

Front door LH unlock detection switch signal

UNLOCK or LOCK

UNLOCK: Front door LH unlocked

LOCK: Front door LH locked

Body Electrical > Main Body > Data List

Tester Display
FL Door Lock Pos

OK:

The Techstream display changes correctly in response to the lock/unlock operation of the driver door.

GO TO LIGHTING SYSTEM (for Gasoline Model (Proceed to Door Unlock Detection Switch Circuit))

3.	READ VALUE USING TECHSTREAM (D-DOOR TOUCH SENSOR)

(a) Turn the engine switch off.

(b) Open and close the driver door.

(c) With the electrical key transmitter sub-assembly outside of the vehicle, press the lock switch of the electrical key transmitter sub-assembly to lock all of the doors.

(d) Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly and approximately 0.3 m (0.984 ft.) from the driver door.

(e) Check that the LED of the electrical key transmitter sub-assembly blinks.

(f) Read the Data List according to the display on the Techstream.

(g) Touch the unlock sensor on the backside of the front door outside handle assembly (for driver door).

HINT:

When checking the operation of the unlock sensor again, make sure to perform the procedure from step (a).

Body Electrical > Smart Key > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

D-Door Touch Sensor

Driver door touch sensor (unlock sensor)

OFF or ON

OFF: Driver door touch sensor (unlock sensor) not touched

ON: Driver door touch sensor (unlock sensor) touched

Displays whether the unlock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily).
Use this Data List item to help determine if there is an unlock sensor malfunction when the entry unlock function does not operate.

Body Electrical > Smart Key > Data List

Tester Display
D-Door Touch Sensor

OK:

The Techstream display changes correctly in response to the operation of the front door outside handle assembly (for driver door).

*a	Unlock Sensor (Backside)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

4.	CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR))

(a) Disconnect the K10 certification ECU (smart key ECU assembly) connector.

(b) Disconnect the I23 front door outside handle assembly (for driver door) connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
K10-17 (CLG1) - I23-6 (ANTE1)	Always	Below 1 Ω
K10-16 (CG1B) - I23-4 (CLGB)	Always	Below 1 Ω
K10-17 (CLG1) or I23-6 (ANTE1) - Other terminals and body ground	Always	10 kΩ or higher
K10-16 (CG1B) or I23-4 (CLGB) - Other terminals and body ground	Always	10 kΩ or higher

(d) Reconnect the I23 front door outside handle assembly (for driver door) connector.

(e) Reconnect the K10 certification ECU (smart key ECU assembly) connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.	CHECK FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR) (INPUT TO CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

Component with harness connected

(Certification ECU (Smart Key ECU Assembly))

Waveform 1

Unlock sensor not touched

Unlock sensor touched

(a) Using an oscilloscope, check the waveform.

OK:

Tester Connection

Condition

Tool Setting

Specified Condition

K10-17 (CLG1) - G40-18 (E)

Procedure:

Engine switch off
Electrical key transmitter sub-assembly brought outside vehicle
All doors locked
Electrical key transmitter sub-assembly not near the vehicle
Driver door unlock sensor touched

5 V/DIV., 50 ms/DIV.

Pulse generation

(See waveform 1)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR)

Dtc Check / Clear

DTC CHECK / CLEAR

CHECK FOR DTC

NOTICE:

When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(d) Enter the following menus: Body Electrical / Smart Key / Trouble Codes.

Body Electrical > Smart Key > Trouble Codes

(e) Read the DTCs.

NOTICE:

CLEAR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(d) Enter the following menus: Body Electrical / Smart Key / Trouble Codes.

Body Electrical > Smart Key > Clear DTCs

(e) Clear the DTCs.

Entry Exterior Alarm and Answer-back Buzzer do not Sound

DESCRIPTION

The smart key system (for Entry Function) uses the wireless door lock buzzer to perform various vehicle exterior warnings. When the conditions of each warning are met, the certification ECU (smart key ECU assembly) sends a buzzer activation request signal to the main body ECU (multiplex network body ECU) via CAN communication and the buzzer sounds.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

The smart key system (for Entry Function, Gasoline Model) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Entry Function, Gasoline Model) after confirming that the communication systems are functioning properly.
Click here
When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
Before replacing the certification ECU (smart key ECU assembly) or main body ECU (multiplex network body ECU), refer to Precaution.
Click here
After repair, confirm that no DTCs are output.

PROCEDURE

1.	CHECK CUSTOMIZE SETTING (WIRELESS BUZZER RESP)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(d) Enter the following menus: Customize Setting / Wireless Door Lock.

Wireless Door Lock

Tester Display	Description	Default	Setting	ECU
Wireless Buzzer Resp	Wireless buzzer response	ON	0:OFF,1:ON	Main body ECU (multiplex network body ECU)

Result	Proceed to
"ON" is displayed	A
"OFF" is displayed	B

PERFORM CUSTOMIZE SETTING

2.	CHECK WIRELESS DOOR LOCK CONTROL SYSTEM

(a) Check that the function operates normally.

Click here

Result	Proceed to
Wireless door lock function operates normally	A
Wireless door lock function does not operate normally	B

GO TO PROBLEM SYMPTOMS TABLE

3.	READ VALUE USING TECHSTREAM (EACH UNLOCK DETECTION SWITCH)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Main Body > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
FR Door Lock Pos	Front door RH unlock detection switch signal	UNLOCK or LOCK	UNLOCK: Front door RH unlocked LOCK: Front door RH locked	-
FL Door Lock Pos	Front door LH unlock detection switch signal	UNLOCK or LOCK	UNLOCK: Front door LH unlocked LOCK: Front door LH locked	-
RR-Door Lock Pos SW	Rear door RH unlock detection switch signal	OFF or ON	OFF: Rear door RH locked ON: Rear door RH unlocked	-
RL-Door Lock Pos SW	Rear door LH unlock detection switch signal	OFF or ON	OFF: Rear door LH locked ON: Rear door LH unlocked	-

Body Electrical > Main Body > Data List

Tester Display
FR Door Lock Pos
FL Door Lock Pos
RR-Door Lock Pos SW
RL-Door Lock Pos SW

OK:

The Techstream display changes correctly in response to the lock/unlock operation.

GO TO LIGHTING SYSTEM (Proceed to Door Unlock Detection Switch Circuit)

4.	PERFORM ACTIVE TEST USING TECHSTREAM (WIRELESS BUZZER)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(d) Enter the following menus: Body Electrical / Main Body / Active Test.

(e) Perform Active Test according to the display on the Techstream.

Body Electrical > Main Body > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Wireless Buzzer	Wireless door lock buzzer	OFF/ON	-

Body Electrical > Main Body > Active Test

Tester Display
Wireless Buzzer

Result	Proceed to
Wireless door lock buzzer does not sound	A
Wireless door lock buzzer sounds	B

GO TO WIRELESS DOOR LOCK CONTROL SYSTEM (NO ANSWER-BACK)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

Entry Interior Alarm does not Sound

DESCRIPTION

The smart key system (for Entry Function) uses the buzzer in the combination meter assembly (meter ECU) to perform various vehicle interior warnings. When the conditions of each warning are met, the certification ECU (smart key ECU assembly) sends a buzzer activation request signal to the combination meter assembly via CAN communication and the buzzer sounds.

CAUTION / NOTICE / HINT

NOTICE:

The smart key system (for Entry Function, Gasoline Model) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Entry Function, Gasoline Model) after confirming that the communication systems are functioning properly.
Click here
When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
Click here
After repair, confirm that no DTCs are output.

PROCEDURE

1.	CHECK ENTRY LOCK OPERATION

(a) Check that the function operates normally.

Click here

Result	Proceed to
Entry function operates normally	A
Entry function does not operate normally	B

GO TO METER / GAUGE SYSTEM

GO TO OTHER PROBLEM

Front Passenger Side Door Entry Lock and Unlock Functions do not Operate

DESCRIPTION

If the entry lock and unlock functions do not operate for the front passenger door only, the request code may not be being transmitted from the front passenger door or the front door outside handle assembly (for front passenger door) (touch sensor) may be malfunctioning. If the entry functions for other doors operate properly, communication between the electrical key transmitter sub-assembly and electrical key and tire pressure monitoring system receiver assembly is normal. In this case, there may be a problem with request code transmission (communication between the certification ECU (smart key ECU assembly) and front door outside handle assembly (for front passenger door) (electrical key antenna)), or there may be wave interference.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

The smart key system (for Entry Function, Gasoline Model) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Entry Function, Gasoline Model) after confirming that the communication systems are functioning properly.
Click here
When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
Check that there are no electrical key transmitter sub-assemblies in the vehicle.
Before replacing the certification ECU (smart key ECU assembly), refer to Precaution.
Click here
After repair, confirm that no DTCs are output.

HINT:

If the front passenger side door entry lock and unlock functions do not operate, the cause of the malfunction may be stored in the certification ECU (smart key ECU assembly).
If the cause of the malfunction is stored in the certification ECU (smart key ECU assembly), the following table is helpful in checking whether the malfunction was caused by wave interference.

Body Electrical > Smart Key > Utility

Tester Display
Operation History

PROCEDURE

1.	CHECK POWER DOOR LOCK CONTROL SYSTEM

(a) When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to the switch operation.

Click here

OK:

Door locks operate normally.

GO TO POWER DOOR LOCK CONTROL SYSTEM

2.	CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Smart Key > Trouble Codes

Result	Proceed to
DTCs are not output	A
DTCs are output	B

GO TO DIAGNOSTIC TROUBLE CODE CHART

3.	CHECK WAVE ENVIRONMENT

(a) Bring the electrical key transmitter sub-assembly approximately 0.3 m (0.984 ft.) from the front door outside handle assembly (for front passenger door) and perform an entry function check.

Click here

Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the front door outside handle assembly (for front passenger door).
When the electrical key transmitter sub-assembly is brought near the front door outside handle assembly (for front passenger door), the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
If the inspection result is that the problem only occurs in certain locations or at certain times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.
There may be wave interference if the vehicle is near broadcasting antennas, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc. In this case, move the vehicle to a different location and check if there is any improvement.
If a tool for checking radio waves, such as a signal strength meter, is available, move around the area while observing both the LF band (used by the vehicle antenna to form the detection area) and RF band (used by the electrical key transmitter sub-assembly for transmission) to check for locations where there is wave interference.
When checking the operation of the entry lock function several times, it can be operated up to 2 times consecutively. To operate the function 3 times or more consecutively, the doors need to be unlocked once. However, this is only for the entry lock function, other door lock operations, such as a wireless door lock operation can be performed consecutively.

