TERMINALS OF ECU CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
 (a) Disconnect the K10 and G40 certification ECU (smart key ECU assembly) connectors.
(b) Measure the resistance and voltage according to the value(s) in the table below.
HINT: Measure the values on the wire harness side with the connector disconnected. |
Tester Connection | Wiring Color |
Input / Output | Terminal Description |
Condition | Specified Condition |
Related Data List Item/DTC | |
K10-25 (STP1) - Body ground |
BE - Body ground | Input |
Stop light switch signal |
Brake pedal depressed → Brake pedal released |
9 V or higher → 1 V or less |
Stop Light Switch1 | |
G40-4 (+B) - G40-18 (E) |
B - W-B | Input |
Power source | Power switch off |
11 to 14 V | - | |
G40-22 (P) - G40-18 (E) |
R - W-B | Input |
P position signal | Shift lever in P → Shift lever not in P |
30 kΩ or higher → Below 200 Ω |
Shift P Signal | |
G40-15 (CUTB) - Body ground |
R - Body ground | Input |
Dark current cut pin* |
Power switch off | 11 to 14 V |
- | | G40-18 (E) - Body ground |
W-B - Body ground | - |
GND | Always |
Below 1 Ω | - | |
G40-21 (SSW2) - Body ground |
L - Body ground | Input |
SSW2 contact signal HINT: Backup for SSW1. Behaves the same way as SSW1. |
Power switch pushed → Power switch not pushed |
Below 15 Ω → 10 kΩ or higher |
Start Switch2 | |
G40-23 (SSW1) - Body ground |
GR - Body ground | Input |
SSW1 contact signal | Power switch pushed → Power switch not pushed |
Below 15 Ω → 10 kΩ or higher |
Start Switch1 | |
G40-19 (SPD) - Body ground |
R - Body ground | Input |
Vehicle speed signal |
Always | 30 kΩ or higher |
Vehicle Speed Signal |
- *: In order to prevent the vehicle auxiliary 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 auxiliary 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).
(c) Connect the K10 and G40 certification ECU (smart key ECU assembly) connectors.
(d) Measure the voltage and resistance, and check for pulses according to the value(s) in the table below. |
Tester Connection | Wiring Color |
Input / Output | Terminal Description |
Condition | Specified Condition |
Related Data List Item/DTC | |
G40-14 (SLP) - G40-18 (E) |
G - W-B | Input |
Steering lock position signal |
Steering locked → Steering unlocked |
11 to 14 V → 1.5 V or less |
Steering Unlock Switch | |
G40-25 (SLR+) - G40-18 (E) |
W - W-B | Output |
Steering lock motor operation command signal (Steering lock motor operation permission signal sent from the certification ECU (smart key ECU assembly)) |
When a door is opened, the steering lock motor will be operated if all of the following conditions are met:
- The steering is unlocked.
- The power switch is off.
- The shift lever is in P.
