Note
Turn the ignition switch off before removing any parts.
Tech Tips
If no abnormality is found when inspecting parts, inspect the skid control ECU and ground points for poor connections.
If a trouble code is displayed during the DTC check, check the circuit indicated by the DTC. For details of each code, refer to the page for the respective "DTC Code" in the DTC chart.
When 2 or more DTCs are detected, perform circuit inspection one by one until the problem is identified.
For DTCs indicated by the warning light or indicator light, refer to the DTC charts in DTC Check/Clear.
Inspect the fuses and relays before inspecting the trouble areas as shown in the table below.
| DTC Code | Detection Item | Trouble Area | See page |
|---|---|---|---|
| C0226 | SFR Solenoid Circuit | 1. SFRR or SFRH circuit 2. Brake actuator assembly |
|
| C0236 | SFL Solenoid Circuit | 1. SFLR or SFLH circuit 2. Brake actuator assembly |
|
| C0246 | SRR Solenoid Circuit | 1. SRRR or SRRH circuit 2. Brake actuator assembly |
|
| C0256 | SRL Solenoid Circuit | 1. SRLR or SRLH circuit 2. Brake actuator assembly |
|
| C0273 (*1) | Open in ABS Motor Relay Circuit | 1. Fusible link block (VSC NO. 1 fuse) 2. ABS motor relay circuit 3. Brake actuator assembly (ABS motor relay) |
|
| C0274 | Short in ABS Motor Relay Circuit | 1. ABS motor relay circuit 2. Brake actuator assembly (ABS motor relay) |
|
| C0278 | Open in ABS Solenoid Relay Circuit | 1. Fusible link block (VSC NO. 2 fuse) 2. ABS solenoid relay circuit 3. Brake actuator assembly (ABS solenoid relay) |
|
| C0279 | Short in ABS Solenoid Relay Circuit | 1. ABS solenoid relay circuit 2. Brake actuator assembly (ABS solenoid relay) |
|
| C1225 | SM Solenoid Circuit | 1. SM1 or SM2 circuit 2. Brake actuator assembly |
|
| C1241 | Low Power Supply Voltage Malfunction | 1. ECU-IG NO. 2 fuse 2. Battery 3. Charging system 4. Power source circuit 5. Internal power supply circuit of the skid control ECU |
|
| C1243 (*1) | Acceleration Sensor Stuck Malfunction | 1. Sensor installation 2. Yaw rate and acceleration sensor |
|
| C1245 (*1) | Acceleration Sensor Output Malfunction | 1. Sensor installation 2. Yaw rate and acceleration sensor |
|
| C1337 | Diameter of the Tire is not Uniform | 1. Tire and wheel size 2. Tire deformation 3. Speed sensor rotor 4. Speed sensor 5. Speed sensor circuit 6. Brake actuator assembly (Skid control ECU) |
|
| C1361 | Short in ABS Motor Fail Safe Relay Circuit | 1. Fusible link block (VSC NO. 1 fuse) 2. ABS motor fail safe relay circuit 3. Brake actuator assembly (ABS motor fail safe relay) |
|
| C1381 | Acceleration Sensor Power Supply Voltage Malfunction | 1. Yaw rate and acceleration sensor power source circuit 2. Yaw rate and acceleration sensor |
|
| C1401 (*1) | Front Speed Sensor RH Malfunction | 1. Front speed sensor RH 2. Speed sensor rotor |
|
| C1402 (*1) | Front Speed Sensor LH Malfunction | 1. Front speed sensor LH 2. Speed sensor rotor |
|
| C1403 (*1) | Rear Speed Sensor RH Malfunction | 1. Rear speed sensor RH 2. Speed sensor rotor |
|
| C1404 (*1) | Rear Speed Sensor LH Malfunction | 1. Rear speed sensor LH 2. Speed sensor rotor |
|
| C1405 (*1) | Open or Short in Front Speed Sensor RH Circuit | 1. Front speed sensor RH 2. Speed sensor circuit 3. Brake actuator assembly (Skid control ECU) |
|
| C1406 (*1) | Open or Short in Front Speed Sensor LH Circuit | 1. Front speed sensor LH 2. Speed sensor circuit 3. Brake actuator assembly (Skid control ECU) |
|
| C1407 (*1) | Open or Short in Rear Speed Sensor RH Circuit | 1. Rear speed sensor RH 2. Speed sensor circuit 3. Brake actuator assembly (Skid control ECU) |
|
| C1408 (*1) | Open or Short in Rear Speed Sensor LH Circuit | 1. Rear speed sensor LH 2. Speed sensor circuit 3. Brake actuator assembly (Skid control ECU) |
|
