TERMINALS OF ECU
Note. This service information describes the standard CAN values for all CAN related components.
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- CHECK JUNCTION CONNECTOR CAN Junction Connector Center WIRING COLOR Junction Connector A side Color (CANH Side) Color (CANL Side) DLC3 (K86) W B WIRING COLOR Junction Connector B side Color (CANH Side) Color (CANL Side) Hybrid vehicle control ECU (K83) W B Network gateway ECU (K84) W B Distance control ECU (K85)* W B Clearance warning ECU (K88) W B CAN junction connector RR (K87) W B HINT: The connectors connected to the junction connector can be distinguished by the colors of the bus lines and the connecting side of the connector. The connectors can be connected to any terminals on the same side. *: w/ Dynamic radar cruise control system CAN Junction Connector RR Junction Connector Wiring Color Connect to CANH (V37-9) W CAN junction connector center CANL (V37-11) B CAN junction connector center CANH (V37-8) W ECM CANL (V37-10) B ECM CANH (V37-15) W CAN junction connector RH CANL (V37-19) B CAN junction connector RH CANH (V38-3) W Seat belt control ECU CANL (V38-1) B Seat belt control ECU CANH (V38-21) W Rear active stabilizer control ECU* CANL (V38-12) B Rear active stabilizer control ECU* CANH (V38-20) W CAN junction connector LH CANL (V38-14) B CAN junction connector LH HINT: *: w/ Active stabilizer suspension system CAN Junction Connector LH WIRING COLOR Junction Connector A side Color (CANH Side) Color (CANL Side) Hybrid vehicle control ECU (K3) W B ECM (K4) W B Skid control ECU (K2) W B WIRING COLOR Junction Connector B side Color (CANH Side) Color (CANL Side) Steering angle sensor (K8) W B Yaw rate sensor (K6) W B CAN junction connector RR (K7) W B CAN Junction Connector RH WIRING COLOR Junction Connector A side Color (CANH Side) Color (CANL Side) Steering control ECU (K75) W B WIRING COLOR Junction Connector B side Color (CANH Side) Color (CANL Side) CAN junction connector RR (K81) W B Power steering ECU (K80) W B Front active stabilizer control ECU (K79)* W B Absorber control ECU (K76) W B HINT: The connectors connected to the junction connector can be distinguished by the colors of the bus lines and the connecting side of the connector. The connectors can be connected to any terminals on the same side. *: w/ Active stabilizer suspension system
- CHECK TERMINALS OF CONNECTORS FOR JUNCTION CONNECTOR (CAN JUNCTION CONNECTOR CENTER, CAN JUNCTION CONNECTOR RH, CAN JUNCTION CONNECTOR LH) Terminal Terminal Symbol 1 CANH 2 CANL
- CHECK DLC3 Measure the resistance of the connector. Standard resistance Symbols (Terminal No.) Wiring Color Condition Specified Condition CANH (K16-6) - CANL (K16-14) W - B Power switch OFF 54 to 69 ohms CANH (K16-6) - CG (K16-4) W - W-B Power switch OFF 200 ohms or more CANL (K16-14) - CG (K16-4) B - W-B Power switch OFF 200 ohms or more CANH (K16-6) - BAT (K16-16) W - O Power switch OFF 6 kohms or more CANL (K16-14) - BAT (K16-16) B - O Power switch OFF 6 kohms or more
- CHECK HYBRID VEHICLE CONTROL ECU Disconnect the A54 and E84 ECU connectors. Measure the resistance of the wire harness side connector. Standard resistance Symbols (Terminal No.) Wiring Color Condition Specified Condition CANH (A54-43) - CANL (A54-42) W - B Power switch OFF 108 to 132 ohms CANH (A54-43) - E1 (A54-18) W - W-B Power switch OFF 200 ohms or more CANL (A54-42) - E1 (A54-18) B - W-B Power switch OFF 200 ohms or more CANH (A54-43) - BATT (A54-20) W - L Disconnect negative battery terminal 6 kohms or more CANL (A54-42) - BATT (A54-20) B - L Disconnect negative battery terminal 6 kohms or more CAN+ (A54-45) - CAN- (A54-44) W - B Power switch OFF 108 to 132 ohms CAN+ (A54-45) - E1 (A54-18) W - W-B Power switch OFF 200 ohms or more CAN- (A54-44) - E1 (A54-18) B - W-B Power switch OFF 200 ohms or more CAN+ (A54-45) - BATT (A54-20) W - L Disconnect negative battery terminal 6 kohms or more CAN- (A54-44) - BATT (A54-20) B - L Disconnect negative battery terminal 6 kohms or more