*a	Approximately 0.3 m (0.984 ft.)

Result	Proceed to
Entry function does not operate normally	A
Entry function operates normally	B

AFFECTED BY WAVE INTERFERENCE

4.	READ VALUE USING TECHSTREAM (P-DOOR TOUCH SENSOR)

(a) Turn the engine switch off.

(b) Open and close the front passenger door.

(c) With the electrical key transmitter sub-assembly outside of the vehicle, press the lock switch of the electrical key transmitter sub-assembly to lock all of the doors.

(d) Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly and approximately 0.3 m (0.984 ft.) from the front passenger door.

(e) Check that the LED of the electrical key transmitter sub-assembly blinks.

(f) Read the Data List according to the display on the Techstream.

(g) Touch the unlock sensor on the backside of the front door outside handle assembly (for front passenger door).

HINT:

When checking the operation of the unlock sensor again, make sure to perform the procedure from step (a).

Body Electrical > Smart Key > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

P-Door Touch Sensor

Front passenger door touch sensor (unlock sensor)

OFF or ON

OFF: Front passenger door touch sensor (unlock sensor) not touched

ON: Front passenger door touch sensor (unlock sensor) touched

Displays whether the unlock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily).
Use this Data List item to help determine if there is an unlock sensor malfunction when the entry unlock function does not operate.

Body Electrical > Smart Key > Data List

Tester Display
P-Door Touch Sensor

OK:

The Techstream display changes correctly in response to the operation of the front door outside handle assembly (for front passenger door).

*a	Unlock Sensor (Backside)

GO TO STEP 7

5.	READ VALUE USING TECHSTREAM (P-DOOR TRIGGER SWITCH)

(a) Turn the engine switch off.

(b) Open and close the front passenger door.

(c) Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly and approximately 0.3 m (0.984 ft.) from the front passenger door.

(d) Read the Data List according to the display on the Techstream.

(e) Touch the lock sensor of the front door outside handle assembly (for driver door).

HINT:

If the door does not lock even when touching the lock sensor, touch it with your palm.
When checking the operation of the lock sensor again, make sure to perform the procedure from step (a).

Body Electrical > Smart Key > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

P-Door Trigger Switch

Front passenger door touch sensor (lock sensor)

OFF or ON

OFF: Front passenger door touch sensor (lock sensor) not touched

ON: Front passenger door touch sensor (lock sensor) touched

Displays whether the lock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily).
Use this Data List item to help determine if there is a lock sensor malfunction when the entry lock function does not operate.

Body Electrical > Smart Key > Data List

Tester Display
P-Door Trigger Switch

HINT:

OK:

The Techstream display changes correctly in response to the operation of the front door outside handle assembly (for front passenger door).

*a	Lock Sensor

GO TO STEP 7

6.	CHECK KEY DIAGNOSTIC MODE

(a) Check the following antenna in key diagnostic mode.

Body Electrical > Smart Key > Utility

Tester Display
Communication Check(Key Diag Mode)

(b) Select either channel 1 or channel 2 and perform key diagnostic mode inspection for each channel.

(1) Check the electrical key antenna (for front passenger door):

HINT:

Select either channel 1 or channel 2 and perform the key diagnostic mode inspection for each channel.
If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.

*a	0.7 to 1 m (2.30 to 3.28 ft.)

Result	Proceed to
Wireless buzzer does not sound	A
Wireless buzzer sounds	B

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

7.	CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR FRONT PASSENGER DOOR))

(a) Disconnect the K10 certification ECU (smart key ECU assembly) connector.

(b) Disconnect the I7 front door outside handle assembly (for front passenger door) connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
K10-15 (CLG2) - I7-6 (ANTE2)	Always	Below 1 Ω
K10-14 (CG2B) - I7-4 (CLGB)	Always	Below 1 Ω
K10-15 (CLG2) or I7-6 (ANTE2) - Other terminals and body ground	Always	10 kΩ or higher
K10-14 (CG2B) or I7-4 (CLGB) - Other terminals and body ground	Always	10 kΩ or higher

(d) Reconnect the K10 certification ECU (smart key ECU assembly) connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.	CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO FRONT PASSENGER DOOR ELECTRICAL KEY ANTENNA)

(a) Using an oscilloscope, check the waveform.

OK:

Tester Connection

Condition

Tool Setting

Specified Condition

I7-6 (ANTE2) - I7-4 (CLGB)

Procedure:

Engine switch off
All doors closed
Electrical key transmitter sub-assembly not inside vehicle
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought outside detection area*)

5 V/DIV., 100 ms/DIV.

Pulse generation

(See waveform 1)

*: For details about the entry function detection area, refer to Operation Check.

Click here

Front view of wire harness connector

(to Front Door Outside Handle Assembly (for Front Passenger Door))

Waveform 1

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

9.	CHECK ENTRY LOCK OPERATION

(a) Connect all connectors and check that the function operates normally.

Click here

Result	Proceed to
Entry function does not operate normally	A
Entry function operates normally	B

END (CONNECTOR WAS NOT CONNECTED SECURELY)

10.	REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR FRONT PASSENGER DOOR)

(a) Replace the front door outside handle assembly (for front passenger door) with a new one or the front door outside handle assembly (for driver door) if it is functioning properly.

Click here

11.	CHECK ENTRY LOCK OPERATION

(a) Check that the function operates normally.

Click here

Result	Proceed to
Entry function operates normally	A
Entry function does not operate normally	B

END (FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR FRONT PASSENGER DOOR) WAS DEFECTIVE)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

Front Passenger Side Door Entry Lock Function does not Operate

DESCRIPTION

If the entry lock function does not operate for the front passenger door only, but the entry unlock function operates, the request code is being transmitted properly from the for passenger door. In this case, there may be a problem related to the lock sensor (connection between the certification ECU (smart key ECU assembly) and front door outside handle assembly (for front passenger door)).

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

The smart key system (for Entry Function, Gasoline Model) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Entry Function, Gasoline Model) after confirming that the communication systems are functioning properly.
Click here
When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
Check that there are no electrical key transmitter sub-assemblies in the vehicle.
Before replacing the certification ECU (smart key ECU assembly), refer to Precaution.
Click here
After repair, confirm that no DTCs are output.

PROCEDURE

1.	CHECK POWER DOOR LOCK CONTROL SYSTEM

(a) When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to the switch operation.

Click here

OK:

Door locks operate normally.

GO TO POWER DOOR LOCK CONTROL SYSTEM

2.	READ VALUE USING TECHSTREAM (P-DOOR TRIGGER SWITCH)

(a) Turn the engine switch off.

(b) Open and close the front passenger door.

(c) Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly and approximately 0.3 m (0.984 ft.) from the front passenger door.

(d) Read the Data List according to the display on the Techstream.

(e) Touch the lock sensor of the front door outside handle assembly (for front passenger door).

HINT:

If the door does not lock even when touching the lock sensor, touch it with your palm.
When checking the operation of the lock sensor again, make sure to perform the procedure from step (a).

Body Electrical > Smart Key > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

P-Door Trigger Switch

Front passenger door touch sensor (lock sensor)

OFF or ON

OFF: Front passenger door touch sensor (lock sensor) not touched

ON: Front passenger door touch sensor (lock sensor) touched

Displays whether the lock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily).
Use this Data List item to help determine if there is a lock sensor malfunction when the entry lock function does not operate.

Body Electrical > Smart Key > Data List

Tester Display
P-Door Trigger Switch

HINT:

OK:

The Techstream display changes correctly in response to the operation of the front door outside handle assembly (for front passenger door).

*a	Lock Sensor

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

3.	CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR FRONT PASSENGER DOOR))

(a) Disconnect the K10 certification ECU (smart key ECU assembly) connector.

(b) Disconnect the I7 front door outside handle assembly (for front passenger door) connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
K10-15 (CLG2) - I7-6 (ANTE2)	Always	Below 1 Ω
K10-14 (CG2B) - I7-4 (CLGB)	Always	Below 1 Ω
K10-15 (CLG2) or I7-6 (ANTE2) - Other terminals and body ground	Always	10 kΩ or higher
K10-14 (CG2B) or I7-4 (CLGB) - Other terminals and body ground	Always	10 kΩ or higher

(d) Reconnect the I7 front door outside handle assembly (for front passenger door) connector.

(e) Reconnect the K10 certification ECU (smart key ECU assembly) connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.	CHECK FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR FRONT PASSENGER DOOR) (INPUT TO CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

Component with harness connected

(Certification ECU (Smart Key ECU Assembly))

Waveform 1

Lock sensor not touched

Lock sensor touched

(a) Using an oscilloscope, check the waveform.

OK:

Tester Connection

Condition

Tool Setting

Specified Condition

K10-15 (CLG2) - G40-18 (E)

Procedure:

Engine switch off
Electrical key transmitter sub-assembly brought outside vehicle
All doors closed
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought outside detection area*)
Front passenger door lock sensor touched

5 V/DIV., 40 ms/DIV.

Pulse generation

(See waveform 1)

*: For details about the entry function detection area, refer to Operation Check.

Click here

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR FRONT PASSENGER DOOR)

Front Passenger Side Door Entry Unlock Function does not Operate

DESCRIPTION

If the entry unlock function does not operate for the front passenger door only, but the entry lock function operates, the request code is being transmitted properly from the front passenger door. In this case, there may be a problem related to the unlock sensor (connection between the certification ECU (smart key ECU assembly) and front door outside handle assembly (for front passenger door)).

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

The smart key system (for Entry Function, Gasoline Model) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Entry Function, Gasoline Model) after confirming that the communication systems are functioning properly.
Click here
When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
Check that there are no electrical key transmitter sub-assemblies in the vehicle.
Before replacing the certification ECU (smart key ECU assembly), refer to Precaution.
Click here
After repair, confirm that no DTCs are output.

PROCEDURE

1.	CHECK POWER DOOR LOCK CONTROL SYSTEM

(a) When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to the switch operation.

Click here

OK:

Door locks operate normally.

GO TO POWER DOOR LOCK CONTROL SYSTEM

2.	READ VALUE USING TECHSTREAM (FR DOOR LOCK POS)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

FR Door Lock Pos

Front door RH unlock detection switch signal

UNLOCK or LOCK

UNLOCK: Front door RH unlocked

LOCK: Front door RH locked

Body Electrical > Main Body > Data List

Tester Display
FR Door Lock Pos

OK:

The Techstream display changes correctly in response to the lock/unlock operation of the front passenger door.

GO TO LIGHTING SYSTEM (Proceed to Door Unlock Detection Switch Circuit)

3.	READ VALUE USING TECHSTREAM (P-DOOR TOUCH SENSOR)

(a) Turn the engine switch off.

