VEHICLE STABILITY CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE CHART
Note
Turn the ignition switch off before removing parts.
Tech Tips
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If no abnormality is found when inspecting parts, inspect the skid control ECU and ground points for poor contact.
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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.
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When 2 or more DTCs are detected, perform circuit inspection one by one until the problem is identified.
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Inspect the fuse and relay before investigating the trouble areas as shown in the table below.
| DTC Code | Detection Item | Trouble Area | See page |
|---|---|---|---|
| C0226 | SFR Solenoid Circuit | - Solenoid circuit - Brake actuator assembly |
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| C0236 | SFL Solenoid Circuit | - Solenoid circuit - Brake actuator assembly |
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| C0246 | SRR Solenoid Circuit | - Solenoid circuit - Brake actuator assembly |
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| C0256 | SRL Solenoid Circuit | - Solenoid circuit - Brake actuator assembly |
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| C0273*1 | Open in ABS Motor Relay Circuit | - ABS No.1 fuse - ABS motor relay circuit - Brake actuator assembly (ABS motor relay) |
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| C0274 | Short in ABS Motor Relay Circuit | - ABS motor relay circuit - Brake actuator assembly (ABS motor relay) |
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| C0278 | Open in ABS Solenoid Relay Circuit | - ABS No.2 fuse - ABS solenoid relay circuit - Brake actuator assembly (ABS solenoid relay) |
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| C0279 | Short in ABS Solenoid Relay Circuit | - ABS solenoid relay circuit - Brake actuator assembly (ABS solenoid relay) |
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| C1225 | SM Solenoid Circuit | - SM1 or SM2 circuit - Brake actuator assembly |
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| C1240 | Yaw Rate Sensor Discrimination | Yaw rate and acceleration sensor | |
| C1241 | Low Power Supply Voltage Malfunction | - ECU-IG No.1 fuse - Battery - Charging system - Power source circuit - Internal power supply circuit of the skid control ECU |
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| C1243*1 | Acceleration Sensor Stuck Malfunction | - Yaw rate and acceleration sensor - Yaw rate and acceleration sensor circuit |
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| C1245*1 | Acceleration Sensor Output Malfunction | - Yaw rate and acceleration sensor - Yaw rate and acceleration sensor circuit - Sensor installation |
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| C1361 | Short in ABS Motor Fail Safe Relay Circuit | - ABS No.1 fuse - ABS motor fail safe relay circuit - Brake actuator assembly (ABS motor fail safe relay) |
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| C1381 | Acceleration Sensor Power Supply Voltage Malfunction | - Yaw rate and acceleration sensor - Yaw rate and acceleration sensor power source circuit |
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| C1401*1 | Front Speed Sensor RH Malfunction | - Front speed sensor RH - Speed sensor rotor - Sensor installation |
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| C1402*1 | Front Speed Sensor LH Malfunction | - Front speed sensor LH - Speed sensor rotor - Sensor installation |
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| C1403*1 | Rear Speed Sensor RH Malfunction | - Rear speed sensor RH - Speed sensor rotor |
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| C1404*1 | Rear Speed Sensor LH Malfunction | - Rear speed sensor LH - Speed sensor rotor |
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| C1405*1 | Open or Short in Front Speed Sensor RH Circuit | - Front speed sensor RH - Speed sensor circuit - Brake actuator assembly (Skid control ECU) |
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| C1406*1 | Open or Short in Front Speed Sensor LH Circuit | - Front speed sensor LH - Speed sensor circuit - Brake actuator assembly (Skid control ECU) |
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| C1407*1 | Open or Short in Rear Speed Sensor RH Circuit | - Rear speed sensor RH - Speed sensor wire - Speed sensor circuit - Brake actuator assembly (Skid control ECU) |
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| C1408*1 | Open or Short in Rear Speed Sensor LH Circuit | - Rear speed sensor LH - Speed sensor wire - Speed sensor circuit - Brake actuator assembly (Skid control ECU) |
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| C1413*1 | Front Speed Sensor RH Output Malfunction | - Front speed sensor RH - Speed sensor circuit - Speed sensor rotor - Brake actuator assembly (Skid control ECU) |
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| C1414*1 | Front Speed Sensor LH Output Malfunction | - Front speed sensor LH - Speed sensor circuit - Speed sensor rotor - Brake actuator assembly (Skid control ECU) |
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| C1415*1 | Rear Speed Sensor RH Output Malfunction | - Rear speed sensor RH - Speed sensor circuit - Speed sensor rotor - Brake actuator assembly (Skid control ECU) |
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| C1416*1 | Rear Speed Sensor LH Output Malfunction | - Rear speed sensor LH - Speed sensor circuit - Speed sensor rotor - Brake actuator assembly (Skid control ECU) |
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| C1417 | High Power Supply Voltage Malfunction | - ECU-IG NO. 1 fuse - Battery - Charging system - Power source circuit - Internal power supply circuit of the skid control ECU |
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| C1419 | Acceleration Sensor Internal Circuit | Yaw rate and acceleration sensor | |
| C1420 | Acceleration Sensor Malfunction | - Sensor installation - Yaw rate and acceleration sensor |
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| 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 | - Stop light switch - Stop light switch circuit - Master cylinder pressure sensor circuit - Brake actuator assembly (Master cylinder pressure sensor) |
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| 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 | Open in Stop Light Switch Circuit | - STOP fuse - Stop light switch - Stop light switch circuit - Brake actuator assembly (Skid control ECU) |
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| C1427*1 | Motor Malfunction | - Brake actuator assembly (Ground circuit) - Brake actuator assembly (Motor circuit) |
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| C1428*1 | Motor Circuit Malfunction | Brake actuator assembly (Motor circuit) | |
| 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, *2:
Even after the trouble areas are repaired, the ABS warning light will not go off unless the following operations are performed:
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*1:
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Drive the vehicle at 20 km/h (12 mph) for 30 seconds or more and check that the ABS warning light goes off.
