Problem Symptoms Table
If a normal code is displayed during the DTC check but the problem still occurs, check the circuits for each problem symptom in the order given in the table below and proceed to the relevant troubleshooting article.
NOTE:
When replacing the skid control ECU, sensor or 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 normal system code displayed. | Refer to DTC CHECK / CLEAR |
| IG1 power source circuit | Refer to DTC C1241: Low Power Supply Voltage Malfunction | |
| IG2 power source circuit | Refer to DTC C1242: Open Circuit in IG1/IG2 Power Source Circuit | |
| Front speed sensor circuit | 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 | Refer to DTC C1407: Open or Short in Rear Speed Sensor RH Circuit; DTC C1408: Open or Short in Rear Speed Sensor LH Circuit | |
| Check hydraulic brake booster using Techstream (Check hydraulic brake booster operation using active test function) If abnormal, check hydraulic circuit for leakage. | Refer to ON-VEHICLE INSPECTION | |
| If symptoms still occur even after above circuits in suspected areas inspected and proved to be normal, replace master cylinder solenoid. | Refer to DISASSEMBLY - Step 8 | |
| ABS, BA and/or EBD does not operate efficiently | Check for DTCs again and make sure that normal system code displayed. | Refer to DTC CHECK / CLEAR |
| Front speed sensor circuit | 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 | Refer to DTC C1407: Open or Short in Rear Speed Sensor RH Circuit; DTC C1408: Open or Short in Rear Speed Sensor LH Circuit | |
| Stop light switch circuit | Refer to DTC C1425: Open in Stop Light Switch Circuit | |
| Check hydraulic brake booster using Techstream (Check hydraulic brake booster operation using active test function) If abnormal, check hydraulic circuit for leakage. | Refer to ON-VEHICLE INSPECTION | |
| If symptoms still occur even after above circuits in suspected areas inspected and proved to be normal, replace master cylinder solenoid. | Refer to DISASSEMBLY - Step 8 | |
| VSC and/or TRAC does not operate | Check for DTCs again and make sure that normal system code displayed. | Refer to DTC CHECK / CLEAR |
| IG1 power source circuit | Refer to DTC C1241: Low Power Supply Voltage Malfunction | |
| IG2 power source circuit | Refer to DTC C1242: Open Circuit in IG1/IG2 Power Source Circuit | |
| Front speed sensor circuit | 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 | Refer to DTC C1407: Open or Short in Rear Speed Sensor RH Circuit; DTC C1408: Open or Short in Rear Speed Sensor LH Circuit | |
| Yaw rate and deceleration sensor circuit | 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) | |
| Steering angle sensor circuit | Refer to DTC C1432: Steering Angle Sensor Power Source Voltage Malfunction | |
| Check hydraulic brake booster using Techstream (Check hydraulic brake booster operation using active test function) If abnormal, check hydraulic circuit for leakage. | Refer to ON-VEHICLE INSPECTION | |
| If symptoms still occur even after above circuits in suspected areas inspected and proved to be normal, replace master cylinder solenoid. | Refer to DISASSEMBLY - Step 8 | |
| AUTO LSD does not operate | Check for DTCs again and make sure that normal system code displayed. | Refer to DTC CHECK / CLEAR |
| Check hydraulic brake booster using Techstream (Check hydraulic brake booster operation using active test function) If abnormal, check hydraulic circuit for leakage. | Refer to ON-VEHICLE INSPECTION | |
| If symptoms still occur even after above circuits in suspected areas inspected and proved to be normal, replace master cylinder solenoid. | Refer to DISASSEMBLY - Step 8 | |
| A-TRAC does not operate | Check for DTCs again and make sure that normal system code displayed. | Refer to DTC CHECK / CLEAR |
