Problem Symptoms Table
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.
NOTE:
When replacing the skid control ECU (brake actuator assembly), sensor, etc., turn the ignition switch off.
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 (comparison malfunction) | Refer to DTC C1271: Low Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1272: Low Output Signal of Front Speed Sensor LH (Test Mode DTC); DTC C1401: Front Speed Sensor RH Malfunction; DTC C1402: Front Speed Sensor LH 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 | |
| Front speed sensor circuit (output malfunction) | Refer to DTC C1275: Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1276: Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC); DTC C1413: Front Speed Sensor RH Output Malfunction; DTC C1414: Front Speed Sensor LH Output Malfunction | |
| Rear speed sensor circuit (comparison malfunction) | Refer to DTC C1273: Low Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1274: Low Output Signal of Rear Speed Sensor LH (Test Mode DTC); DTC C1403: Rear Speed Sensor RH Malfunction; DTC C1404: Rear Speed Sensor LH Malfunction | |
| 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 | |
| Rear speed sensor circuit (output malfunction) | Refer to DTC C1277: Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1278: Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC); DTC C1415: Rear Speed Sensor RH Output Malfunction; DTC C1416: Rear Speed Sensor LH Output Malfunction | |
| Check the skid control ECU (brake actuator assembly) with the Techstream. (Check skid control ECU (brake actuator assembly) operation using the Active Test function.) If abnormal, check the hydraulic circuit for leaks. | Refer to ON-VEHICLE INSPECTION | |
| If the symptoms still occur even after the above circuits in suspected areas have been inspected and proved to be normal, replace the skid control ECU (brake actuator assembly). | 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 (comparison malfunction) | Refer to DTC C1271: Low Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1272: Low Output Signal of Front Speed Sensor LH (Test Mode DTC); DTC C1401: Front Speed Sensor RH Malfunction; DTC C1402: Front Speed Sensor LH 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 | |
| Front speed sensor circuit (output malfunction) | Refer to DTC C1275: Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1276: Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC); DTC C1413: Front Speed Sensor RH Output Malfunction; DTC C1414: Front Speed Sensor LH Output Malfunction | |
| Rear speed sensor circuit (comparison malfunction) | Refer to DTC C1273: Low Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1274: Low Output Signal of Rear Speed Sensor LH (Test Mode DTC); DTC C1403: Rear Speed Sensor RH Malfunction; DTC C1404: Rear Speed Sensor LH Malfunction | |
| 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 | |
| Rear speed sensor circuit (output malfunction) | Refer to DTC C1277: Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1278: Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC); DTC C1415: Rear Speed Sensor RH Output Malfunction; DTC C1416: Rear Speed Sensor LH Output Malfunction | |
| Stop light switch circuit | Refer to DTC C1425: Open in Stop Light Switch Circuit | |
| Check the skid control ECU (brake actuator assembly) with the Techstream. (Check skid control ECU (brake actuator assembly) operation using the Active Test function.) If abnormal, check the hydraulic circuit for leaks. | Refer to ON-VEHICLE INSPECTION | |
| If the symptoms still occur even after the above circuits in suspected areas have been inspected and proved to be normal, replace the skid control ECU (brake actuator assembly). | 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 symptoms still occur even after the above circuit in the suspected area has been inspected and proved to be normal, replace the skid control ECU (brake actuator assembly). | Refer to REMOVAL | |
| ABS warning light abnormal (Remains on) | ABS warning light circuit | Refer to ABS Warning Light Remains ON |
| Skid control ECU (brake actuator assembly) | Refer to REMOVAL | |
| ABS warning light abnormal (Does not come on) | ABS warning light circuit | Refer to ABS Warning Light does not Come ON |
| Skid control ECU (brake actuator assembly) | Refer to REMOVAL | |
| Brake warning light abnormal (Remains on) | Brake warning light circuit | Refer to Brake Warning Light Remains ON |
| Skid control ECU (brake actuator assembly) | Refer to REMOVAL | |
| Brake warning light abnormal (Does not come on) | Brake warning light circuit | Refer to Brake Warning Light does not Come ON |