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Clear the DTC.
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*2:
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Keep the vehicle stationary for 5 seconds or more and depress the brake pedal lightly 2 or 3 times.
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Drive the vehicle at a vehicle speed of 50 km/h (31 mph) and keep depressing the brake pedal strongly for approximately 3 seconds.
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Repeat the above operation 3 times or more and check that the ABS warning light goes off.
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Clear the DTC.
Tech Tips
In some cases, the tester cannot be used when the ABS warning light remains on.
| DTC Code | Detection Item | Trouble Area | See page |
|---|---|---|---|
| 43 | ABS Control System Malfunction | ABS control system | |
| 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 - Brake actuator assembly (Skid control ECU) |
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| C1232 | Acceleration Sensor Stuck Malfunction | - Yaw rate and acceleration sensor - Yaw rate and acceleration sensor circuit |
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| C1290 | Steering Angle Sensor Zero Point Malfunction | - Yaw rate and acceleration sensor zero point calibration incomplete - Poor adjustment of the centered position of the steering wheel - Poor adjustment of front wheel alignment |
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| C1336 | Zero Point Calibration of Acceleration Sensor Undone | - Yaw rate and acceleration sensor - Brake actuator assembly (Skid control ECU) |
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| C1432 | Steering Angle Sensor Power Source Voltage Malfunction | - Steering angle sensor power supply - Steering angle sensor (built in to the spiral cable) |
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| C1433 | Steering Angle Sensor Internal Circuit | Steering angle sensor (built in to the spiral cable) | |
| C1434 | Steering Angle Sensor Output Malfunction | - Steering angle sensor power supply - Steering angle sensor (built in to the spiral cable) - Brake actuator assembly (Skid control ECU) |
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| 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 | - CAN communication system (Skid control ECU to ECM) - Brake actuator assembly (Skid control ECU) |
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| 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 tester cannot be used when the VSC OFF indicator light remains on.
| DTC Code | Detection Item | Trouble Area | See page |
|---|---|---|---|
| C1271 | Low Output Signal of Front Speed Sensor RH (Test Mode DTC) | - Front speed sensor RH - Speed sensor rotor - Sensor installation |
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| C1272 | Low Output Signal of Front Speed Sensor LH (Test Mode DTC) | - Front speed sensor LH - Speed sensor rotor - Sensor installation |
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| C1273 | Low Output Signal of Rear Speed Sensor RH (Test Mode DTC) | - Rear speed sensor RH - Speed sensor rotor |
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| C1274 | Low Output Signal of Rear Speed Sensor LH (Test Mode DTC) | - Rear speed sensor LH - Speed sensor rotor |
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| C1275 | Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC) | - Front speed sensor RH - Speed sensor rotor |
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| C1276 | Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC) | - Front speed sensor LH - Speed sensor rotor |
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| C1277 | Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC) | - Rear speed sensor RH - Speed sensor rotor |
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| C1278 | Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC) | - Rear speed sensor LH - Speed sensor rotor |
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| C1279 | Acceleration Sensor Output Voltage Malfunction (Test Mode DTC) | - Yaw rate and acceleration sensor - Sensor installation |
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| C1281 | Master Cylinder Pressure Sensor Output Malfunction (Test Mode DTC) | Brake actuator assembly (Master cylinder pressure sensor) |
| DTC Code | Detection Item | Trouble Area | See page |
|---|---|---|---|
| C0371 | Yaw Rate Sensor (Test Mode DTC) | Yaw rate and acceleration sensor |