Problem Symptoms Table
If there are no DTCs output and the problem still occurs, check the circuits for each problem symptom in the order given in the following table and proceed to the relevant troubleshooting information.
NOTE:
When replacing the brake actuator assembly, sensors, etc., turn the engine switch off.
HINT:
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
VEHICLE STABILITY CONTROL SYSTEM
| Symptom 77 |
Suspected Area | See |
|---|---|---|
| ABS, BA and/or EBD does not operate | Check for DTCs again and make sure that the normal system code is output. | Refer to DTC CHECK / CLEAR |
| IG power source circuit (Low power supply voltage malfunction) | Refer to DTC C1241: Low Power Supply Voltage Malfunction | |
| IG power source circuit (High power supply voltage malfunction) | Refer to DTC C1417: High Power Supply Voltage Malfunction | |
| Front speed sensor circuit (Output malfunction) | Refer to DTC C1413: Front Speed Sensor RH Output Malfunction; DTC C1414: Front Speed Sensor LH Output Malfunction | |
| Rear speed sensor circuit (Output malfunction) | Refer to DTC C1415: Rear Speed Sensor RH Output Malfunction; DTC C1416: Rear Speed Sensor LH Output Malfunction | |
| Front speed sensor circuit (Open or short malfunction) | Refer to DTC C1405: Open or Short in Front Speed Sensor RH Circuit; DTC C1406: Open or Short in Front Speed Sensor LH Circuit | |
| Rear speed sensor circuit (Open or short malfunction) | Refer to DTC C1407: Open or Short in Rear Speed Sensor RH Circuit; DTC C1408: Open or Short in Rear Speed Sensor LH Circuit | |
| Front speed sensor circuit (Comparison malfunction) | Refer to DTC C1401: Front Speed Sensor RH Malfunction; DTC C1402: Front Speed Sensor LH Malfunction | |
| Rear speed sensor circuit (Comparison malfunction) | Refer to DTC C1403: Rear Speed Sensor RH Malfunction; DTC C1404: Rear Speed Sensor LH Malfunction | |
| Front speed sensor circuit (Performance malfunction) | Refer to DTC C1409: Front Speed Sensor RH Performance; DTC C1410: Front Speed Sensor LH Performance | |
| Rear speed sensor circuit (Performance malfunction) | Refer to DTC C1411: Rear Speed Sensor RH Performance; DTC C1412: Rear Speed Sensor LH Performance | |
| Check the brake actuator assembly using the Techstream. (Check brake actuator assembly operation using the Active Test function.) If abnormal, check the hydraulic circuit for leaks. | Refer to ON-VEHICLE INSPECTION | |
| If the symptom still occurs even after the circuits listed above have been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU). | Refer to REMOVAL | |
| ABS, BA and/or EBD does not operate efficiently | Check for DTCs again and make sure that the normal system code is output. | Refer to DTC CHECK / CLEAR |
| Front speed sensor circuit (Output malfunction) | Refer to DTC C1413: Front Speed Sensor RH Output Malfunction; DTC C1414: Front Speed Sensor LH Output Malfunction | |
| Rear speed sensor circuit (Output malfunction) | Refer to DTC C1415: Rear Speed Sensor RH Output Malfunction; DTC C1416: Rear Speed Sensor LH Output Malfunction | |
| Front speed sensor circuit (Open or short malfunction) | Refer to DTC C1405: Open or Short in Front Speed Sensor RH Circuit; DTC C1406: Open or Short in Front Speed Sensor LH Circuit | |
| Rear speed sensor circuit (Open or short malfunction) | Refer to DTC C1407: Open or Short in Rear Speed Sensor RH Circuit; DTC C1408: Open or Short in Rear Speed Sensor LH Circuit | |
| Front speed sensor circuit (Comparison malfunction) | Refer to DTC C1401: Front Speed Sensor RH Malfunction; DTC C1402: Front Speed Sensor LH Malfunction | |
| Rear speed sensor circuit (Comparison malfunction) | Refer to DTC C1403: Rear Speed Sensor RH Malfunction; DTC C1404: Rear Speed Sensor LH Malfunction | |