- CHECK DISTANCE CONTROL ECU HINT: For vehicles with dynamic radar cruise control system Disconnect the K13 ECU connector. Measure the resistance of the wire harness side connectors. Standard resistance Symbols (Terminal No.) Wiring Color Condition Specified Condition CANH (K13-8) - CANL (K13-9) W - B Power switch OFF 54 to 69 ohms CANH (K13-8) - GND (K13-12) W - G Power switch OFF 200 ohms or more CANL (K13-9) - GND (K13-12) B - G Power switch OFF 200 ohms or more CANH (K13-8) - BAT (K16-16) W - O Disconnect negative battery terminal 6 kohms or more CANL (K13-9) - BAT (K16-16) B - O Disconnect negative battery terminal 6 kohms or more
- CHECK SEAT BELT CONTROL ECU Disconnect the ECU connectors. Measure the resistance of the wire harness side connector. Standard resistance Symbols (Terminal No.) Wiring Color Condition Specified Condition CANH (V43-1) - CANL (V43-2) W - B Power switch OFF 54 to 69 ohms CANH (V43-1) - PGND (V31-8) W - W-B Power switch OFF 200 ohms or more CANL (V43-2) - PGND (V31-8) B - W-B Power switch OFF 200 ohms or more CANH (V43-1) - +B (V31-7) W - L Disconnect negative battery terminal 6 kohms or more CANL (V43-2) - +B (V31-7) B - L Disconnect negative battery terminal 6 kohms or more
- CHECK CLEARANCE WARNING ECU Disconnect the A38 ECU connector. Measure the resistance of the wire harness side connectors. Standard resistance Symbols (Terminal No.) Wiring Color Condition Specified Condition R1 (A38-23) - R2 (A38-24) W - B Power switch OFF 54 to 69 ohms R1 (A38-23) - E (A38-27) W - W-B Power switch OFF 200 ohms or more R2 (A38-24) - E (A38-27) B - W-B Power switch OFF 200 ohms or more R1 (A38-23) - BAT (K16-16) W - O Disconnect negative battery terminal 6 kohms or more R2 (A38-24) - BAT (K16-16) B - O Disconnect negative battery terminal 6 kohms or more
- CHECK NETWORK GATEWAY ECU Disconnect the K66 ECU connector. Measure the resistance of the wire harness side connector. Standard resistance Symbols (Terminal No.) Wiring Color Condition Specified Condition CA1H (K66-17) - CA1L (K66-18) W - B Power switch OFF 54 to 69 ohms CA1H (K66-17) - GND (K66-24) W - W-B Power switch OFF 200 ohms or more CA1L (K66-18) - GND (K66-24) B - W-B Power switch OFF 200 ohms or more CA1H (K66-17) - BATT (K66-10) W - G Disconnect negative battery terminal 6 kohms or more CA1L (K66-18) - BATT (K66-10) B - G Disconnect negative battery terminal 6 kohms or more
- CHECK ECM Disconnect the A53 and E83 ECM connectors. Measure the resistance of the wire harness side connector. Standard resistance Symbols (Terminal No.) Wiring Color Condition Specified Condition CANH (A53-52) - CANL (A53-33) W - B Power switch OFF 108 to 132 ohms CANH (A53-52) - EC (A53-32) W - W-B Power switch OFF 200 ohms or more CANL (A53-33) - EC (A53-32) B - W-B Power switch OFF 200 ohms or more CANH (A53-52) - BATT (A53-20) W - L Disconnect negative battery terminal 6 kohms or more CANL (A53-33) - BATT (A53-20) B - L Disconnect negative battery terminal 6 kohms or more CAN+ (A53-22) - CAN- (A53-21) W - B Power switch OFF 54 to 69 ohms CAN+ (A53-22) - EC (A53-32) W - W-B Power switch OFF 200 ohms or more CAN- (A53-21) - EC (A53-32) B - W-B Power switch OFF 200 ohms or more CAN+ (A53-22) - BATT (A53-20) W - L Disconnect negative battery terminal 6 kohms or more CAN- (A53-21) - BATT (A53-20) B - L Disconnect negative battery terminal 6 kohms or more