(b) Open and close the front passenger door.

(c) With the electrical key transmitter sub-assembly outside of the vehicle, press the lock switch of the electrical key transmitter sub-assembly to lock all of the doors.

(d) Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly and approximately 0.3 m (0.984 ft.) from the front passenger door.

(e) Check that the LED of the electrical key transmitter sub-assembly blinks.

(f) Read the Data List according to the display on the Techstream.

(g) Touch the unlock sensor on the backside of the front door outside handle assembly (for front passenger door).

HINT:

When checking the operation of the unlock sensor again, make sure to perform the procedure from step (a).

Body Electrical > Smart Key > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

P-Door Touch Sensor

Front passenger door touch sensor (unlock sensor)

OFF or ON

OFF: Front passenger door touch sensor (unlock sensor) not touched

ON: Front passenger door touch sensor (unlock sensor) touched

Displays whether the unlock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily).
Use this Data List item to help determine if there is an unlock sensor malfunction when the entry unlock function does not operate.

Body Electrical > Smart Key > Data List

Tester Display
P-Door Touch Sensor

OK:

The Techstream display changes correctly in response to the operation of the front door outside handle assembly (for front passenger door).

*a	Unlock Sensor (Backside)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

4.	CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR FRONT PASSENGER DOOR))

(a) Disconnect the K10 certification ECU (smart key ECU assembly) connector.

(b) Disconnect the I7 front door outside handle assembly (for front passenger door) connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
K10-15 (CLG2) - I7-6 (ANTE2)	Always	Below 1 Ω
K10-14 (CG2B) - I7-4 (CLGB)	Always	Below 1 Ω
K10-15 (CLG2) or I7-6 (ANTE2) - Other terminals and body ground	Always	10 kΩ or higher
K10-14 (CG2B) or I7-4 (CLGB) - Other terminals and body ground	Always	10 kΩ or higher

(d) Reconnect the I7 front door outside handle assembly (for front passenger door) connector.

(e) Reconnect the K10 certification ECU (smart key ECU assembly) connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.	CHECK FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR FRONT PASSENGER DOOR) (INPUT TO CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

Component with harness connected

(Certification ECU (Smart Key ECU Assembly))

Waveform 1

Unlock sensor not touched

Unlock sensor touched

(a) Using an oscilloscope, check the waveform.

OK:

Tester Connection

Condition

Tool Setting

Specified Condition

K10-15 (CLG2) - G40-18 (E)

Procedure:

Engine switch off
Electrical key transmitter sub-assembly brought outside vehicle
All doors locked
Electrical key transmitter sub-assembly not near the vehicle
Front passenger door unlock sensor touched

5 V/DIV., 50 ms/DIV.

Pulse generation

(See waveform 1)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR FRONT PASSENGER DOOR)

How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

CAUTION:

Make sure to check the items listed below before proceeding with troubleshooting.

Do not perform "Smart Code Reset" (all key ID erasure) until all of the malfunctions and symptoms have been confirmed and resolved. If all key ID erasure is performed without confirming or resolving malfunctions, key registration will be unable to be performed, resulting in unnecessary part replacement.
Check that the smart key system has not been canceled in the customize function.

HINT:

Replace parts related to the wireless door lock and smart key system according to the inspection procedure.
If the wireless door lock and smart key system does not operate, first check the customize item and make sure that the wireless door lock and smart key system is not turned off.
The wireless door lock and smart key system primarily uses the following systems.
- Power door lock system
- Wireless door lock system
- Smart key system (for Entry Function, Gasoline Model)
- Smart key system (for Start Function, Gasoline Model)
  - : Steering lock function
  - : Immobiliser function
Perform troubleshooting procedures with other registered keys if available.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

(a) Confirm how vehicle was brought to workshop

Vehicle was driven
Vehicle was towed

HINT:

The malfunction location may be narrowed down by confirming whether the vehicle was driven or towed.

GO TO SMART KEY SYSTEM (for Start Function, Gasoline Model)

Key Luggage Compartment Lock-in Prevention Function does not Operate

DESCRIPTION

If the entry luggage compartment lock-in prevention function does not operate, there may be a problem with the communication between the No. 1 indoor electrical key antenna assembly (inside luggage compartment) and electrical key transmitter sub-assembly, wave interference or a malfunction in the certification ECU (smart key ECU assembly).

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

The smart key system (for Entry Function, Gasoline Model) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Entry Function, Gasoline Model) after confirming that the communication systems are functioning properly.
Click here
When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
Check that there are no electrical key transmitter sub-assemblies in the vehicle.
Before replacing the certification ECU (smart key ECU assembly), refer to smart key system (for Entry Function) Precaution.
Click here
After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

PROCEDURE

1.	CHECK ENTRY LUGGAGE COMPARTMENT OPEN OPERATION

(a) Connect all connectors and check that the entry luggage compartment open function operates.

Click here

Result	Proceed to
Luggage open function operates normally	A
Luggage open function does not operate normally	B

GO TO OTHER PROBLEM (Proceed to Luggage Compartment Door Entry Unlock Function does not Operate when Key is Outside Luggage Compartment)

2.	CHECK WAVE ENVIRONMENT

(a) Bring the electrical key transmitter sub-assembly near the No. 1 indoor electrical key antenna assembly (inside luggage compartment), and check that the entry luggage compartment lock-in prevention function operates.

NOTICE:

In order to prevent the electrical key transmitter sub-assembly from being locked inside the vehicle, perform this inspection with the window of a door open.

HINT:

Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the No. 1 indoor electrical key antenna assembly (inside luggage compartment).
When the electrical key transmitter sub-assembly is brought near the No. 1 indoor electrical key antenna assembly (inside luggage compartment), the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
If the operation check is normal, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.
There may be wave interference if the vehicle is near broadcasting antennas, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc. In this case, move the vehicle to a different location and check if there is any improvement.
If a tool for checking radio waves, such as a signal strength meter, is available, move around the area while observing both the LF band (used by the vehicle antenna to form the detection area) and RF band (used by the electrical key transmitter sub-assembly for transmission) to check for locations where there is wave interference.

*a	Inspection Point

Result	Proceed to
Entry functions does not operate normally	A
Entry functions operate normally	B

AFFECTED BY WAVE INTERFERENCE

3.	CHECK KEY DIAGNOSTIC MODE

(a) Check the following antenna in key diagnostic mode.

Body Electrical > Smart Key > Utility

Tester Display
Communication Check(Key Diag Mode)

(b) Select either channel 1 or channel 2 and inspect key diagnostic mode for each channel.

(1) Check the No. 1 indoor electrical key antenna assembly (inside luggage compartment):

When the electrical key transmitter sub-assembly is at either inspection point, check that the wireless buzzer sounds.

HINT:

If the buzzer sounds, it can be determined that the No. 1 indoor electrical key antenna assembly (inside luggage compartment) is operating normally.
If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.

*a	Inspection Point

Result	Proceed to
Wireless buzzer does not sound	A
Wireless buzzer sounds	B

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

4.	CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE COMPARTMENT))

(a) Disconnect the K10 certification ECU (smart key ECU assembly) connector.

(b) Disconnect the K13 No. 1 indoor electrical key antenna assembly (inside luggage compartment) connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
K10-11 (CLG7) - K13-1 (ANTE7)	Always	Below 1 Ω
K10-10 (CG7B) - K13-3 (CLGB)	Always	Below 1 Ω
K10-11 (CLG7) or K13-1 (ANTE7) - Other terminals and body ground	Always	10 kΩ or higher
K10-10 (CG7B) or K13-3 (CLGB) - Other terminals and body ground	Always	10 kΩ or higher

(d) Reconnect the K10 certification ECU (smart key ECU assembly) connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.	CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE COMPARTMENT))

(a) Using an oscilloscope, check the wave form.

OK:

Tester Connection

Condition

Tool Setting

Specified Condition

K13-1 (ANTE7) - K13-3 (CLGB)

Procedure:

Door is closed
Engine switch off
Electrical key transmitter sub-assembly not inside vehicle
Driver door lock sensor touched

2 V/DIV., 500 ms/DIV.

Pulse generation

(See waveform 1)

*a	Front view of wire harness connector (to No. 1 Indoor Electrical Key Antenna Assembly (Inside Luggage compartment))
*b	Waveform 1
*c	Driver door lock sensor not touched
*d	Driver door lock sensor touched

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

6.	REPLACE NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE COMPARTMENT)

(a) Replace the No. 1 indoor electrical key antenna assembly (inside luggage compartment).

Click here

7.	CHECK KEY LOCK-IN PREVENTION FUNCTION

(a) Check that the entry luggage compartment lock-in prevention function operates normally.

Click here

OK:

Entry luggage compartment lock-in prevention function operates normally.

END (NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE COMPARTMENT) WAS DEFECTIVE)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

Luggage Compartment Door Entry Unlock Function does not Operate when Key is Outside Luggage Compartment

DESCRIPTION

If the entry luggage compartment door open function does not operate, there may be a malfunction in the luggage electrical key switch circuit or certification ECU (smart key ECU assembly), which receives a signal from the luggage electrical key switch circuit, or a communication error between the vehicle (electrical key antenna (outside luggage compartment)) and electrical key transmitter sub-assembly.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

The smart key system (for Entry Function, Gasoline Model) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Entry Function, Gasoline Model) after confirming that the communication systems are functioning properly.
Click here
When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
Check that there are no electrical key transmitter sub-assemblies in the vehicle.
Before replacing the certification ECU (smart key ECU assembly), refer to smart key system (for Entry Function) Precaution.
Click here
After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

HINT:

If the entry luggage compartment open functions does not operate, the cause of the malfunction may be stored in the certification ECU (smart key ECU assembly).
If the cause of the malfunction is stored in the certification ECU (smart key ECU assembly), the following table is helpful in checking whether the malfunction was caused by wave interference.

Body Electrical > Smart Key > Utility

Tester Display
Operation History

PROCEDURE

1.	READ VALUE USING TECHSTREAM (LUGGAGE COMPARTMENT DOOR OPEN MODE)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(d) Enter the following menus: Body Electrical / Smart Key / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Smart Key > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Trunk Open Mode	Entry luggage compartment open mode	OFF or ON	Customize setting displayed	-

Body Electrical > Smart Key > Data List

Tester Display
Trunk Open Mode

Result	Proceed to
Trunk Open Mode is ON	A
Trunk Open Mode is OFF	B

PERFORM CUSTOMIZE SETTING (Proceed to Customize Parameters)

2.	CHECK LUGGAGE COMPARTMENT DOOR OPENER SYSTEM

(a) Operate the luggage compartment door opening switch assembly in the vehicle and check that the luggage compartment door opens.