| Pulse generation
(See waveform 1) | - | |
G40-13 (LIN) - G40-18 (E) |
B - W-B | Input / Output |
LIN communication line |
Power switch on (IG) |
Pulse generation | Steering Lock Start Cond | |
G40-3 (IGB) - G40-18 (E) |
GR - W-B | Output |
IGB signal | Power switch off → Power switch on (IG) |
1 V or less → 8.5 V or higher |
- | | G40-22 (P) - G40-18 (E) |
R - W-B | Input |
P position signal | Shift lever in P → Shift lever not in P |
9 V or higher → 2.76 V or less |
Shift P Signal | |
G40-21 (SSW2) - G40-18 (E) |
L - W-B | Input |
SSW2 contact signal HINT: Backup for SSW1. Behaves the same way as SSW1. |
Power switch not pushed → Power switch pushed |
9 V or higher → 1 V or less |
Start Switch2 | |
G40-23 (SSW1) - G40-18 (E) |
GR - W-B | Input |
SSW1 contact signal | Power switch not pushed → Power switch pushed |
9 V or higher → 1 V or less |
Start Switch1 | |
G40-16 (ACCD) - G40-18 (E) |
LG - W-B | Output |
ACC signal | Power switch off → Power switch on (ACC) |
1 V or less → 8.5 V or higher |
ACC Relay Monitor | |
G40-17 (IG1D) - G40-18 (E) |
R - W-B | Output |
IG signal | Power switch on (ACC) → Power switch on (IG) |
1 V or less → 9 V or higher |
IG Relay Monitor (Outside) | |
G40-19 (SPD) - G40-18 (E) |
R - W-B | Input |
Vehicle speed signal |
Vehicle being driven at approx. 5 km/h (3 mph) |
Pulse generation (See waveform 2) |
Vehicle Speed Signal | |
G40-27 (ST2) - G40-18 (E) |
L - W-B | Output |
STSW signal | With
the brake pedal depressed, the power switch is pressed and held → After
approx. 3 sec. has elapsed, the power switch is released |
8.5 V or higher → 1 V or less |
- | | G40-8 (CLG5) - G40-18 (E) |
B - W-B | Output |
Output to No. 1 indoor electrical key antenna assembly (front floor) |
Procedure:
- Power switch off
- Electrical key transmitter sub-assembly not inside vehicle
- Within 30 seconds of closing any door
| Pulse generation
(See waveform 3) | - | |
G40-9 (CG5B) - G40-18 (E) |
LG - W-B | Output |
Output
to No. 1 indoor electrical key antenna assembly (front floor) (terminal
on opposite side of component from CLG5 output terminal) |
Procedure:
- Power switch off
- Electrical key transmitter sub-assembly not inside vehicle
- Within 30 seconds of closing any door
| Pulse generation
(See waveform 3) | - | |
K10-5 (CLG6) - G40-18 (E) |
W - W-B | Output |
Output to No. 1 indoor electrical key antenna assembly (rear floor) |
Procedure:
- Power switch off
- Electrical key transmitter sub-assembly not inside vehicle
- Within 30 seconds of closing any door
| Pulse generation
(See waveform 3) | - | |
K10-6 (CG6B) - G40-18 (E) |
R - W-B | Output |
Output
to No. 1 indoor electrical key antenna assembly (rear floor) (terminal
on opposite side of component from CLG6 output terminal) |
Procedure:
- Power switch off
- Electrical key transmitter sub-assembly not inside vehicle
- Within 30 seconds of closing any door
| Pulse generation
(See waveform 3) | - | |
G40-5 (TXCT) - G40-11 (AGND) |
GR - BE | Output |
Signal output to transponder key amplifier |
Power switch off, brake pedal not depressed, 30 seconds or more after driver door opened and then closed |
Below 1 V |
- BCC Malfunction
- Abnormal Status
- Different Encrypt Code
- Different Serial Number
- Frame Error
- Response
| | G40-6 (CODE) - G40-11 (AGND) |
B - BE | Input |
Signal input from transponder key amplifier |
Power switch off, brake pedal not depressed, 30 seconds or more after driver door opened and then closed |
Below 1 V | |
G40-7 (VC5) - G40-11 (AGND) |
BE - BE | Output |
Transponder key amplifier power supply |
Power switch off, brake pedal not depressed, 30 seconds or more after driver door opened and then closed |
Below 1 V | |
G40-11 (AGND) - Body ground |
BE - Body ground | - |
Transponder key amplifier ground |
Always | Below 1 Ω | |
G40-5 (TXCT) - G40-11 (AGND) |
GR - BE | Output |
Signal output to transponder key amplifier (Code
sent from certification ECU (smart key ECU assembly) to transponder key
amplifier built into power switch, and then transmitted by transponder