- CHECK SKID CONTROL ECU Disconnect the A13 and A15 ECU connectors. Measure the resistance of the wire harness side connectors. Standard resistance Symbols (Terminal No.) Wiring Color Condition Specified Condition CANH (A15-9) - CANL (A15-22) W - B Power switch OFF 54 to 69 ohms CANH (A15-9) - GND (A13-1) W - W-B Power switch OFF 200 ohms or more CANL (A15-22) - GND (A13-1) B - W-B Power switch OFF 200 ohms or more CANH (A15-9) - +B (A13-29) W - G-R Disconnect negative battery terminal 6 kohms or more CANL (A15-22) - +B (A13-29) B - G-R Disconnect negative battery terminal 6 kohms or more
- CHECK STEERING ANGLE SENSOR Disconnect the K19 sensor connector. Measure the resistance of the wire harness side connector. Standard resistance Symbols (Terminal No.) Wiring Color Condition Specified Condition CANH (K19-10) - CANL (K19-9) W - B Power switch OFF 54 to 69 ohms CANH (K19-10) - ESS (K19-2) W - W-B Power switch OFF 200 ohms or more CANL (K19-9) - ESS (K19-2) B - W-B Power switch OFF 200 ohms or more CANH (K19-10) - BAT (K19-3) W - LG Disconnect negative battery terminal 6 kohms or more CANL (K19-9) - BAT (K19-3) B - LG Disconnect negative battery terminal 6 kohms or more
- CHECK YAW RATE SENSOR Disconnect the K35 sensor connector. Measure the resistance of the wire harness side connectors. Standard resistance Symbols (Terminal No.) Wiring Color Condition Specified Condition CANH (K35-3) - CANL (K35-2) W - B Power switch OFF 54 to 69 ohms CANH (K35-3) - GND (K35-1) W - W-B Power switch OFF 200 ohms or more CANL (K35-2) - GND (K35-1) B - W-B Power switch OFF 200 ohms or more CANH (K35-3) - BAT (K16-16) W - O Disconnect negative battery terminal 6 kohms or more CANL (K35-2) - BAT (K16-16) B - O Disconnect negative battery terminal 6 kohms or more
- CHECK POWER STEERING ECU Disconnect the A23 ECU connector. Measure the resistance of the wire harness side connector. Standard resistance Symbols (Terminal No.) Wiring Color Condition Specified Condition CANH (A23-2) - CANL (A23-3) W - B Power switch OFF 54 to 69 ohms CANH (A23-2) - PGND (A23-5) W - B Power switch OFF 200 ohms or more CANL (A23-3) - PGND (A23-5) B - B Power switch OFF 200 ohms or more CANH (A23-2) - IG (A23-9) W - B-Y Disconnect negative battery terminal 6 kohms or more CANL (A23-3) - IG (A23-9) B - B-Y Disconnect negative battery terminal 6 kohms or more
- CHECK STEERING CONTROL ECU Disconnect the A40 and K70 ECU connectors. Measure the resistance of the wire harness side connectors. Standard resistance Symbols (Terminal No.) Wiring Color Condition Specified Condition CANH (K70-9) - CANL (K70-20) W - B Power switch OFF 54 to 69 ohms CANH (K70-9) - PGND (A40-7) W - W-B Power switch OFF 200 ohms or more CANL (K70-20) - PGND (A40-7) B - W-B Power switch OFF 200 ohms or more CANH (K70-9) - PIG (A40-8) W - R Disconnect negative battery terminal 6 kohms or more CANL (K70-20) - PIG (A40-8) B - R Disconnect negative battery terminal 6 kohms or more
- CHECK ABSORBER CONTROL ECU Disconnect the K72 ECU connector. Measure the resistance of the wire harness side connector. Standard resistance Symbols (Terminal No.) Wiring Color Condition Specified Condition CANH (K72-7) - CANL (K72-8) W - B Power switch OFF 54 to 69 ohms CANH (K72-7) - GND (K72-4) W - W-B Power switch OFF 200 ohms or more CANL (K72-8) - GND (K72-4) B - W-B Power switch OFF 200 ohms or more CANH (K72-7) - BAT (K16-16) W - O Disconnect negative battery terminal 6 kohms or more CANL (K72-8) - BAT (K16-16) B - O Disconnect negative battery terminal 6 kohms or more