Click here

Result	Proceed to
The luggage compartment door opens	A
The luggage compartment door does not open	B

GO TO LUGGAGE COMPARTMENT DOOR OPENER SYSTEM

3.	READ VALUE USING TECHSTREAM (TR/B-DOOR UNLOCK SW)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(d) Enter the following menus: Body Electrical / Smart Key / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Smart Key > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Tr/B-Door Unlock SW

Luggage electrical key switch

OFF or ON

OFF: Luggage electrical key switch not pushed

ON: Luggage electrical key switch pushed

Body Electrical > Smart Key > Data List

Tester Display
Tr/B-Door Unlock SW

OK:

The Techstream display changes correctly in response to the operation of the luggage electrical key switch.

GO TO STEP 9

4.	CHECK WAVE ENVIRONMENT

(a) Bring the electrical key transmitter sub-assembly approximately 0.3 m (0.984 ft.) from the electrical key antenna (outside luggage compartment) and perform an entry luggage compartment open function check.

HINT:

Communication may not be possible if the electrical key transmitter sub-assembly is brought within 0.2 m (0.656 ft.) of the rear bumper.
When the electrical key transmitter sub-assembly is brought near the electrical key antenna (outside luggage compartment), the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
If the inspection result is that the problem only occurs in certain locations or at certain times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.
There may be wave interference if the vehicle is near broadcasting antennas, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc. In this case, move the vehicle to a different location and check if there is any improvement.
If a tool for checking radio waves, such as a signal strength meter, is available, move around the area while observing both the LF band (used by the vehicle antenna to form the detection area) and RF band (used by the electrical key transmitter sub-assembly for transmission) to check for locations where there is wave interference.

OK:

Entry functions operate normally.

*a	Approximately 0.3 m (0.984 ft.)

AFFECTED BY WAVE INTERFERENCE

5.	CHECK KEY DIAGNOSTIC MODE

(a) Check the following antenna in key diagnostic mode.

Body Electrical > Smart Key > Utility

Tester Display
Communication Check(Key Diag Mode)

(b) When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the electrical key antenna (outside luggage compartment), check that the wireless buzzer sounds.

HINT:

Select either channel 1 or channel 2 and inspect key diagnostic mode for each channel.
If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.

OK:

Wireless buzzer sounds.

*a	0.7 to 1.0 m (2.30 to 3.28 ft.)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

6.	CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE COMPARTMENT))

(a) Disconnect the K10 certification ECU (smart key ECU assembly) connector.

(b) Disconnect the P2 electrical key antenna (outside luggage compartment) connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
K10-13 (CLG8) - P2-2 (ANTE8)	Always	Below 1 Ω
K10-12 (CG8B) - P2-1 (CLGB)	Always	Below 1 Ω
K10-13 (CLG8) or P2-2 (ANTE8) - Other terminals and body ground	Always	10 kΩ or higher
K10-12 (CG8B) or P2-1 (CLGB) - Other terminals and body ground	Always	10 kΩ or higher

(d) Reconnect the K10 certification ECU (smart key ECU assembly) connector.

(e) Reconnect the P2 electrical key antenna (outside luggage compartment) connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.	CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE COMPARTMENT))

Component with harness connected

(Certification ECU (Smart Key ECU Assembly))

Waveform 1

(a) Using an oscilloscope, check the waveform.

OK:

Tester Connection

Condition

Tool Setting

Specified Condition

K10-13 (CLG8) - G40-18 (E)

Procedure:

Engine switch off
Electrical key transmitter sub-assembly brought outside vehicle
All doors closed
Luggage electrical key switch off → on

2 V/DIV., 500 ms/DIV.

Pulse generation

(See waveform 1)

K10-12 (CG8B) - G40-18 (E)

Procedure:

Engine switch off
Electrical key transmitter sub-assembly brought outside vehicle
All doors closed
Luggage electrical key switch off → on

2 V/DIV., 500 ms/DIV.

Pulse generation

(See waveform 1)

REPLACE ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE COMPARTMENT)

8.	CHECK ENTRY LUGGAGE COMPARTMENT OPEN OPERATION

(a) Connect all connectors and check that the entry luggage compartment open function operates.

Click here

Result	Proceed to
Luggage open function operates normally	A
Luggage open function does not operate normally	B

END (CONNECTOR WAS NOT CONNECTED SECURELY)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

9.	INSPECT LUGGAGE ELECTRICAL KEY SWITCH

(a) Remove the luggage electrical key switch.

Click here

(b) Inspect the luggage electrical key switch.

Click here

REPLACE LUGGAGE ELECTRICAL KEY SWITCH

10.	CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - LUGGAGE ELECTRICAL KEY SWITCH)

(a) Disconnect the K10 certification ECU (smart key ECU assembly) connector.

(b) Disconnect the P1 luggage electrical key switch connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
K10-26 (TSW5) - P1-2	Always	Below 1 Ω
P1-1 - Body ground	Always	Below 1 Ω
K10-26 (TSW5) or P1-2 - Other terminals and body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

11.	CHECK ENTRY LUGGAGE COMPARTMENT OPEN OPERATION

(a) Connect all connectors and check that the entry luggage compartment open function operates.

Click here

Result	Proceed to
Luggage open function operates normally	A
Luggage open function does not operate normally	B

END (CONNECTOR WAS NOT CONNECTED SECURELY)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

Operation Check

OPERATION CHECK

CHECK CUSTOMIZE PARAMETERS

NOTICE:

The operation check below is based on the non-customized initial condition of the vehicle.

Click here

CHECK THE ENTRY UNLOCK FUNCTION

(a) Check the entry unlock function (driver door, front passenger door).

(1) Perform a wireless lock door operation to lock the door, touch the unlock sensor built into the backside of the front door outside handle assembly of the driver door while carrying the electrical key transmitter sub-assembly and check that the door unlocks.

(2) Inspect the entry unlock detection area. Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly and approximately 0.7 to 1 m (2.30 to 3.28 ft.) from the vehicle as shown in the illustration and check that the LED (red) of the electrical key transmitter sub-assembly blinks.

*a	0.7 to 1 m (2.30 to 3.28 ft.)

(3) With the system in unlock standby mode, grasp the front door outside handle assembly (for driver door) and check that the door unlocks.

HINT:

The system is in unlock standby mode when the electrical key transmitter sub-assembly is in the detection area and the key ID code sent by the electrical key transmitter sub-assembly matches the key ID code stored by the certification ECU (smart key ECU assembly).
Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the door outside handle assembly.
Inspect the front passenger door using the same procedure.

(4) Check the unlock response sensitivity. With the system in unlock standby mode, touch the area shown in the illustration and check that the door unlocks.

NOTICE:

If the sensor is touched too quickly or released too slowly, the sensor may not react and the door will not unlock.

*a	Unlock Sensor (Backside)

HINT:

Inspect the front passenger door using the same procedure.

CHECK THE ENTRY LOCK FUNCTION

(a) Check the entry lock function (driver door, front passenger door).

NOTICE:

If the electrical key transmitter sub-assembly is in the vehicle but outside the detection area (on the instrument panel, in the glove box, on the floor) and a door lock operation is performed, the key lock-in prevention function will not operate and the electrical key transmitter sub-assembly will be locked inside the vehicle.

*a	Lock Sensor

(1) With the door closed and unlocked, touch the lock sensor of the front door outside handle assembly of the driver door while carrying the electrical key transmitter sub-assembly and check that the door locks.

HINT:

If the door does not lock even when touching the lock sensor, touch it with your palm.
Inspect the front passenger door using the same procedure.

(2) Inspect the entry lock operating range. Hold the electrical key transmitter sub-assembly approximately 0.7 to 1 m (2.30 to 3.28 ft.) below the bottom edge of the door glass and approximately 0.3 m (0.984 ft.) from the vehicle as shown in the illustration, touch the lock sensor and check that the door locks.

HINT:

If the door does not lock even when touching the lock sensor, touch it with your palm.
As communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the front door outside handle assembly, the door may not lock if the lock sensor is touched with the same hand that is carrying the electrical key transmitter sub-assembly, etc.
If the key lock-in prevention function buzzer sounds, radio waves from the indoor electrical key antenna may be leaking from the vehicle.
Inspect the front passenger door using the same procedure.
The entry lock function cannot be operated more than 3 times consecutively.

*a	0.7 to 1 m (2.30 to 3.28 ft.)

CHECK ENTRY LUGGAGE DOOR OPEN FUNCTION

(a) Check the entry luggage compartment open function (luggage electrical key switch).

(1) Perform a wireless lock operation to lock the doors, operate of the luggage electrical key switch while carrying the electrical key transmitter sub-assembly and check that the luggage compartment door opens.

*1	Luggage Electrical Key Switch
*a	0.7 to 1 m (2.30 to 3.28 ft.)

(2) Inspect the entry luggage compartment open operating range. While standing at the rear of the vehicle, hold the electrical key transmitter sub-assembly so that it is facing the direction shown in the above illustration at the same height as the luggage electrical key switch and approximately 0.7 to 1 m (2.30 to 3.28 ft.) from the vehicle, press the luggage electrical key switch and check that the luggage compartment door opens.

CHECK PUSH-BUTTON START FUNCTION

Click here

CHECK KEY LOCK-IN PREVENTION FUNCTION (VEHICLE INTERIOR)

NOTICE:

In order to prevent the electrical key transmitter sub-assembly from being locked inside the vehicle, perform this inspection with the window of a door open.

(a) Check the key lock-in prevention function (vehicle interior).

(1) Turn the engine switch off.

(2) Place the electrical key transmitter sub-assembly on a front or rear seat.

(3) Close all of the doors and make sure they are unlocked.

(4) Touch a door lock sensor and check that the doors do not lock and the key lock-in prevention function buzzer (external) sounds for approximately 5 seconds.

CHECK KEY LOCK-IN PREVENTION FUNCTION (IN LUGGAGE COMPARTMENT)

NOTICE:

In order to prevent the electrical key transmitter sub-assembly from being locked inside the vehicle, perform this inspection with the window of a door open.

If the electrical key transmitter sub-assembly is in any of the following locations, the key lock-in prevention function may not operate:

Near the spare tire or at the edge of the luggage compartment.
In a metal bag or near a metal object.

(a) Check the key lock-in prevention function (in luggage compartment).