| Check hydraulic brake booster using Techstream (Check hydraulic brake booster operation using active test function) If abnormal, check hydraulic circuit for leakage. | Refer to ON-VEHICLE INSPECTION | |
| If symptoms still occur even after above circuits in suspected areas inspected and proved to be normal, replace master cylinder solenoid. | Refer to DISASSEMBLY - Step 8 | |
| DTC check cannot be performed | Check for DTCs again and make sure that normal system code displayed. | Refer to DTC CHECK / CLEAR |
| TC and CG terminal circuit | Refer to TC and CG Terminal Circuit | |
| If symptoms still occur even after above circuits in suspected areas inspected and proved to be normal, replace master cylinder solenoid. | Refer to DISASSEMBLY - Step 8 | |
| Sensor signal check cannot be performed | TS and CG terminal circuit | Refer to TS and CG Terminal Circuit |
| If symptoms still occur even after above circuits in suspected areas inspected and proved to be normal, replace master cylinder solenoid. | Refer to DISASSEMBLY - Step 8 | |
| ABS warning light remains on | ABS warning light circuit | Refer to ABS Warning Light Remains ON |
| Master cylinder solenoid | Refer to DISASSEMBLY - Step 8 | |
| ABS warning light does not come on | ABS warning light circuit | Refer to ABS Warning Light does not Come ON |
| Master cylinder solenoid | Refer to DISASSEMBLY - Step 8 | |
| SLIP indicator light remains on | SLIP indicator light circuit | Refer to Slip Indicator Light Remains ON |
| Master cylinder solenoid | Refer to DISASSEMBLY - Step 8 | |
| SLIP indicator light does not come on | SLIP indicator light circuit | Refer to Slip Indicator Light does not Come ON |
| Master cylinder solenoid | Refer to DISASSEMBLY - Step 8 | |
| BRAKE warning light remains on | BRAKE warning light circuit | Refer to Brake Warning Light Remains ON |
| Master cylinder solenoid | Refer to DISASSEMBLY - Step 8 | |
| BRAKE warning light does not come on | BRAKE warning light circuit | Refer to Brake Warning Light does not Come ON |
| Master cylinder solenoid | Refer to DISASSEMBLY - Step 8 | |
| VSC OFF indicator light remains on | VSC OFF indicator light circuit | Refer to VSC OFF Indicator Light Remains ON |
| Master cylinder solenoid | Refer to DISASSEMBLY - Step 8 | |
| VSC OFF indicator light does not come on | VSC OFF indicator light circuit | Refer to VSC OFF Indicator Light does not Come ON |
| Master cylinder solenoid | Refer to DISASSEMBLY - Step 8 | |
| TRAC OFF indicator light remains on | TRAC OFF indicator light circuit | Refer to TRAC OFF Indicator Light Remains ON |
| Master cylinder solenoid | Refer to DISASSEMBLY - Step 8 | |
| TRAC OFF indicator light does not come on | TRAC OFF indicator light circuit | Refer to TRAC OFF Indicator Light does not Come ON |
| Master cylinder solenoid | Refer to DISASSEMBLY - Step 8 | |
| AUTO LSD indicator light remains on | AUTO LSD indicator light circuit | Refer to AUTO LSD Indicator Light Remains ON |
| Master cylinder solenoid | Refer to DISASSEMBLY - Step 8 | |
| AUTO LSD indicator light does not come on | AUTO LSD indicator light circuit | Refer to AUTO LSD Indicator Light does not Come ON |
| Master cylinder solenoid | Refer to DISASSEMBLY - Step 8 | |
| A-TRAC indicator light remains on | A-TRAC indicator light circuit | Refer to A-TRAC Indicator Light Remains ON |
| Master cylinder solenoid | Refer to DISASSEMBLY - Step 8 | |
| A-TRAC indicator light does not come on | A-TRAC indicator light circuit | Refer to A-TRAC Indicator Light does not Come ON |
| Master cylinder solenoid | Refer to DISASSEMBLY - Step 8 | |
| VSC buzzer abnormal | VSC buzzer circuit | Refer to VSC Buzzer Circuit |
| Master cylinder solenoid | Refer to DISASSEMBLY - Step 8 |