| C1413 (*1) | Front Speed Sensor RH Output Malfunction | 1. Front speed sensor RH 2. Speed sensor circuit 3. Speed sensor rotor 4. Brake actuator assembly (Skid control ECU) |
|
| C1414 (*1) | Front Speed Sensor LH Output Malfunction | 1. Front speed sensor LH 2. Speed sensor circuit 3. Speed sensor rotor 4. Brake actuator assembly (Skid control ECU) |
|
| C1415 (*1) | Rear Speed Sensor RH Output Malfunction | 1. Rear speed sensor RH 2. Speed sensor circuit 3. Speed sensor rotor 4. Brake actuator assembly (Skid control ECU) |
|
| C1416 (*1) | Rear Speed Sensor LH Output Malfunction | 1. Rear speed sensor LH 2. Speed sensor circuit 3. Speed sensor rotor 4. Brake actuator assembly (Skid control ECU) |
|
| C1417 | High Power Supply Voltage Malfunction | 1. ECU-IG NO. 2 fuse 2. Battery 3. Charging system 4. Power source circuit 5. Internal power supply circuit of the skid control ECU |
|
| C1419 | Acceleration Sensor Internal Circuit | Yaw rate and acceleration sensor | |
| C1420 | Acceleration Sensor Malfunction | 1. Sensor installation 2. Yaw rate and acceleration sensor |
|
| C1421 (*2) | Open or Short in Master Cylinder Pressure Sensor | Brake actuator assembly (Master cylinder pressure sensor) | |
| C1422 (*2) | Master Cylinder Pressure Sensor Zero Point High Malfunction | 1. Stop light switch 2. Stop light switch circuit 3. Master cylinder pressure sensor circuit 4. Brake actuator assembly (Master cylinder pressure sensor) |
|
| C1423 (*2) | Master Cylinder Pressure Sensor Zero Point Low Malfunction | Brake actuator assembly (Master cylinder pressure sensor) | |
| C1424 (*2) | Master Cylinder Pressure Sensor Output Malfunction | Brake actuator assembly (Master cylinder pressure sensor) | |
| C1425 (*3) | Open in Stop Light Switch Circuit | 1. STOP fuse 2. Stop light switch 3. Stop light switch circuit 4. Stop light control relay 5. Stop light control relay circuit 6. Brake actuator assembly (Skid control ECU) |
|
| C1426 | Stop Light Switch OFF Stuck Malfunction | 1. STOP fuse 2. Stop light switch 3. Stop light switch circuit 4. Stop light control relay 5. Stop light control relay circuit 6. Brake actuator assembly (Skid control ECU) |
|
| C1427 (*1) | Motor Malfunction | 1. Brake actuator assembly (Ground circuit) 2. Brake actuator assembly (Motor circuit) |
|
| C1428 (*1) | Motor Circuit Malfunction | Brake actuator assembly (Motor circuit) | |
| C1429 | Open or Short in Brake Pedal Load Sensing Switch | 1. Brake pedal load sensing switch 2. Brake pedal load sensing switch circuit 3. Brake actuator assembly (Skid control ECU) |
|
| C1430 | Brake Pedal Load Sensing Switch OFF Stuck Malfunction | 1. Brake pedal load sensing switch 2. Brake pedal load sensing switch circuit |
|
| C1431 | Brake Pedal Load Sensing Switch ON Stuck Malfunction | 1. Brake pedal load sensing switch 2. Brake pedal load sensing switch circuit |
|
| C1442 | Invalid Data Received from Acceleration Sensor | Yaw rate and acceleration sensor | |
| U0073 | Control Module Communication Bus OFF | CAN communication system | |
| U0124 | Lost Communication with Lateral Acceleration Sensor Module | CAN communication system (Skid control ECU to yaw rate and acceleration sensor) |
(*1 to *3):
Even after the trouble areas are repaired, the ABS warning light will not go off unless the following operations are performed:
(*1):
Drive the vehicle at 20 km/h (12 mph) for 30 seconds or more and check that the ABS warning light goes off.
Clear the DTCs.
(*2):
Turn the ignition switch on (IG).
Keep the vehicle stationary for 5 seconds or more and depress the brake pedal lightly 2 or 3 times.
Drive the vehicle at the vehicle speed of 50 km/h (31 mph) and depress and hold the brake pedal firmly for approximately 3 seconds.
Repeat the above operation 3 times or more and check that the ABS warning light goes off.
Clear the DTCs.
(*3):
Turn the ignition switch on (IG).
Depress the brake pedal.
Clear the DTCs.