key amplifier antenna as radio waves) |
Power switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds of power switch pressed |
Pulse generation (See waveform 4) |
- BCC Malfunction
- Abnormal Status
- Different Encrypt Code
- Different Serial Number
- Frame Error
- Response
| | G40-6 (CODE) - G40-11 (AGND) |
B - BE | Input |
Signal input from transponder key amplifier (Radio
waves from transponder key amplifier built into power switch used to
detect key information. Key information then sent to certification ECU
(smart key ECU assembly)) | Power switch off, power switch pressed with electrical key transmitter sub-assembly held near power switch
HINT: Remove the transmitter battery before performing this inspection. |
Pulse generation (See waveform 5) | |
G40-7 (VC5) - G40-11 (AGND) |
BE - BE | Output |
Transponder key amplifier power supply (Power
supplied from certification ECU (smart key ECU assembly) when
transponder key amplifier built into power switch activated) |
Power switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds of power switch pressed |
Pulse generation (See waveform 6) | |
A10-3 (EFII) - G40-18 (E) |
V - W-B | Input |
EFI communication input (Signal input from hybrid vehicle control ECU to certification ECU (smart key ECU assembly)) |
Power switch off | 11 to 14 V |
- EFI Code Receive
- Engine Start Request
| | A10-4 (EFIO) - G40-18 (E) |
GR - W-B | Output |
EFI communication output (Signal output from certification ECU (smart key ECU assembly) to hybrid vehicle control ECU) |
Power switch off | 11 to 14 V → 1 V or less | |
A10-3 (EFII) - G40-18 (E) |
V - W-B | Input |
EFI communication input (Signal input from hybrid vehicle control ECU to certification ECU (smart key ECU assembly)) |
Within
3 seconds of hybrid control system start or within 3 seconds of power
switch turned on (IG) after cable disconnected and reconnected to
auxiliary battery | Pulse generation
(See waveform 7) | |
A10-4 (EFIO) - G40-18 (E) |
GR - W-B | Output |
EFI communication output (Signal output from certification ECU (smart key ECU assembly) to hybrid vehicle control ECU) |
Power switch turned on (IG) using registered electrical key transmitter sub-assembly |
Pulse generation (See waveform 8) | |
G40-20 (IND) - G40-18 (E) |
W - W-B | Output |
Security indicator output |
Power switch off → on (IG) |
Pulse generation → Below 2 V |
- | | K10-7 (WCSW) - G40-18 (E)* |
LG - W-B | Output |
Wireless charger system stop signal |
Procedure:
- Power switch off
- Electrical key transmitter sub-assembly inside vehicle
- Power switch off → on (ACC)
| Below 1 V → 4.5 to 6 V
(For 1 second after power switch on (ACC)) |
- |
- *: w/ Wireless Charging System
HINT:
- The waveform of the steering lock actuator motor stopped can be checked without performing any particular operation.
- The waveform of the steering lock actuator motor operating can be checked if either of the following operations is performed:
- To unlock the steering, bring the electrical key transmitter
sub-assembly into the cabin and turn the power switch on (ACC) or on
(IG).
- To lock the steering, open a door with the power switch off and the shift lever in P.
(e) Using an oscilloscope, check the waveform of the ECU. NOTICE:
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
(1) Waveform 1 
|
*a | Steering lock motor not operating | |
*b | Steering lock motor operating | Measurement Condition |
Item | Content | |
Tester Connection | G40-25 (SLR+) - G40-18 (E) | |
Tool Setting | 2 V/DIV., 200 ms./DIV. | |
Condition | When a door is opened, the steering lock motor will be operated if all of the following conditions are met:
- The steering is unlocked.
- The power switch is off.
- The shift lever is in P.
| (2) Waveform 2
 Measurement Condition |
Item | Content | |
Tester Connection | G40-19 (SPD) - G40-18 (E) | |
Tool Setting | 5 V/DIV., 20 ms./DIV. | |
Condition | Vehicle being driven at approx. 5 km/h (3 mph) |
HINT: The wavelength becomes shorter as the vehicle speed increases.