(1) Place the electrical key transmitter sub-assembly in the luggage compartment with all doors locked. Check that: 1) closing the luggage compartment door triggers the wireless buzzer (which lasts approximately 2 seconds), and 2) pressing the luggage electrical key switch opens the luggage compartment door.

(2) Inspect the key lock-in prevention detection area. Pay attention to the direction of the electrical key transmitter sub-assembly shown in the illustration. When the electrical key transmitter sub-assembly is in either of the 2 locations in the illustration, check that: 1) closing the luggage compartment door sounds the wireless buzzer, and 2) pressing the luggage electrical key switch opens the luggage compartment door.

*a	Inspection Point

HINT:

Perform the inspection for both inspection points.

(3) Inspect the key lock-in prevention detection area and the electrical key and tire pressure monitoring system receiver assembly for wave leaks. Hold the electrical key transmitter sub-assembly at the same height as the lower edge of the luggage compartment door aligning it with the center of the rear of the vehicle. Pay attention to the direction and position of the electrical key transmitter sub-assembly shown in the illustration.

*a	0.1 m or more (0.328 ft. or more)

HINT:

If the wireless buzzer sounds, the No. 1 indoor electrical key antenna assembly (inside luggage compartment) may have a wave leak.
When the electrical key transmitter sub-assembly is over 0.1 m (0.328 ft.) from the rear bumper, the wireless buzzer does not sound.

CHECK ANSWER-BACK FUNCTION

(a) Check the answer-back function (hazard warning light flashing and buzzer sounding).

Entry Operation	Hazard Warning Light	Wireless Buzzer
Entry Lock	Flashes once	Sounds once
Entry Unlock	Flashes twice	Sounds twice

CHECK TRANSMITTER BATTERY SAVING MODE FUNCTION

Click here

CHECK ENTRY CANCEL FUNCTION

Click here

KEY DIAGNOSTIC MODE (Using Techstream)

HINT:

With key diagnostic mode, it is possible to check if the electrical key transmitter sub-assembly is operating properly with the selected electrical key antenna and within the selected detection area by the sounding of the wireless buzzer.
If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.

(a) Enter the following menus: Body Electrical / Smart Key / Utility / Communication Check(Key Diag Mode).

Body Electrical > Smart Key > Utility

Tester Display
Communication Check(Key Diag Mode)

(b) Inspect the appropriate item according to the following table.

Tester Display	Inspection Item
[CH1/CH2] Overhead + Driver Side*1	Front door outside handle assembly (electrical key antenna) (for driver door)
[CH1] Overhead + Driver Side*1
[CH2] Overhead + Driver Side*1
[CH1/CH2] Overhead + Passenger Side*2	Front door outside handle assembly (electrical key antenna) (for front passenger door)
[CH1] Overhead + Passenger Side*2
[CH2] Overhead + Passenger Side*2
[CH1/CH2] Overhead + Front Room*3	No. 1 indoor electrical key antenna assembly (front floor)
[CH1] Overhead + Front Room*3
[CH2] Overhead + Front Room*3
[CH1/CH2] Overhead + Rear Room*4	No. 1 indoor electrical key antenna assembly (rear floor)
[CH1] Overhead + Rear Room*4
[CH2] Overhead + Rear Room*4
[CH1/CH2] Overhead + Luggage*5	Electrical key antenna (outside luggage compartment)
[CH1] Overhead + Luggage*5
[CH2] Overhead + Luggage*5
[CH1/CH2] Luggage + Luggage (inside)*6	No. 1 indoor electrical key antenna assembly (inside luggage)
[CH1] Luggage + Luggage (inside)*6
[CH2] Luggage + Luggage (inside)*6
[CH1/CH2] Luggage + Luggage*7	Electrical key antenna (outside luggage compartment)
[CH1] Luggage + Luggage*7
[CH2] Luggage + Luggage*7
[CH1/CH2] Immobiliser Amp*8	Amplifier (engine switch)
[CH1] Immobiliser Amp*8
[CH2] Immobiliser Amp*8

[CH1]: Channel 1 is set.
[CH2]: Channel 2 is set.
[CH1/CH2]: Channel 1 and 2 switch automatically at a specific interval*.
*: If the electrical key transmitter sub-assembly is detected with either channel 1 or 2, the buzzer sounds.

(c) Bring the electrical key transmitter sub-assembly near the selected electrical key antenna and check that the wireless buzzer sounds.

HINT:

The buzzer sounds in short, repeated beeps for all items except "Overhead + Rear Room"*4. For "Overhead + Rear Room"*4, the buzzer sounds in one long, continuous beep.

(d) *1: Front door outside handle assembly (for driver door)

*a	0.7 to 1 m (2.30 to 3.28 ft.)

HINT:

Hold the electrical key transmitter sub-assembly at the same height as the front door outside handle assembly in the position shown in the illustration.
*2: Perform the same inspection for the front passenger door.

(e) *3: No. 1 indoor electrical key antenna assembly (front floor)

*a	Inspection Point

HINT:

Place the electrical key transmitter sub-assembly on the front seat cushion of the driver seat or front passenger seat.

(f) *4: No. 1 indoor electrical key antenna assembly (rear floor)

*a	Inspection Point

HINT:

Place the electrical key transmitter sub-assembly on the rear seat cushion.

(g) *5, *7: Electrical key antenna (outside luggage compartment)

*a	0.7 to 1 m (2.30 to 3.28 ft.)

HINT:

Hold the electrical key transmitter sub-assembly at the same height as the rear bumper upper surface and align it with the center of the rear of the vehicle as shown in the illustration.

(h) *6: No. 1 indoor electrical key antenna assembly (inside luggage compartment)

*a	Inspection Point

HINT:

Place the electrical key transmitter sub-assembly on the luggage room floor.

(i) *8: Amplifier (engine switch)

*1	Engine Switch
*2	Electrical Key Transmitter Sub-assembly

HINT:

While facing the logo side of the electrical key transmitter sub-assembly toward the engine switch, hold the transmitter near the engine switch.

Parts Location

PARTS LOCATION

ILLUSTRATION

*1	LUGGAGE DOOR COURTESY LIGHT SWITCH	*2	FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (for LH)
*3	FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (for RH)	*4	FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH
*5	FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH	*6	LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY
*7	REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (for LH)	*8	REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (for RH)
*9	REAR DOOR LOCK WITH MOTOR ASSEMBLY LH	*10	REAR DOOR LOCK WITH MOTOR ASSEMBLY RH

ILLUSTRATION

*1	LUGGAGE ELECTRICAL KEY SWITCH	*2	WIRELESS DOOR LOCK BUZZER
*3	FRONT DOOR OUTSIDE HANDLE ASSEMBLY (for Driver Door) - ELECTRICAL KEY ANTENNA - LOCK SENSOR - UNLOCK SENSOR	*4	FRONT DOOR OUTSIDE HANDLE ASSEMBLY (for Front Passenger Door) - ELECTRICAL KEY ANTENNA - LOCK SENSOR - UNLOCK SENSOR
*5	NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (FRONT FLOOR)	*6	NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (REAR FLOOR)
*7	NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE COMPARTMENT)	*8	ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE COMPARTMENT)
*9	ELECTRICAL KEY AND TIRE PRESSURE MONITORING SYSTEM RECEIVER ASSEMBLY	-	-

ILLUSTRATION

ENGINE SWITCH

INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

- AM2 FUSE

DLC3

CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

COMBINATION METER ASSEMBLY

MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

Precaution

PRECAUTION

CAUTION REGARDING INTERFERENCE WITH ELECTRONIC DEVICES

CAUTION:

As weak radio waves are emitted from the electrical key transmitter sub-assembly, if a pacemaker is being used, be sure to read the pacemaker instruction manual and the following.

People with implantable cardiac pacemakers, cardiac resynchronization therapy-pacemakers or implantable cardioverter defibrillators should keep away from the smart key system antennas. The radio waves may affect the operation of such devices. If necessary, the entry function can be disabled. Ask your dealer for details, such as the frequency of radio waves and timing of the emitted radio waves. Then, consult your doctor to see if you should disable the entry function.
Click here
User of any electrical medical device other than implantable cardiac pacemakers, cardiac resynchronization therapy-pacemakers or implantable cardioverter defibrillators should consult the manufacturer of the device for information about its operation under the influence of radio waves. Radio waves could have unexpected effects on the operation of such medical devices.
Ask your dealer for details for disabling the smart key system.

Exterior antenna	Front door outside handle assembly (for Driver Door) Front door outside handle assembly (for Front Passenger Door) Electrical key antenna (outside luggage compartment)
Interior antenna	No. 1 indoor electrical key antenna assembly (front floor) No. 1 indoor electrical key antenna assembly (rear floor) No. 1 indoor electrical key antenna assembly (inside luggage compartment)

HINT:

Smart key system can be disabled by customize function.

Click here

PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL

NOTICE:

After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.
Click here
After disconnecting and reconnecting the cable to the negative (-) battery terminal cable, the entry unlock function may not operate. If this occurs, the entry unlock function can be restored by performing a wireless door lock and unlock operation.
When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected:

System Name	See Procedure
Lane Departure Alert System (w/ Steering Control)
Intelligent Clearance Sonar System
Parking Assist Monitor System
Panoramic View Monitor System
Pre-collision System
Lighting System (for Gasoline Model with Cornering Light)

SMART KEY SYSTEM SPECIFICATIONS

(a) Some customers may inquire about the frequency used by the smart key system on various models. This repair manual contains the applicable specifications of the smart key system.

Transmitter Detection Area

Specifications for Smart Key System Antenna LF Output Power

	Specification
	Frequency	Output Power/Electric Field Intensity	Modulation Method	Mounting Point in Vehicle
Inside Passenger Compartment	134.2 kHz	94.4 dBuV/m at 3 m	AM	Inside vehicle
Inside Luggage Compartment	134.2 kHz	94.4 dBuV/m at 3 m	AM	Inside luggage compartment
Outside Vehicle	134.2 kHz	95 dBuV/m at 3 m	AM	Inside door handle
Outside Vehicle	134.2 kHz	95 dBuV/m at 3 m	AM	Inside rear bumper

Specifications for Smart Key System Antenna LF Transmission Timing

	Transmission Timing
	Vehicle Remains Parked	Entering or Exiting the Vehicle	Vehicle is being Driven
Inside Passenger Compartment	Does not transmit	Operating door locks Operating engine switch / depressing brake pedal Opening or closing doors With engine switch on (IG) or engine switch on (ACC), and shift lever in P, closing any door when electrical key transmitter sub-assembly cannot be detected inside vehicle (continues for 3 seconds until electrical key transmitter sub-assembly is detected or engine switch is turned off) Engine switch is off after driving for more than 20 minutes With shift lever not in P, closing any door when electrical key transmitter sub-assembly cannot be detected inside vehicle (continues for 3 seconds until electrical key transmitter sub-assembly is detected)	When electrical key transmitter sub-assembly is not detected inside cabin while vehicle is being driven (transmits for 4 seconds)
Inside Luggage Compartment	Does not transmit	Operating door locks / pressing the luggage electrical key switch Closing the luggage compartment door Opening or closing doors	Does not transmit
Outside Vehicle	When door is locked, transmits at 250 ms intervals (stops when door is unlocked)	Touch the lock sensor Pressing luggage electrical key switch Touching unlock sensor in power saving mode	Does not transmit

PRECAUTION WHEN USING TECHSTREAM

(a) When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.