Tech Tips
In some cases, the intelligent tester cannot be used when the ABS warning light remains on.
| DTC Code | Detection Item | Trouble Area | See page |
|---|---|---|---|
| C1201 | Engine Control System Malfunction | Engine control system | |
| C1203 | ECM Communication Circuit Malfunction | ECM | |
| C1210 | Zero Point Calibration of Yaw Rate Sensor Undone | Yaw rate and acceleration sensor | |
| C1232 | Acceleration Sensor Stuck Malfunction | 1. Sensor installation 2. Yaw rate and acceleration sensor |
|
| C1290 | Steering Angle Sensor Zero Point Malfunction | 1. Yaw rate and acceleration sensor zero point calibration incomplete 2. Poor adjustment of the center position of the steering wheel 3. Poor adjustment of front wheel alignment |
|
| C1336 | Zero Point Calibration of Acceleration Sensor Undone | Yaw rate and acceleration sensor | |
| C1380 | Stop Light Control Relay Malfunction | 1. Stop light switch 2. Stop light switch circuit 3. Stop light control relay 4. Stop light control relay circuit 5. Brake actuator assembly (Skid control ECU) |
|
| C1432 | Steering Angle Sensor Power Source Voltage Malfunction | 1. Steering angle sensor power supply 2. Steering angle sensor |
|
| C1433 | Steering Angle Sensor Internal Circuit | Steering angle sensor | |
| C1434 | Steering Angle Sensor Output Malfunction | 1. Steering angle sensor power supply 2. Steering angle sensor 3. Brake actuator assembly (Skid control ECU) |
|
| C1435 | Yaw Rate Sensor Internal Circuit | Yaw rate and acceleration sensor | |
| C1436 | Yaw Rate Sensor Malfunction | Yaw rate and acceleration sensor | |
| C1437 | Lost Communication with ECM | 1. CAN communication system (Skid control ECU to ECM) 2. Brake actuator assembly (Skid control ECU) |
|
| C1439 | Steering Angle Sensor Initialization Incomplete | 1. Steering angle sensor 2. Yaw rate and acceleration sensor 3. Brake actuator assembly (Skid control ECU) |
|
| C1440 | Unusual Bank Angle Detected | Yaw rate and acceleration sensor | |
| C1441 | Performance Decline of Brake Function | 1. Brake pedal load sensing switch 2. Brake booster assembly 3. Brake actuator assembly (Skid control ECU) |
|
| C1443 | Invalid Data Received from Yaw Rate Sensor | Yaw rate and acceleration sensor | |
| C1445 | Vehicle Driven with Steering Angle Sensor not Initialized | 1. Steering angle sensor 2. Yaw rate and acceleration sensor 3. Brake actuator assembly (Skid control ECU) |
|
| U0100 | Lost Communication with ECM / PCM | CAN communication system (Skid control ECU to ECM) | |
| U0123 | Lost Communication with Yaw Rate Sensor Module | CAN communication system (Skid control ECU to yaw rate and acceleration sensor) | |
| U0126 | Lost Communication with Steering Angle Sensor Module | CAN communication system (Skid control ECU to steering angle sensor) |
Tech Tips
In some cases, the intelligent tester cannot be used when the slip indicator light remains on.
| DTC Code | Detection Item | Trouble Area | See page |
|---|---|---|---|
| C1271 | Low Output Signal of Front Speed Sensor RH (Test Mode DTC) | 1. Front speed sensor RH 2. Sensor installation 3. Speed sensor rotor |
|
| C1272 | Low Output Signal of Front Speed Sensor LH (Test Mode DTC) | 1. Front speed sensor LH 2. Sensor installation 3. Speed sensor rotor |
|
| C1273 | Low Output Signal of Rear Speed Sensor RH (Test Mode DTC) | 1. Rear speed sensor RH 2. Sensor installation 3. Speed sensor rotor |
|
| C1274 | Low Output Signal of Rear Speed Sensor LH (Test Mode DTC) | 1. Rear speed sensor LH 2. Sensor installation 3. Speed sensor rotor |
|
| C1275 | Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC) | Speed sensor rotor | |
| C1276 | Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC) | Speed sensor rotor | |
| C1277 | Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC) | Speed sensor rotor | |
| C1278 | Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC) | Speed sensor rotor | |
| C1279 | Acceleration Sensor Output Voltage Malfunction (Test Mode DTC) | 1. Sensor installation 2. Yaw rate and acceleration sensor |
|
| C1281 | Master Cylinder Pressure Sensor Output Malfunction (Test Mode DTC) | 1. Stop light switch 2. Brake pedal load sensing switch 3. Master cylinder pressure sensor |
| DTC Code | Detection Item | Trouble Area | See page |
|---|---|---|---|
| C1379 (*4) | Downhill Assist Control Switch Malfunction (Test Mode DTC) | Downhill assist control switch |
(*4): for 4WD