(3) Waveform 3 
|
*a | For 30 seconds after any door closed | |
*b | After 30 seconds or more have elapsed since any door closed | Measurement Condition |
Item | Content | |
Tester Connection | G40-8 (CLG5) - G40-18 (E)
G40-9 (CG5B) - G40-18 (E) K10-5 (CLG6) - G40-18 (E) K10-6 (CG6B) - G40-18 (E) | |
Tool Setting | 2 V/DIV., 500 ms/DIV. | |
Condition | Procedure:
- Power switch off
- Electrical key transmitter sub-assembly not inside vehicle
- Within 30 seconds of closing any door
| (4) Waveform 4
 Measurement Condition |
Item | Content | |
Tester Connection | G40-5 (TXCT) - G40-11 (AGND) | |
Tool Setting | 2 V/DIV., 20 ms./DIV. | |
Condition | Power switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds of power switch pressed |
(5) Waveform 5 
|
*a | Waveform | |
*b | Waveform (detail) | Measurement Condition |
Item | Content | |
Tester Connection | G40-6 (CODE) - G40-11 (AGND) | |
Tool Setting |
- Waveform
1 V/DIV., 20 ms./DIV.
- Waveform (detail)
2 V/DIV., 100 μs./DIV.
| | Condition |
Power switch off, power switch pressed with electrical key transmitter sub-assembly held near power switch* |
HINT: *: Remove the transmitter battery before performing this inspection.
(6) Waveform 6  Measurement Condition |
Item | Content | |
Tester Connection | G40-7 (VC5) - G40-11 (AGND) | |
Tool Setting | 2 V/DIV., 200 ms./DIV. | |
Condition | Power switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds of power switch pressed |
(7) Waveform 7 
|
*a | Approximately 160 ms. |
*b | Approximately 270 ms. | Measurement Condition |
Item | Content | |
Tester Connection | A10-3 (EFII) - G40-18 (E) | |
Tool Setting | 2 V/DIV., 500 ms./DIV. | |
Condition | Within
3 seconds of hybrid control system start or within 3 seconds of power
switch turned on (IG) after cable disconnected and reconnected to
auxiliary battery | (8) Waveform 8
|
*a | Approximately 160 ms. |
*b | Approximately 270 ms. | Measurement Condition |
Item | Content | |
Tester Connection | A10-4 (EFIO) - G40-18 (E) | |
Tool Setting | 2 V/DIV., 500 ms./DIV. | |
Condition | Power switch turned on (IG) using registered electrical key transmitter sub-assembly |
CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)
 (a) Disconnect the G43 steering lock ECU (steering lock actuator or upper bracket assembly) connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.
HINT: Measure the values on the wire harness side with the connector disconnected. |
Terminal No. (Symbol) | Wiring Color |
Input / Output | Terminal Description |
Condition | Specified Condition |
Related Data List Item/DTC | |
G43-1 (GND) - Body ground |
W-B - Body ground | - |
Ground | Always |
Below 1 Ω | - | |
G43-6 (IG2) - G43-1 (GND) |
LG - W-B |
Input | IG signal (IG2 power supply input for steering lock motor) |
Power switch off | Below 1 V |
- | | Power switch on (IG) |
11 to 14 V | |
G43-7 (B) - Body ground |
W - Body ground | Input |
Constant power supply |
Power switch off | 11 to 14 V |
- | (c) Connect the G43 steering lock ECU (steering lock actuator or upper bracket assembly) connector.
(d) Measure the voltage, and check for pulses according to the value(s) in the table below. |
Terminal No. (Symbol) | Wiring Color |
Input / Output | Terminal Description |
Condition | Specified Condition |
Related Data List Item/DTC | |
G43-3 (IGE) - G43-1 (GND) |
W - W-B | Input |
Steering
lock motor operation permission signal (motor operation permission
signal supplied by certification ECU (smart key ECU assembly)) |
Steering lock motor operating when all conditions met, and then door opened:
- Shift lever in P
- Steering unlocked
- Power switch turned off
| Pulse generation
(See waveform 1) |
- Power Supply Short
- Unlock Request Receive
- Lock Request Receive
| | G43-4 (SLP1) - G43-1 (GND) |
BE - W-B | Output |
Steering lock bar position signal (signal output from steering unlock sensor) |
Steering locked → unlocked |
11 to 14 V → Below 1.5 V |
Sensor Value | |
G43-5 (LIN) - G43-1 (GND) |
B - W-B | Input / Output |
LIN communication line |
Power switch on (IG) |
Pulse generation | Steering Lock Start Cond |
HINT:
- There is 1 motor and 2 sensors built into the steering lock actuator or upper bracket assembly.