PRECAUTION RELATED TO VEHICLE BATTERY

(a) The entry unlock function may not operate immediately after the cables are reconnected to the battery. If this occurs, the entry unlock function can be restored by performing a wireless door lock and unlock or mechanical key operation.

(b) When the doors are locked, electrical waves are sent from the vehicle, which uses power from the battery. This means that the battery may be depleted if the vehicle is left for a long time. When not using the vehicle for a long time, disconnect the cable from the negative (-) battery terminal or cancel the smart key system.

HINT:

Smart key system can be disabled by customize function.

Click here

PRECAUTION WHEN REPLACING PARTS

(a) If replacing any of the following parts, refer to the Registration.

Click here

(1) Certification ECU (smart key ECU assembly)

(2) Main body ECU (multiplex network body ECU)

(3) Electrical key transmitter sub-assembly

(b) If the electrical key and tire pressure monitoring system receiver assembly is replaced, it is necessary to register the electrical key transmitter sub-assemblies to the new electrical key and tire pressure monitoring system receiver assembly and perform registration and initialization.

HINT:

For registration.
Click here
For initialization.
Click here

PRECAUTIONS FOR ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

(a) The electrical key transmitter sub-assembly is a precision instrument. Be sure to observe the following:

(1) Do not subject the electrical key transmitter sub-assembly to strong physical shocks.

(2) Do not keep the electrical key transmitter sub-assembly in a high temperature area for a long time.

(3) Do not use an ultrasonic washing machine to clean the electrical key transmitter sub-assembly.

(4) Do not use the electrical key transmitter sub-assembly near any magnets or magnetized items.

(5) Do not place the electrical key transmitter sub-assembly near magnetic equipment, such as digital audio players, induction cookers, medical devices that generate low-frequency electromagnetic waves, etc.

(6) Do not attach any stickers to the electrical key transmitter sub-assembly.

(7) Do not disassemble the electrical key transmitter sub-assemblies.

(8) The mechanical key should only be used in an emergency, such as when the transmitter battery is depleted.

(b) When the doors are locked and an electrical key transmitter sub-assembly is in the detection area of an electrical key antenna, the transmitter battery may be depleted due to periodic communication between the electrical key transmitter sub-assembly and the vehicle. If the vehicle is not to be used for a long time, keep the key away from the vehicle (more than 2 m (6.56 ft.)).

HINT:

To set the transmitter battery saving mode function, refer to the smart key system (for Start Function, Gasoline Model).

Click here

PRECAUTIONS WHEN INSPECTING SMART KEY SYSTEM (for Entry Function, Gasoline Model)

(a) General precaution for the smart key system (for Entry Function, Gasoline Model):

(1) Always carry the electrical key transmitter sub-assembly.

(b) The smart key system (for Entry Function, Gasoline Model) may not operate normally or the key detection area may decrease in the following situations:

(1) The transmitter battery is depleted.

(2) There are TV towers, electric power plants, broadcasting stations, gas stations or other facilities that generate strong radio waves or electrical noise nearby.

(3) Wireless communication devices, such as walkie-talkies, cell phones, cordless telephones, digital audio players, portable game systems, etc., are carried together with the electrical key transmitter sub-assembly.

(4) The electrical key transmitter sub-assembly is covered by or in contact with objects made of metal, such as coins, certain types of cards, etc.

(5) Metallic film is applied to the rear window glass.

(6) A radio wave type keyless entry system or wireless remote is operated nearby.

(7) An electrical key transmitter sub-assembly from another vehicle is nearby.

(8) The electrical key transmitter sub-assembly is placed near equipment that generates high-voltage or electrical noise.

(9) The electrical key transmitter sub-assembly is placed near an electronic device such as a battery charger.

(1) Due to the design of the vehicle body, there are some areas in which proper system operation is difficult.

(2) Even if the electrical key transmitter sub-assembly is in the vehicle exterior detection area, the electrical key transmitter sub-assembly may not be properly detected if the electrical key transmitter sub-assembly is near a window, a door handle or the center of the bumper.

(3) Even if an electrical key transmitter sub-assembly is in a vehicle interior detection area, the electrical key transmitter sub-assembly may not be properly detected if it is on the instrument panel, in the glove box or on the floor.

(4) Depending on the way the electrical key transmitter sub-assembly is held, the electrical key transmitter sub-assembly may not operate properly.

(d) As weak radio waves are emitted from the electrical key transmitter sub-assembly, if a pacemaker is being used, be sure to read the pacemaker instruction manual.

(e) The smart key system (for Entry Function, Gasoline Model) will not operate under the following conditions:

(1) The procedure to cancel the smart key system (for Entry Function, Gasoline Model) has been performed.

(2) There is no transmitter battery or the transmitter battery is depleted (the LED of the electrical key transmitter sub-assembly does not blink when an electrical key transmitter sub-assembly switch is pressed).

PRECAUTIONS FOR ENTRY UNLOCK FUNCTION

(a) When unlocking the doors, make sure to grasp the door outside handle assembly, ensuring contact with the sensor on the inner part of the handle. Pull the handle after confirming that the door has unlocked.

(b) If the door outside handle assembly is grasped with gloved hands, unlocking may be delayed or may not occur.

(c) When performing an entry unlock operation, make sure to check that the doors are unlocked before pulling a door outside handle assembly to open a door.

(d) When attempting to open a door suddenly or immediately after entering a vehicle exterior detection area, the door may not unlock. In this case the system automatically performs the door unlock operation 4 times. However, if a door outside handle assembly is being pulled at this time, the door may not unlock due to mechanical reasons. If the door is not unlocked, return the door outside handle to its original position and pull the handle after confirming that the door has unlocked.

(e) If the electrical key transmitter sub-assembly is brought too close to the door outside handle assembly, it may not be possible to unlock the door with the entry unlock function.

(f) If an electrical key transmitter sub-assembly is within a vehicle exterior detection area, the door can be unlocked even when a person other than the person carrying the electrical key transmitter sub-assembly grasps the door outside handle assembly. However, doors other than the door for which the matching code is detected cannot be unlocked (if the electrical key transmitter sub-assembly is in the vehicle exterior detection area of the driver side door and the front door outside handle assembly (for driver door) is held, the doors can be unlocked. However, if the front door outside handle assembly (for front passenger door) is held, the doors cannot be unlocked).

(g) After a wireless door lock, manual door lock or key-linked door lock operation is performed with the electrical key transmitter sub-assembly in an interior detection area or near the vehicle, an entry unlock operation cannot be performed. Therefore, when a wireless door lock operation is performed near a window or door handle, the entry unlock may not be able to be operated. To unlock the doors, perform a wireless door unlock operation.

(h) If a door is not opened after a door unlock operation, the doors automatically lock after approximately 60 seconds*.

(i) If an electrical key transmitter sub-assembly is within a vehicle exterior detection area and a large amount of water is applied to a door outside handle assembly, such as by a car wash or heavy rain, the sensor may react and the entry unlock operation may be performed. However, the doors will automatically lock after approximately 60 seconds if a door is not opened*.

(j) If the electrical key transmitter sub-assembly is being carried together with an electrical key transmitter sub-assembly from another vehicle with a smart key system and the door outside handle assembly is held, the time before the door is unlocked by the entry unlock operation may be more than normal.

HINT:

*: When the auto lock function operates after an entry unlock operation, if an electrical key transmitter sub-assembly is detected in the cabin, the doors will be unlocked by the door ajar warning function.

PRECAUTIONS FOR ENTRY LOCK FUNCTION

(a) When performing an entry lock operation, if the lock sensor on the door outside handle assembly is touched too quickly, the door may not lock.

(b) If the electrical key transmitter sub-assembly is brought near the vehicle interior (window, door outside handle assembly), the entry lock function may not operate. Also, the key reminder warning buzzer may sound and the entry unlock function may stop operating. In this case, move the electrical key transmitter sub-assembly away from the vehicle interior (window, door outside handle assembly), perform an entry lock operation, and then perform an entry unlock operation.

(c) If the electrical key transmitter sub-assembly is being carried and a lock operation is performed from the driver door while the driver door is open (the door is ajar), the door ajar warning does not operate.

(d) If the electrical key transmitter sub-assembly is left on the instrument panel, in the glove box or on the floor, the key reminder warning function may not operate and the electrical key transmitter sub-assembly may be locked in the vehicle when a door lock operation is performed. Always carry the electrical key transmitter sub-assembly.

(e) The entry unlock operation cannot be performed for approximately 3 seconds after an operation that locks the doors, such as an entry lock or wireless door lock operation, is performed.

(f) When checking the operation of the entry lock function several times, it can only be operated up to 2 times consecutively depending on the setting. To perform the operation 3 times or more consecutively, the doors need to be unlocked once (any unlock operation is acceptable). However, this is only for the entry lock function, other door lock functions, such as the wireless door lock function, can be operated consecutively.