| Skid control ECU (brake actuator assembly) | 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 (comparison malfunction) | Refer to DTC C1271: Low Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1272: Low Output Signal of Front Speed Sensor LH (Test Mode DTC); DTC C1401: Front Speed Sensor RH Malfunction; DTC C1402: Front Speed Sensor LH 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 | |
| Front speed sensor circuit (output malfunction) | Refer to DTC C1275: Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1276: Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC); DTC C1413: Front Speed Sensor RH Output Malfunction; DTC C1414: Front Speed Sensor LH Output Malfunction | |
| Rear speed sensor circuit (comparison malfunction) | Refer to DTC C1273: Low Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1274: Low Output Signal of Rear Speed Sensor LH (Test Mode DTC); DTC C1403: Rear Speed Sensor RH Malfunction; DTC C1404: Rear Speed Sensor LH Malfunction | |
| 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 | |
| Rear speed sensor circuit (output malfunction) | Refer to DTC C1277: Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1278: Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC); DTC C1415: Rear Speed Sensor RH Output Malfunction; DTC C1416: Rear Speed Sensor LH Output Malfunction | |
| Yaw rate and deceleration sensor (Airbag sensor assembly) 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 deceleration sensor (Airbag sensor assembly) circuit (power supply malfunction) | Refer to DTC C1381: Acceleration Sensor Power Supply Voltage Malfunction | |
| Deceleration sensor (Airbag sensor assembly) circuit (comparison malfunction) | Refer to DTC C1419: Acceleration Sensor Internal Circuit; DTC C1435: Yaw Rate Sensor Internal Circuit | |
| Yaw rate sensor (Airbag sensor assembly) circuit (comparison malfunction) | Refer to DTC C1436: Yaw Rate Sensor Malfunction | |
| Yaw rate and deceleration sensor (Airbag sensor assembly) 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; DTC C1279: Acceleration Sensor Output Voltage Malfunction (Test Mode DTC); DTC C1473: Yaw Rate Sensor (Test Mode DTC) | |
| Yaw rate and deceleration sensor (Airbag sensor assembly) circuit (internal malfunction) | Refer to DTC C1419: Acceleration Sensor Internal Circuit; DTC C1435: Yaw Rate Sensor Internal Circuit | |
| Steering angle sensor (spiral cable sub-assembly) circuit (zero point malfunction) | Refer to DTC C1290: Steering Angle Sensor Zero Point Malfunction | |
| Steering angle sensor (spiral cable sub-assembly) circuit (power supply malfunction) | Refer to DTC C1432: Steering Angle Sensor Power Source Voltage Malfunction | |
| Steering angle sensor (spiral cable sub-assembly) circuit (output malfunction) | Refer to DTC C1434: Steering Angle Sensor Output Malfunction | |
| Steering angle sensor (spiral cable sub-assembly) circuit (internal malfunction) | Refer to DTC C1433: Steering Angle Sensor Internal Circuit | |
| If the symptoms still occur even after the above circuits in suspected areas have been inspected and proved to be normal, replace the skid control ECU (brake actuator assembly). | 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 symptoms still occur even after the above circuit in suspected areas has been inspected and proved to be normal, replace the skid control ECU (brake actuator assembly). | Refer to REMOVAL | |
| TRAC OFF indicator abnormal (Remains on) | TRAC OFF indicator light circuit | Refer to TRAC OFF Indicator Light Remains ON |
| Skid control ECU (brake actuator assembly) | Refer to REMOVAL | |
| TRAC OFF indicator abnormal (Does not come on) | TRAC OFF indicator light circuit | Refer to TRAC OFF Indicator Light does not Come ON |
| Skid control ECU (brake actuator assembly) | Refer to REMOVAL | |
| VSC OFF indicator abnormal (Remains on) | VSC OFF indicator light circuit | Refer to VSC OFF Indicator Light Remains ON |
| Skid control ECU (brake actuator assembly) | Refer to REMOVAL | |
| VSC OFF indicator abnormal (Does not come on) | VSC OFF indicator light circuit | Refer to VSC OFF Indicator Light does not Come ON |
| Skid control ECU (brake actuator assembly) | Refer to REMOVAL | |
| SLIP indicator light abnormal (Remains on) | SLIP indicator light circuit | Refer to Slip Indicator Light Remains ON |
| Skid control ECU (brake actuator assembly) | Refer to REMOVAL | |
| SLIP indicator light abnormal (Does not come on) | SLIP indicator light circuit | Refer to Slip Indicator Light does not Come ON |
| Skid control ECU (brake actuator assembly) | Refer to REMOVAL | |
| Sensor check cannot be done | TS and CG terminal circuit | Refer to TS and CG Terminal Circuit |
| Skid control ECU (brake actuator assembly) | Refer to REMOVAL |