| Front speed sensor circuit (Performance malfunction) | Refer to DTC C1409: Front Speed Sensor RH Performance; DTC C1410: Front Speed Sensor LH Performance | |
| Rear speed sensor circuit (Performance malfunction) | Refer to DTC C1411: Rear Speed Sensor RH Performance; DTC C1412: Rear Speed Sensor LH Performance | |
| Stop light switch circuit (Open or short malfunction) | Refer to DTC C1425: Open in Stop Light Switch Circuit | |
| Stop light switch circuit (Stuck off malfunction) | Refer to DTC C1426: Stop Light Switch OFF Stuck Malfunction | |
| Check the brake actuator assembly using the Techstream. (Check brake actuator assembly operation using the Active Test function.) If abnormal, check the hydraulic circuit for leaks. | Refer to ON-VEHICLE INSPECTION | |
| If the symptom still occurs even after the circuits listed above have been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU). | Refer to REMOVAL | |
| ABS sensor DTC check cannot be done | Check for DTCs again and make sure that the normal system code is output. | Refer to DTC CHECK / CLEAR |
| TC and CG terminal circuit | Refer to TC and CG Terminal Circuit | |
| If the symptom still occurs even after the circuits listed above have been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU). | Refer to REMOVAL | |
| ABS warning light abnormal (Remains on) | ABS warning light circuit | Refer to ABS Warning Light Remains ON |
| Brake actuator assembly (Skid control ECU) | Refer to REMOVAL | |
| ABS warning light abnormal (Does not come on) | ABS warning light circuit | Refer to ABS Warning Light does not Come ON |
| Brake actuator assembly (Skid control ECU) | Refer to REMOVAL | |
| Brake warning light abnormal (Remains on) | Brake warning light circuit | Refer to Brake Warning Light Remains ON |
| Brake actuator assembly (Skid control ECU) | Refer to REMOVAL | |
| Brake warning light abnormal (Does not come on) | Brake warning light circuit | Refer to Brake Warning Light does not Come ON |
| Brake actuator assembly (Skid control ECU) | Refer to REMOVAL | |
| VSC and/or TR(A)C does not operate | Check for DTCs again and make sure that the normal system code is output. | Refer to DTC CHECK / CLEAR |
| IG power source circuit (Low power supply voltage malfunction) | Refer to DTC C1241: Low Power Supply Voltage Malfunction | |
| IG power source circuit (High power supply voltage malfunction) | Refer to DTC C1417: High Power Supply Voltage Malfunction | |
| Check the hydraulic circuit for leaks. | - | |
| Front speed sensor circuit (Output malfunction) | Refer to DTC C1413: Front Speed Sensor RH Output Malfunction; DTC C1414: Front Speed Sensor LH Output Malfunction | |
| Rear speed sensor circuit (Output malfunction) | Refer to DTC C1415: Rear Speed Sensor RH Output Malfunction; DTC C1416: Rear Speed Sensor LH Output Malfunction | |
| Front speed sensor circuit (Open or short malfunction) | Refer to DTC C1405: Open or Short in Front Speed Sensor RH Circuit; DTC C1406: Open or Short in Front Speed Sensor LH Circuit | |
| Rear speed sensor circuit (Open or short malfunction) | Refer to DTC C1407: Open or Short in Rear Speed Sensor RH Circuit; DTC C1408: Open or Short in Rear Speed Sensor LH Circuit | |
| Front speed sensor circuit (Comparison malfunction) | Refer to DTC C1401: Front Speed Sensor RH Malfunction; DTC C1402: Front Speed Sensor LH Malfunction | |
| Rear speed sensor circuit (Comparison malfunction) | Refer to DTC C1403: Rear Speed Sensor RH Malfunction; DTC C1404: Rear Speed Sensor LH Malfunction | |
| Front speed sensor circuit (Performance malfunction) | Refer to DTC C1409: Front Speed Sensor RH Performance; DTC C1410: Front Speed Sensor LH Performance | |
| Rear speed sensor circuit (Performance malfunction) | Refer to DTC C1411: Rear Speed Sensor RH Performance; DTC C1412: Rear Speed Sensor LH Performance | |