- When taking measurements when the lock motor is stopped, it is not necessary to perform any operations.
- In order to take measurements when the lock motor is operating, perform either of the following operations:
- To unlock the steering, carry the key and turn the power switch on (ACC) or on (IG).
- To lock the steering, turn the power switch off with the shift lever in P, and then open a door.
(e) Using an oscilloscope, check the waveform. NOTICE: The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
(1) Waveform 1 (Reference) 
|
*a | Steering lock motor not operating | |
*b | Steering lock motor operating | Measurement Condition |
Item | Content | |
Tester Connection | G43-3 (IGE) - G43-1 (GND) | |
Tool Setting | 2 V/DIV., 200 ms./DIV. | |
Condition | Steering lock motor operating when all conditions met, and then door opened:
- Shift lever in P
- Steering unlocked
- Power switch turned off
|
 CHECK HYBRID VEHICLE CONTROL ECU
(a) Measure the voltage and resistance, and check for pulses according to the value(s) in the table below. |
Terminal No. (Symbol) | Wiring Color |
Input / Output | Terminal Description |
Condition | Specified Condition |
Related Data List Item/DTC | |
A23-3 (IG2) - G46-6 (E1) |
B - W-B | Input |
Ignition power supply |
Power switch on (IG) |
11 to 14 V | - | |
G46-6 (E1) - Body ground |
W-B - Body ground | - |
Ground | Always |
Below 1 Ω | - | |
G47-23 (IMO) - G46-6 (E1) |
BE - W-B | Output |
EFI communication output (Signal output from hybrid vehicle control ECU to certification ECU (smart key ECU assembly)) |
Power switch off | 11 to 14 V |
- EFI Code Receive
- Engine Start Request
| | G47-23 (IMO) - G46-6 (E1) |
BE - W-B | Output |
EFI communication output (Signal output from hybrid vehicle control ECU to certification ECU (smart key ECU assembly)) |
Within
3 seconds of hybrid control system start or within 3 seconds of power
switch turned on (IG) after cable disconnected and reconnected to
auxiliary battery | Pulse generation
(See waveform 1) | |
G47-22 (IMI) - G46-6 (E1) |
G - W-B | Input |
EFI communication input (Signal input from certification ECU (smart key ECU assembly) to hybrid vehicle control ECU) |
Power switch off | 11 to 14 V → 1 V or less | |
G47-22 (IMI) - G46-6 (E1) |
G - W-B | Input |
EFI communication input (Signal input from certification ECU (smart key ECU assembly) to hybrid vehicle control ECU) |
Within
3 seconds of hybrid control system start or within 3 seconds of power
switch turned on (IG) after cable disconnected and reconnected to
auxiliary battery | Pulse generation
(See waveform 2) | (b) Using an oscilloscope, check the waveform.
