Problem Symptoms Table
Use the table below to help determine the cause of a problem. The likely causes of the problem are indicated in descending order. Check each suspected area in order. Repair or replace faulty parts or perform adjustments as necessary.
NOTE:
When replacing any of the brake actuator assembly or sensors, etc., turn the ignition switch off.
HINT:
- Inspect the fuses and relays before investigating the suspected areas shown in the table below.
- Inspect each suspected area in order for the corresponding symptom.
VEHICLE STABILITY CONTROL SYSTEM:
| Symptom | 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 | |
| Check the brake actuator assembly with 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 | |
| Stop light switch circuit (Open or short malfunction) | Refer to DTC C1425: Open in Stop Light Switch Circuit | |
| Stop light switch circuit (Off stuck malfunction) | Refer to DTC C1426: Stop Light Switch OFF Stuck Malfunction | |
| Check the brake actuator assembly with 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 TRAC 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 | |
| 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 C1243: Acceleration Sensor Stuck Malfunction; DTC C1245: Acceleration Sensor Output Malfunction | |
| Yaw rate and acceleration sensor circuit (Continuous invalidation malfunction) | Refer to DTC C1442: Invalid Data Received from Acceleration Sensor; DTC C1443: Invalid Data Received from Yaw Rate Sensor | |
| Yaw rate and acceleration sensor circuit (Internal malfunction) | Refer to DTC C1419: 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 | |
| TRAC OFF indicator light abnormal (Remains on) | TRAC OFF indicator light circuit | Refer to TRAC OFF Indicator Light Remains ON |
| Brake actuator assembly (Skid control ECU) | Refer to REMOVAL | |
| TRAC OFF indicator light abnormal (Does not come on) | TRAC OFF indicator light 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 | |
| Downhill assist control indicator light abnormal (Remains on) (*1) | Downhill assist control switch circuit | Refer to DTC C1379: Downhill Assist Control Switch Malfunction (Test Mode DTC) |
| Downhill assist control indicator light circuit | Refer to Downhill Assist Control Indicator Light Remains ON | |
| Brake actuator assembly (Skid control ECU) | Refer to REMOVAL | |
| Downhill assist control indicator light abnormal (Does not come on) (*1) | Downhill assist control switch circuit | Refer to DTC C1379: Downhill Assist Control Switch Malfunction (Test Mode DTC) |
| Downhill assist control indicator light circuit | Refer to Downhill Assist Control 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 | |
| Meter buzzer abnormal | Meter buzzer circuit | Refer to HOW TO PROCEED WITH TROUBLESHOOTING |
| Brake actuator assembly (Skid control ECU) | Refer to REMOVAL |
(*1): for 4WD