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).
(c) Turn the Techstream on. (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 |
| B |
 | PERFORM CUSTOMIZE SETTING (Proceed to Customize Parameters) |
|
A |
 | |
| 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 |
| B |
| GO TO LUGGAGE COMPARTMENT DOOR OPENER SYSTEM |
|
A | |
| |
| 3. |
READ VALUE USING TECHSTREAM (TR/B-DOOR UNLOCK SW) |
(a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG).
(c) Turn the Techstream on. (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.
| NG |
| GO TO STEP 9 |
|
OK | |
| |
| 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.) | | |
| OK |
| AFFECTED BY WAVE INTERFERENCE |
|
NG | |
| |
| 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.) | | |
| OK |
| REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
|
NG | |
| |
| 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.
(c) Measure the resistance according to the value(s) in the table below.
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.
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 7. |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE COMPARTMENT)) |
|
*a | Component with harness connected
(Certification ECU (Smart Key ECU Assembly)) |
*b | 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) |
| NG |
| REPLACE ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE COMPARTMENT) |
|
OK | |
| |
| 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 |
| A |
| END (CONNECTOR WAS NOT CONNECTED SECURELY) |
| B |
| 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
| NG |
| REPLACE LUGGAGE ELECTRICAL KEY SWITCH |
|
OK | |
| |
| 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. (c) Measure the resistance according to the value(s) in the table below.
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 |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 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 |
| A |
| END (CONNECTOR WAS NOT CONNECTED SECURELY) |
| B |
| REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) | | 