| Yaw rate and acceleration sensor circuit (Zero point malfunction) | Refer to DTC C1210: Zero Point Calibration of Yaw Rate Sensor Undone; DTC C1336: Zero Point Calibration of Acceleration Sensor Undone | |
| Yaw rate and acceleration sensor circuit (Power supply malfunction) | Refer to DTC C1381: Acceleration Sensor Power Supply Voltage Malfunction | |
| Acceleration sensor circuit (Comparison malfunction) | Refer to DTC C1420: Acceleration Sensor Malfunction | |
| Yaw rate sensor circuit (Comparison malfunction) | Refer to DTC C1436: Yaw Rate Sensor Malfunction | |
| Yaw rate and acceleration sensor circuit (Stuck or output malfunction) | Refer to DTC C1232 Acceleration Sensor Stuck Malfunction; DTC C1233 Acceleration Sensor Stuck Malfunction; DTC C1225 Acceleration Sensor Output Malfunction | |
| Yaw rate and acceleration sensor circuit (Continuous invalidation malfunction) | Refer to DTC C1232 Invalid Data Received from Acceleration Sensor; DTC C1233 Invalid Data Received from Yaw Rate Sensor | |
| Yaw rate and acceleration sensor circuit (Internal malfunction) | Refer to DTC C0711 Acceleration Sensor Internal Circuit; DTC C1435: Yaw Rate Sensor Internal Circuit | |
| Steering angle sensor circuit (Zero point malfunction) | Refer to DTC C1290: Steering Angle Sensor Zero Point Malfunction | |
| Steering angle sensor circuit (Zero point initialization or calibration malfunction) | Refer to DTC C1439: Steering Angle Sensor Initialization Incomplete; DTC C1445: Vehicle Driven with Steering Angle Sensor not Initialized | |
| Steering angle sensor circuit (Power supply malfunction) | Refer to DTC C1432: Steering Angle Sensor Power Source Voltage Malfunction | |
| Steering angle sensor circuit (Output malfunction) | Refer to DTC C1434: Steering Angle Sensor Output Malfunction | |
| Steering angle sensor circuit (Internal malfunction) | Refer to DTC C1433: Steering Angle Sensor Internal Circuit | |
| If the symptom still occurs even after the circuits listed above have been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU). | Refer to REMOVAL | |
| VSC sensor DTC check cannot be done | Check for DTCs again and make sure that the normal system code is output. | Refer to DTC CHECK / CLEAR |
| TC and CG terminal circuit | Refer to TC and CG Terminal Circuit | |
| If the symptom still occurs even after the circuits listed above have been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU). | Refer to REMOVAL | |
| VSC OFF indicator light abnormal (Remains on) | VSC OFF indicator light circuit | Refer to VSC OFF Indicator Light Remains ON |
| Brake actuator assembly (Skid control ECU) | Refer to REMOVAL | |
| VSC OFF indicator light abnormal (Does not come on) | VSC OFF indicator light circuit | Refer to VSC OFF Indicator Light does not Come ON |
| Brake actuator assembly (Skid control ECU) | Refer to REMOVAL | |
| Multi-information display (TR(A)C OFF indicator) abnormal (Remains on) | Multi-information display (TR(A)C OFF indicator) circuit | Refer to TRAC OFF Indicator Light Remains ON |
| Brake actuator assembly (Skid control ECU) | Refer to REMOVAL | |
| Multi-information display (TR(A)C OFF indicator) abnormal (Does not come on) | Multi-information display (TR(A)C OFF indicator) circuit | Refer to TRAC OFF Indicator Light does not Come ON |
| Brake actuator assembly (Skid control ECU) | Refer to REMOVAL | |
| Slip indicator light abnormal (Remains on) | Slip indicator light circuit | Refer to Slip Indicator Light Remains ON |
| Brake actuator assembly (Skid control ECU) | Refer to REMOVAL | |
| Slip indicator light abnormal (Does not come on) | Slip indicator light circuit | Refer to Slip Indicator Light does not Come ON |
| Brake actuator assembly (Skid control ECU) | Refer to REMOVAL | |
| Sensor check cannot be done | TS and CG terminal circuit | Refer to TS and CG Terminal Circuit |
| Brake actuator assembly (Skid control ECU) | Refer to REMOVAL |