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

If a problem occurs in certain locations or at certain times of day, check for the possibility of wave interference.
When the electrical key transmitter sub-assembly is brought near an electrical key and tire pressure monitoring system receiver assembly (RF band), door outside handle assembly (LF band), indoor electrical key antenna (LF band) or any of the electrical key antennas (LF band), the possibility of wave interference decreases. By doing this, whether wave interference is causing the problem can be checked.
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Smart Key System (for Entry Function, Gasoline Model)

Symptom	Suspected Area	Link
Key vehicle inside lock-in prevention function does not operate	External electrical waves
	Harness or connector
	No. 1 indoor electrical key antenna assembly (front floor)
	No. 1 indoor electrical key antenna assembly (rear floor)
	Certification ECU (Smart key ECU assembly)
	Transmitter battery
	instrument panel junction block assembly
	Engine switch
All door entry lock/unlock functions and wireless functions do not operate	Lighting system
	Power door lock control system
	External electrical waves
	Code registration
	Transmitter battery
	Harness or connector
	Electrical key transmitter sub-assembly
	Electrical key and tire pressure monitoring system receiver assembly
	Main body ECU (Multiplex network body ECU)
	Certification ECU (Smart key ECU assembly)
All door entry lock/unlock functions do not operate, but wireless functions operate	Check customize setting (Entry cancel function (manual operation))
	External electrical waves
	Electrical key transmitter sub-assembly
	Certification ECU (Smart key ECU assembly)
Driver side door entry unlock function does not operate	Power door lock control system
	Harness or connector
	Front door outside handle assembly (for driver door)
	Lighting system
	Certification ECU (Smart key ECU assembly)
Front passenger side door entry unlock function does not operate	Power door lock control system
	Harness or connector
	Front door outside handle assembly (for front passenger door)
	Lighting system
	Certification ECU (Smart key ECU assembly)
Driver side door entry lock and unlock functions do not operate	Power door lock control system
	External electrical waves
	Harness or connector
	Front door outside handle assembly (for driver door)
	Certification ECU (Smart key ECU assembly)
Front passenger side door entry lock and unlock functions do not operate	Power door lock control system
	External electrical waves
	Harness or connector
	Front door outside handle assembly (for front passenger door)
	Certification ECU (Smart key ECU assembly)
Driver side door entry lock function does not operate	Power door lock control system
	Harness or connector
	Front door outside handle assembly (for driver door)
	Certification ECU (Smart key ECU assembly)
Front passenger side door entry lock function does not operate	Power door lock control system
	Harness or connector
	Front door outside handle assembly (for front passenger door)
	Certification ECU (Smart key ECU assembly)
Luggage compartment door entry unlock function does not operate when key is outside luggage compartment	Check customize setting (Trunk Open Mode)
	External electrical waves
	Luggage compartment door opener system
	Harness or connector
	Luggage electrical key switch
	No. 1 indoor electrical key antenna assembly (inside luggage compartment)
	Certification ECU (Smart key ECU assembly)
Key luggage compartment lock-in prevention function does not operate	External electrical waves
	Harness or connector
	No. 1 indoor electrical key antenna assembly (inside luggage compartment)
	Certification ECU (Smart key ECU assembly)
Entry interior alarm does not sound	METER/GAUGE System
Entry exterior alarm and answer-back buzzer do not sound	Check customize setting (Wireless Buzzer Resp)
	Lighting system
	Harness or connector
	instrument panel junction block assembly
	Wireless door lock buzzer
	Main body ECU (Multiplex network body ECU)
	Certification ECU (Smart key ECU assembly)
Touching unlock sensor for certain period of time does not unlock all doors	Check customize setting (Door Unlock Mode 2 and Door Unlock Sensor Touch Time Adjust)
	Power door lock control system
	Certification ECU (Smart Key ECU Assembly)
When returning to the vehicle, although door unlock operation was not performed, doors were in an unlocked state	Power door lock control system
When returning to the vehicle, although door lock operation was not performed, doors were in a locked state	Power door lock control system

System Diagram

SYSTEM DIAGRAM

SMART KEY SYSTEM (for Entry Function, Gasoline Model)

SMART KEY SYSTEM (for Start Function, Gasoline Model)

Click here

POWER DOOR LOCK CONTROL SYSTEM (for Gasoline Model)

Click here

WIRELESS DOOR LOCK CONTROL SYSTEM (for Gasoline Model)

Click here

LUGGAGE COMPARTMENT DOOR OPENER SYSTEM (for Gasoline Model)

Click here

Terminals Of Ecu

TERMINALS OF ECU

CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

(a) Disconnect the G40 certification ECU (smart key ECU assembly) connector.

(b) Measure the voltage and resistance according to the value(s) in the table below.

Tester Connection	Wiring Color	Input/Output	Terminal Description	Condition	Specified Condition
G40-18 (E) - Body ground	W-B - Body ground	-	Ground	Always	Below 1 Ω
G40-4 (+B) - G40-18 (E)	W - W-B	Input	Power supply	Always	11 to 14 V
G40-15 (CUTB) - G40-18 (E)	R - W-B	Input	Dark current cut pin*	Always	11 to 14 V

*: In order to prevent the vehicle battery from being depleted when the vehicle is shipped long distances, a fuse that cuts unnecessary electrical load while the vehicle is being shipped is installed in the circuit. If the fuse is removed, the circuit becomes open. If the fuse that is between the vehicle battery and terminal CUTB is removed and the circuit is open, the certification ECU (smart key ECU assembly) changes to a certain control mode (example: the transmission of radio waves every 0.25 seconds, which form the detection area, stops).

(d) Measure the voltage and check for pulses according to the value(s) in the table below.

Tester Connection	Wiring Color	Input/Output	Terminal Description	Condition	Specified Condition
G40-17 (IG1D) - G40-18 (E)	R - W-B	Output	IG power supply	Engine switch off → on (IG)	Below 1 V → 10 V or higher
K10-17 (CLG1) - G40-18 (E)	R - W-B	Output	Output to driver door electrical key antenna (request signal (challenge) is sent to door electrical key antenna from certification ECU (smart key ECU assembly) to form detection area)	Procedure: Engine switch off All doors closed Electrical key transmitter sub-assembly not inside vehicle All doors locked through wireless operation (electrical key transmitter sub-assembly brought inside detection area*)	Pulse generation (See waveform 1)
K10-17 (CLG1) - G40-18 (E)	R - W-B	Output		Procedure: Engine switch off All doors closed Electrical key transmitter sub-assembly not inside vehicle All doors locked through wireless operation (electrical key transmitter sub-assembly brought outside detection area*)	Pulse generation (See waveform 2)
K10-17 (CLG1) - G40-18 (E)	R - W-B	Input	Input to driver door lock sensor (front door outside handle assembly (for driver door) lock sensor on signal is sent to the certification ECU (smart key ECU assembly))	Procedure: Engine switch off Electrical key transmitter sub-assembly brought outside vehicle All doors closed All doors locked through wireless operation (electrical key transmitter sub-assembly brought outside detection area*) Driver door lock sensor touched	Pulse generation (See waveform 3)
K10-17 (CLG1) - G40-18 (E)	R - W-B	Input	Input to driver door unlock sensor (when system is in unlock standby mode and unlock sensor is touched, door electrical key antenna sends unlock sensor input signal (sensing) to certification ECU (smart key ECU assembly))	Procedure: Engine switch off Electrical key transmitter sub-assembly brought outside vehicle All doors locked Electrical key transmitter sub-assembly not near the vehicle Driver door unlock sensor touched	Pulse generation (See waveform 4)
K10-16 (CG1B) - G40-18 (E)	GR - W-B	Output	Output to driver door electrical key antenna (terminal on opposite side of component from CLG1 output terminal)	Procedure: Engine switch off All doors closed Electrical key transmitter sub-assembly not inside vehicle All doors locked through wireless operation (electrical key transmitter sub-assembly brought inside detection area*)	Pulse generation (See waveform 5)
K10-16 (CG1B) - G40-18 (E)	GR - W-B	Output		Procedure: Engine switch off All doors closed Electrical key transmitter sub-assembly not inside vehicle All doors locked through wireless operation (electrical key transmitter sub-assembly brought outside detection area*)	Pulse generation (See waveform 6)
K10-15 (CLG2) - G40-18 (E)	R - W-B	Output	Output to front passenger door electrical key antenna (request signal (challenge) is sent to door electrical key antenna from certification ECU (smart key ECU assembly) to form detection area)	Procedure: Engine switch off All doors closed Electrical key transmitter sub-assembly not inside vehicle All doors locked through wireless operation (electrical key transmitter sub-assembly brought inside detection area*)	Pulse generation (See waveform 1)
K10-15 (CLG2) - G40-18 (E)	R - W-B	Output		Procedure: Engine switch off All doors closed Electrical key transmitter sub-assembly not inside vehicle All doors locked through wireless operation (electrical key transmitter sub-assembly brought outside detection area*)	Pulse generation (See waveform 2)
K10-15 (CLG2) - G40-18 (E)	R - W-B	Input	Input to front passenger door lock sensor (front door outside handle assembly (for front passenger door) lock sensor on signal is sent to the certification ECU (smart key ECU assembly))	Procedure: Engine switch off Electrical key transmitter sub-assembly brought outside vehicle All doors closed All doors locked through wireless operation (electrical key transmitter sub-assembly brought outside detection area*) Front passenger door lock sensor touched	Pulse generation (See waveform 3)
K10-15 (CLG2) - G40-18 (E)	R - W-B	Input	Input to front passenger door unlock sensor (when system is in unlock standby mode and unlock sensor is touched, door electrical key antenna sends unlock sensor input signal (sensing) to certification ECU (smart key ECU assembly))	Procedure: Engine switch off Electrical key transmitter sub-assembly brought outside vehicle All doors locked Electrical key transmitter sub-assembly not near the vehicle Front passenger door unlock sensor touched	Pulse generation (See waveform 4)
K10-14 (CG2B) - G40-18 (E)	W - W-B	Output	Output to front passenger door electrical key antenna (terminal on opposite side of component from CLG2 output terminal)	Procedure: Engine switch off All doors closed Electrical key transmitter sub-assembly not inside vehicle All doors locked through wireless operation (electrical key transmitter sub-assembly brought inside detection area*)	Pulse generation (See waveform 5)
K10-14 (CG2B) - G40-18 (E)	W - W-B	Output		Procedure: Engine switch off All doors closed Electrical key transmitter sub-assembly not inside vehicle All doors locked through wireless operation (electrical key transmitter sub-assembly brought outside detection area*)	Pulse generation (See waveform 6)
K10-11 (CLG7) - G40-18 (E)	GR - W-B	Output	Output to No. 1 indoor electrical key antenna assembly (inside luggage compartment)	Procedure: Door is closed Engine switch off Electrical key transmitter sub-assembly not inside vehicle Driver door lock sensor touched	Pulse generation (See waveform 7)
K10-10 (CG7B) - G40-18 (E)	R - W-B	Output	Output to No. 1 indoor electrical key antenna assembly (inside luggage compartment) (terminal on opposite side of component from CLG7 output terminal)	Procedure: Door is closed Engine switch off Electrical key transmitter sub-assembly not inside vehicle Driver door lock sensor touched	Pulse generation (See waveform 7)
K10-13 (CLG8) - G40-18 (E)	G - W-B	Output	Output to electrical key antenna (outside luggage compartment)	Procedure: Engine switch off Electrical key transmitter sub-assembly brought outside vehicle All doors closed Luggage electrical key switch off → on	Pulse generation (See waveform 8)
K10-12 (CG8B) - G40-18 (E)	L - W-B	Output	Output to electrical key antenna (outside luggage compartment) (terminal on opposite side of component from CLG8 output terminal)	Procedure: Engine switch off Electrical key transmitter sub-assembly brought outside vehicle All doors closed Luggage electrical key switch off → on	Pulse generation (See waveform 8)
K10-26 (TSW5) - G40-18 (E)	LG - W-B	Input	Luggage electrical key switch signal input	Luggage electrical key switch off → on	Pulse generation (See waveform 9)
K10-18 (RCO) - G40-18 (E)	B - W-B	Output	Output to electrical key and tire pressure monitoring system receiver assembly (Power supply for electrical key and tire pressure monitoring system receiver assembly. Certification ECU (smart key ECU assembly) outputs 5 V when receiver starts operating.)	Procedure: Engine switch off Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed	Pulse generation (See waveform 10)
K10-19 (RDAM) - G40-18 (E)	G - W-B	Input	Electrical key and tire pressure monitoring system receiver assembly verifies data received from electrical key transmitter sub-assembly. Electrical key and tire pressure monitoring system receiver assembly sends data from electrical key transmitter sub-assembly to certification ECU (smart key ECU assembly) (Electrical key and tire pressure monitoring system receiver assembly intermittently grounds 12 V signal from certification ECU (smart key ECU assembly)).	Proceed: Engine switch off All doors locked Electrical key transmitter sub-assembly not inside vehicle Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed	Pulse generation (See waveform 11)
K10-20 (CSEL) - G40-18 (E)	BE - W-B	Output	Communication channel switching circuit	Procedure: Engine switch off All doors closed	Below 1 V → Pulse generation