NOTICE: The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
(1) Waveform 1 (Reference) 
|
*a | Approximately 160 ms. |
*b | Approximately 270 ms. | Measurement Condition |
Item | Content | |
Tester Connection | G47-23 (IMO) - G46-6 (E1) | |
Tool Setting | 2 V/DIV., 500 ms./DIV. | |
Condition | Within
3 seconds of hybrid control system start or within 3 seconds of power
switch turned on (IG) after cable disconnected and reconnected to
auxiliary battery | (2) Waveform 2 (Reference)
|
*a | Approximately 160 ms. |
*b | Approximately 270 ms. | Measurement Condition |
Item | Content | |
Tester Connection | G47-22 (IMI) - G46-6 (E1) | |
Tool Setting | 2 V/DIV., 500 ms./DIV. | |
Condition | Within
3 seconds of hybrid control system start or within 3 seconds of power
switch turned on (IG) after cable disconnected and reconnected to
auxiliary battery | CHECK POWER SWITCH
 (a) Measure the voltage and resistance according to the value(s) in the table below. |
Terminal No. (Symbol) | Wiring Color |
Input / Output | Terminal Description |
Condition | Specified Condition |
Related Data List Item/DTC | |
G117-6 (AGND) - Body ground |
BE - Body ground | - |
Transponder key amplifier ground |
Always | Below 1 Ω |
- | | G117-7 (TXCT) - G117-6 (AGND) |
GR - BE | Input |
Immobiliser communication input |
Power switch off, brake pedal not depressed, 30 seconds or more after driver door opened and then closed |
Below 1 V | - | |
G117-8 (CODE) - G117-6 (AGND) |
B - BE | Output |
Immobiliser communication output |
Power switch off, brake pedal not depressed, 30 seconds or more after driver door opened and then closed |
Below 1 V | - | |
G117-10 (VC5) - G117-6 (AGND) |
BE - BE | Input |
Transponder key amplifier power supply |
Power switch off, brake pedal not depressed, 30 seconds or more after driver door opened and then closed |
Below 1 V | - |
(b) Check for pulses according to the value(s) in the table below. |
Terminal No. (Symbol) | Wiring Color |
Input / Output | Terminal Description |
Condition | Specified Condition |
Related Data List Item/DTC | |
G117-7 (TXCT) - G117-6 (AGND) |
GR - BE | Input |
Signal input from certification ECU (smart key ECU assembly) (Code
sent from certification ECU (smart key ECU assembly) to transponder key
amplifier built into power switch, and then transmitted by transponder
key amplifier antenna as radio waves) |
Power switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds of power switch pressed |
Pulse generation (See waveform 1) |
| | G117-8 (CODE) - G117-6 (AGND) |
B - BE | Output |
Signal output to certification ECU (smart key ECU assembly) (Radio
waves from transponder key amplifier built into power switch used to
detect key information. Key information then sent to certification ECU
(smart key ECU assembly)) | Power switch off, power switch pressed with electrical key transmitter sub-assembly held near power switch* |
Pulse generation (See waveform 2) | |
G117-10 (VC5) - G117-6 (AGND) |
BE - BE | Input |
Transponder key amplifier power supply (Power
supplied from certification ECU (smart key ECU assembly) when
transponder key amplifier built into power switch activated) |
Power switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds of power switch pressed |
Pulse generation (See waveform 3) |
HINT: *: Remove the transmitter battery before performing this inspection.
(c) Using an oscilloscope, check the waveform. NOTICE: The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
(1) Waveform 1 (Reference)  Measurement Condition |
Item | Content | |
Tester Connection | G117-7 (TXCT) - G117-6 (AGND) | |
Tool Setting | 2 V/DIV., 20 ms./DIV. | |
Condition | Power switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds of power switch pressed |
(2) Waveform 2 (Reference)
|
*a | Waveform | |
*b | Waveform (detail) | Measurement Condition |
Item | Content | |
Tester Connection | G117-8 (CODE) - G117-6 (AGND) | |
Tool Setting |
- Waveform
1 V/DIV., 20 ms./DIV.
- Waveform (detail)
2 V/DIV., 100 μs./DIV.
| | Condition |
Power switch off, power switch pressed with electrical key transmitter sub-assembly held near power switch* |
HINT: *: Remove the transmitter battery before performing this inspection.
(3) Waveform 3 (Reference)
 Measurement Condition |
Item | Content | |
Tester Connection | G117-10 (VC5) - G117-6 (AGND) | |
Tool Setting | 2 V/DIV., 200 ms./DIV. | |
Condition | Power switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds of power switch pressed | |