- CHECK FRONT ACTIVE STABILIZER CONTROL ECU HINT: For vehicles with active stabilizer suspension system only. Disconnect the A58 ECU connector. Measure the resistance of the wire harness side connectors. Standard resistance Symbols (Terminal No.) Wiring Color Condition Specified Condition CANH (A58-2) - CANL (A58-3) W - B Power switch OFF 54 to 69 ohms CANH (A58-2) - PGND (A58-5) W - B Power switch OFF 200 ohms or more CANL (A58-3) - PGND (A58-5) B - B Power switch OFF 200 ohms or more CANH (A58-2) - BAT (K16-16) W - O Disconnect negative battery terminal 6 kohms or more CANL (A58-3) - BAT (K16-16) B - O Disconnect negative battery terminal 6 kohms or more
- CHECK REAR ACTIVE STABILIZER CONTROL ECU HINT: For vehicles with Active stabilizer suspension system only. Disconnect the y1 ECU connector. Measure the resistance of the wire harness side connectors. Standard resistance Symbols (Terminal No.) Wiring Color Condition Specified Condition CANH (y1-2) - CANL (y1-3) B - W Power switch OFF 54 to 69 ohms CANH (y1-2) - PGND (y1-5) B - W Power switch OFF 200 ohms or more CANL (y1-3) - PGND (y1-5) W - W Power switch OFF 200 ohms or more CANH (y1-2) - BAT (K16-16) B - O Disconnect negative battery terminal 6 kohms or more CANL (y1-3) - BAT (K16-16) W - O Disconnect negative battery terminal 6 kohms or more
FAIL-SAFE CHART
- FAIL-SAFE FUNCTION When communication fails in any of the CAN bus lines (communication line) due to a short circuit or other causes, the fail-safe function, which is specified for each system, operates to prevent the system from malfunctioning. Effects on each system when communication is impossible. (For further details, refer to each system.) System Function / Control ECM Hybrid Vehicle Control ECU Skid Control ECU Steering Angle Sensor Yaw Rate Sensor Power Steering ECU Distance Control ECU Behavior during communication stop Driver-based diagnostic detection Regenerative cooperation demand control A B Regenerative brake control prohibition Indicator displays "HV-Caution" Vehicle torque control processing based on VDIM A B VDIM control prohibition Indicator displays "HV-Caution" ABS operation control B A ABS operation control prohibition Indicator displays "HV-Caution" Inclination judgment control Sliding prevention function is performed B A Even on level road, inclination judgment control is performed Indicator displays "HV-Caution" HV-ENG cooperative control Based on power demand from hybrid vehicle control ECU, engine controls electronic throttle A B Vehicle motivity deteriorates or MIL illuminates MIL illuminates Airbag control Collision judgment is performed A No noticeable change Indicator displays "HV-Caution" Electric heater operation control Electric heater operation prohibition demand A No noticeable change None in particular Engine ON control Engine ON timing is divided by ventilation system A Engine control is performed regardless of ventilation condition Indicator displays "HV-Caution" VSC control VSC or TRC engine output control is used B A B B VSC function stops Possible (light illuminates) VDM-β control Steering cooperative control A B B B VDM-β function stops Possible (light illumination malfunctions) Dynamic radar cruise Maintains constant distance between vehicles A B B B A Dynamic radar cruise control does not operate Possible (light illuminates) PCS and AVS control When PCS is operating, AVS damping force becomes stiff B B B A Control does not operate None Pre-collision During vehicle collision judgment, performs brake operation demand and seat belt tighten demand B A B B A Pre-collision does not operate Possible (light illuminates) AVS control Based on vehicle behavior data, optimizes damping force B B B Control stops Possible (non-operation) Electronic power steering Calculates assist current based on torque sensor value and vehicle speed, and outputs it to motor B B A While driving with hybrid system active, or until hybrid system activates while driving without hybrid system, power steering does not