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 the brake actuator assembly, sensor, etc., turn the ignition switch off.
HINT:
- Inspect the fuse and relay before investigating the suspected areas as shown in the table below.
- Inspect each suspected area in order for the corresponding symptom.
VEHICLE STABILITY CONTROL SYSTEM:
| Symptom | Suspected Area | Refer to |
|---|---|---|
| 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 | Refer to DTC C1241/41: Low Battery Positive Voltage or Abnormally High Battery Positive Voltage | |
| Front speed sensor circuit | Refer to DTC C0200/31: Front Speed Sensor RH Circuit; DTC C0205/32: Front Speed Sensor LH Circuit; DTC C1271/71: Low Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1272/72: Low Output Signal of Front Speed Sensor LH (Test Mode DTC) | |
| Rear speed sensor circuit | Refer to DTC C0210/33: Rear Speed Sensor RH Circuit; DTC C0215/34: Rear Speed Sensor LH Circuit; DTC C1273/73: Low Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1274/74: Low Output Signal of Rear Speed Sensor LH (Test Mode DTC) | |
| Check the brake actuator assembly with 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 symptoms still occur even after the above circuits in suspected areas 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 | Refer to DTC C0200/31: Front Speed Sensor RH Circuit; DTC C0205/32: Front Speed Sensor LH Circuit; DTC C1271/71: Low Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1272/72: Low Output Signal of Front Speed Sensor LH (Test Mode DTC) | |
| Rear speed sensor circuit | Refer to DTC C0210/33: Rear Speed Sensor RH Circuit; DTC C0215/34: Rear Speed Sensor LH Circuit; DTC C1273/73: Low Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1274/74: Low Output Signal of Rear Speed Sensor LH (Test Mode DTC) | |
| Stop light switch circuit | Refer to DTC C1249/49: Open in Stop Light Switch Circuit | |
| Check the brake actuator assembly with 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 symptoms still occur even after the above circuits in suspected areas 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 symptoms still occur even after the above circuit in the suspected area has 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 | Refer to DTC C1241/41: Low Battery Positive Voltage or Abnormally High Battery Positive Voltage | |
| Check the hydraulic circuit for leaks. | - | |
| Front speed sensor circuit | Refer to DTC C0200/31: Front Speed Sensor RH Circuit; DTC C0205/32: Front Speed Sensor LH Circuit; DTC C1271/71: Low Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1272/72: Low Output Signal of Front Speed Sensor LH (Test Mode DTC) | |
| Rear speed sensor circuit | Refer to DTC C0210/33: Rear Speed Sensor RH Circuit; DTC C0215/34: Rear Speed Sensor LH Circuit; DTC C1273/73: Low Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1274/74: Low Output Signal of Rear Speed Sensor LH (Test Mode DTC) | |
| Yaw rate and acceleration sensor circuit | Refer to DTC C1232/32: Stuck in Acceleration Sensor; DTC C0371/71: Yaw Rate Sensor (Test Mode DTC); DTC C1234/34: Yaw Rate Sensor Malfunction; DTC C1243/43: Acceleration Sensor Stuck Malfunction; DTC C1244/44: Open or Short in Acceleration Sensor Circuit; DTC C1245/45: Acceleration Sensor Output Malfunction; DTC C1279/79: Acceleration Sensor Output Voltage Malfunction (Test Mode DTC); DTC C1381/97: Acceleration Sensor Power Supply Voltage Malfunction | |
| Steering angle sensor circuit | Refer to DTC C1231/31: Steering Angle Sensor Circuit Malfunction | |
| If the symptoms still occur even after the above circuits in suspected areas 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 symptoms still occur even after the above circuit in suspected areas has been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU). | Refer to REMOVAL | |
| TRAC OFF indicator 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 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 | |
| VSC OFF indicator 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 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 | |
| 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 | |
| Skid control buzzer abnormal | Skid control buzzer circuit | Refer to Skid Control Buzzer Circuit |
| Brake actuator assembly (Skid control ECU) | Refer to REMOVAL |