*: For details about the entry function detection area, refer to Operation Check.
Click here

(e) Using an oscilloscope, check waveform 1.

NOTICE:

The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

Waveform 1 (Reference)

Item

Content

Tester Connection

K10-17 (CLG1) - G40-18 (E)

K10-15 (CLG2) - G40-18 (E)

Tool Setting

5 V/DIV., 500 ms/DIV.

Condition

Procedure:

Engine switch off
All doors closed
Electrical key transmitter sub-assembly not inside vehicle
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought inside detection area*)

*: For details about the entry function detection area, refer to Operation Check.
Click here

(f) Using an oscilloscope, check waveform 2.

NOTICE:

The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

Waveform 2 (Reference)

Item

Content

Tester Connection

K10-17 (CLG1) - G40-18 (E)

K10-15 (CLG2) - G40-18 (E)

Tool Setting

5 V/DIV., 100 ms/DIV.

Condition

Procedure:

Engine switch off
All doors closed
Electrical key transmitter sub-assembly not inside vehicle
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought outside detection area*)

*: For details about the entry function detection area, refer to Operation Check.
Click here

(g) Using an oscilloscope, check waveform 3.

NOTICE:

The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

*a	Lock sensor not touched
*b	Lock sensor touched

Waveform 3 (Reference)

Item

Content

Tester Connection

K10-17 (CLG1) - G40-18 (E)

K10-15 (CLG2) - G40-18 (E)

Tool Setting

5 V/DIV., 40 ms/DIV.

Condition

Procedure:

Engine switch off
Electrical key transmitter sub-assembly brought outside vehicle
All doors closed
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought outside detection area*)
Lock sensor not touched → touched

*: For details about the entry function detection area, refer to Operation Check.
Click here

(h) Using an oscilloscope, check waveform 4.

NOTICE:

The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

*a	Unlock sensor not touched
*b	Unlock sensor touched

Waveform 4 (Reference)

Item

Content

Tester Connection

K10-17 (CLG1) - G40-18 (E)

K10-15 (CLG2) - G40-18 (E)

Tool Setting

5 V/DIV., 50 ms/DIV.

Condition

Procedure:

Engine switch off
Electrical key transmitter sub-assembly brought outside vehicle
All doors locked
Electrical key transmitter sub-assembly not near the vehicle
Unlock sensor not touched → touched

(i) Using an oscilloscope, check waveform 5.

NOTICE:

The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

Waveform 5 (Reference)

Item

Content

Tester Connection

K10-16 (CG1B) - G40-18 (E)

K10-14 (CG2B) - G40-18 (E)

Tool Setting

5 V/DIV., 500 ms/DIV.

Condition

Procedure:

Engine switch off
All doors closed
Electrical key transmitter sub-assembly not inside vehicle
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought inside detection area*)

*: For details about the entry function detection area, refer to Operation Check.
Click here

(j) Using an oscilloscope, check waveform 6.

NOTICE:

The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

Waveform 6 (Reference)

Item

Content

Tester Connection

K10-16 (CG1B) - G40-18 (E)

K10-14 (CG2B) - G40-18 (E)

Tool Setting

5 V/DIV., 100 ms/DIV.

Condition

Procedure:

Engine switch off
All doors closed
Electrical key transmitter sub-assembly not inside vehicle
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought outside detection area*)

*: For details about the entry function detection area, refer to Operation Check.
Click here

(k) Using an oscilloscope, check waveform 7.

NOTICE:

The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

*a	Driver door lock sensor not touched
*b	Driver door lock sensor touched

Waveform 7 (Reference)

Item

Content

Tester Connection

K10-11 (CLG7) - G40-18 (E)

K10-10 (CG7B) - G40-18 (E)

Tool Setting

2 V/DIV., 500 ms/DIV.

Condition

Procedure:

Door is closed
Engine switch off
Electrical key transmitter sub-assembly not inside vehicle
Driver door lock sensor touched

(l) Using an oscilloscope, check waveform 8.

NOTICE:

The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

Waveform 8 (Reference)

Item

Content

Tester Connection

K10-13 (CLG8) - G40-18 (E)

K10-12 (CG8B) - G40-18 (E)

Tool Setting

2 V/DIV., 500 ms/DIV.

Condition

Procedure:

Engine switch off
Electrical key transmitter sub-assembly brought outside vehicle
All doors closed
Luggage electrical key switch off → on

(m) Using an oscilloscope, check waveform 9.

NOTICE:

The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

*a	Checking for switch on signal at short intervals

Waveform 9 (Reference)

Item	Content
Tester Connection	K10-26 (TSW5) - G40-18 (E)
Tool Setting	2 V/DIV., 500 ms/DIV.
Condition	Luggage electrical key switch off → on

(n) Using an oscilloscope, check waveform 10.

NOTICE:

The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

*a	Before lock or unlock switch of electrical key transmitter sub-assembly pressed
*b	After lock or unlock switch of electrical key transmitter sub-assembly pressed

Waveform 10 (Reference)

Item

Content

Tester Connection

K10-18 (RCO) - G40-18 (E)

Tool Setting

2 V/DIV., 500 ms/DIV.

Condition

Procedure:

Engine switch off
Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area
Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed

(o) Using an oscilloscope, check waveform 11.

NOTICE:

The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

*a	Before lock or unlock switch of electrical key transmitter sub-assembly pressed
*b	After lock or unlock switch of electrical key transmitter sub-assembly pressed

Waveform 11 (Reference)

Item

Content

Tester Connection

K10-19 (RDAM) - G40-18 (E)

Tool Setting

5 V/DIV., 500 ms/DIV.

Condition

Procedure:

Engine switch off
All doors locked
Electrical key transmitter sub-assembly not inside vehicle
Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area
Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed

CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

(a) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

Click here

(b) Measure the voltage and resistance according to the value(s) in the table below.

Tester Connection	Wiring Color	Input/Output	Terminal Description	Condition	Specified Condition
MB-11 (GND1) - Body ground	-	-	Ground	Always	Below 1 Ω
MB-31 (BECU) - Body ground	-	Input	Battery power supply (for CPU)	Always	11 to 14 V

Touching Unlock Sensor for Certain Period of Time does not Unlock All Doors

DESCRIPTION

If the entry unlock function of the driver door cannot be operated by touching and holding the unlock sensor of the driver door, but can be operated through other methods, it can be determined that the request code is being transmitted properly from the driver door. In this case, the certification ECU (smart key ECU assembly) may be malfunctioning.

CAUTION / NOTICE / HINT

NOTICE:

When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
The smart key system (for Entry Function, Gasoline Model) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Entry Function, Gasoline Model) after confirming that the communication systems are functioning properly.
Click here
Before replacing the certification ECU (smart key ECU assembly), refer to Precaution.
Check that there are no electrical key transmitter sub-assemblies in the vehicle.

HINT:

Touching the unlock sensor for a certain period of time to unlock all of the doors can only be performed if the customize setting "Door Unlock Mode2" is set to "Driver".

PROCEDURE

1.	CHECK CUSTOMIZE SETTING (DOOR UNLOCK SENSOR TOUCH TIME ADJUST)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(d) Enter the following menus: Customize Setting / Smart Key / Access.

Smart Key / Access

Tester Display	Description	Default	Setting	ECU
Door Unlock Sensor Touch Time Adjust	Function that sets the length of time the unlock sensor on the door outside handle assembly (for driver door) must be touched to unlock all of the doors	Middle	00:OFF,01:Short,10:Middle,11:Long	Certification ECU (Smart Key ECU Assembly)

Result	Proceed to
The customize setting is set to Short, Middle or Long	A
The customize setting is set to OFF	B

PERFORM CUSTOMIZE SETTING

2.	CHECK ENTRY UNLOCK FUNCTION (OPERATION CHECK)

(a) Turn the engine switch off.

(b) Open and close the driver door.

(c) With the electrical key transmitter sub-assembly outside of the vehicle, press the lock switch of the electrical key transmitter sub-assembly to lock all of the doors.

(d) Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly and approximately 0.3 m (0.984 ft.) from the driver door.

(e) Check that the LED of the electrical key transmitter sub-assembly blinks.

(f) Touch and hold the unlock sensor on the door outside handle assembly (for driver door) for 2.5 seconds or more.

HINT:

When checking the operation of the unlock sensor again, make sure to perform the procedure from step (a).

*a	Unlock Sensor (Backside)

(g) Check that all of the doors unlock.

Result	Proceed to
All of the doors do not unlock	A
Any door does not unlock	B

GO TO POWER DOOR LOCK CONTROL SYSTEM

3.	CHECK POWER DOOR LOCK CONTROL SYSTEM

(a) When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to the switch operation.

Click here

Result	Proceed to
The door locks operate normally	A
The door locks do not operate normally	B

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

GO TO POWER DOOR LOCK CONTROL SYSTEM

Security Horn Assembly

Smart Key System(for Start Function, Gasoline Model)

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