operate. Continuously controls vehicle with assist power equivalent to assist power when vehicle speed is 100 km/h (60 mph) Possible (light illuminates) Obstacle position detection Performs contact avoidance judgment based on steering operation B Informs of obstacle in detection range Clearance warning indicator (clearance sonar sensor main switch) and handle guide mark blink VGRS control Controls steering gear ratio based on vehicle speed B B B B VGRS function stops Possible (smart warning light illumination malfunctions) Active stabilizer control Front and rear roll control B B B B Control stops Possible (displays of multi-information display) HINT: A: Control master B: Multiplex signal transmission System Function / Control Absorber Control ECU Seat Belt Control ECU Clearance Warning ECU Active Stabilizer Control ECU Steering Control ECU HV with Built-in Gateway Network Gateway ECU Behavior during communication stop Driver-based diagnostic detection Regenerative cooperation demand control Regenerative brake control prohibition Indicator displays "HV-Caution" Vehicle torque control processing based on VDIM VDIM control prohibition Indicator displays "HV-Caution" ABS operation control ABS operation control prohibition Indicator displays "HV-Caution" Inclination judgment control Sliding prevention function is performed Even on level road, inclination judgment control is performed Indicator displays "HV-Caution" HV-ENG cooperative control Based on power demand from hybrid vehicle control ECU, engine controls electronic throttle Vehicle motivity deteriorates or MIL illuminates MIL illuminates Airbag control Collision judgment is performed C No noticeable change Indicator displays "HV-Caution" Electric heater operation control Electric heater operation prohibition demand C No noticeable change None in particular Engine ON control Engine ON timing is divided by ventilation system C Engine control is performed regardless of ventilation condition Indicator displays "HV-Caution" VSC control VSC or TRC engine output control is used VSC function stops Possible (light illuminates) VDM-β control Steering cooperative control B VDM-β function stops Possible (light illumination malfunctions) Dynamic Radar cruise Maintains constant distance between vehicles B C C Dynamic radar cruise control does not operate Possible (light illuminates) PCS and AVS control When PCS is operating, AVS damping force becomes stiff B C C Control does not operate None Pre-collision During vehicle collision judgment, performs brake operation demand and seat belt tighten demand A C Pre-collision does not operate Possible (light illuminates) AVS control Based on vehicle behavior data, optimizes damping force A B C Control stops Possible (non-operation) Electronic power steering Calculates assist current based on torque sensor value and vehicle speed, and outputs it to motor While driving with hybrid system active, or until hybrid system activates while driving without hybrid system, power steering does not operate. Continuously controls vehicle with assist power equivalent to assist power when vehicle speed is 100 km/h (60 mph) Possible (light illuminates) Obstacle position detection Performs contact avoidance judgment based on steering operation A B Informs of obstacle in detection range Clearance warning indicator (clearance sonar sensor main switch) and handle guide mark blink VGRS control Controls steering gear ratio based on vehicle speed A VGRS function stops Possible (smart warning light illumination malfunctions) Active stabilizer control Front and rear roll control A B C Control stops Possible (displays of multi-information display) HINT: A: Control master B: Multiplex signal transmission C: Gateway function