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 master cylinder or sensor, turn the engine 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 no DTC is output | Refer to DTC CHECK / CLEAR |
| IG power source circuit | Refer to DTC C1241: Low Power Supply Voltage Malfunction | |
| 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 | |
| Master cylinder pressure sensor (check master cylinder pressure sensor by performing test mode inspection) | Refer to TEST MODE PROCEDURE | |
| Check hydraulic brake booster with Techstream. If abnormal, check hydraulic circuit for leakage. | Refer to ON-VEHICLE INSPECTION | |
| If symptoms still occur even after above circuits in suspected areas are inspected and proved to be normal, replace master cylinder solenoid | Refer to DISASSEMBLY | |
| ABS, BA and/or EBD does not operate efficiently | Check for DTCs again and make sure that no DTC is output | 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 | |
| Master cylinder pressure sensor (check master cylinder pressure sensor by performing test mode inspection) | Refer to TEST MODE PROCEDURE | |
| Check hydraulic brake booster with Techstream. If abnormal, check hydraulic circuit for leakage. | Refer to ON-VEHICLE INSPECTION | |
| If symptoms still occur even after above circuits in suspected areas are inspected and proved to be normal, replace master cylinder solenoid | Refer to DISASSEMBLY | |
| VSC and/or TRAC does not operate | Check for DTCs again and make sure that no DTC is output | Refer to DTC CHECK / CLEAR |
| IG power source circuit | Refer to DTC C1241: Low Power Supply Voltage Malfunction | |
| 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 acceleration 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 | |
| If symptoms still occur even after above circuits in suspected areas are inspected and proved to be normal, replace master cylinder solenoid | Refer to DISASSEMBLY | |
| Sensor and switch signal check cannot be performed | TS and CG terminal circuit | Refer to TS and CG Terminal Circuit |
| Master cylinder solenoid (skid control ECU) | Refer to DISASSEMBLY | |
| DTC check cannot be performed | Check for DTCs again and make sure that no DTC is output | Refer to DTC CHECK / CLEAR |
| TC and CG terminal circuit | Refer to TC and CG Terminal Circuit | |
| IG power source circuit (high power supply voltage malfunction) | Refer to DTC C1417: High Power Supply Voltage Malfunction | |
| If the symptoms still occur even after the above circuits in suspected areas are inspected and proved to be normal, replace the master cylinder solenoid | Refer to DISASSEMBLY | |
| ABS warning light abnormal (Remains on) | ABS warning light circuit | Refer to ABS Warning Light Remains ON |
| IG power source circuit (high power supply voltage malfunction) | Refer to DTC C1417: High Power Supply Voltage Malfunction | |
| Master cylinder solenoid (skid control ECU) | Refer to DISASSEMBLY | |
| ABS warning light abnormal (Does not come on) | ABS warning light circuit | Refer to ABS Warning Light does not Come ON |
| Master cylinder solenoid (skid control ECU) | Refer to DISASSEMBLY | |
| BRAKE warning light abnormal (Remains on) | BRAKE warning light circuit | Refer to Brake Warning Light Remains ON |
| IG power source circuit (high power supply voltage malfunction) | Refer to DTC C1417: High Power Supply Voltage Malfunction | |
| Master cylinder solenoid (skid control ECU) | Refer to DISASSEMBLY | |
| BRAKE warning light abnormal (Does not come on) | BRAKE warning light circuit | Refer to Brake Warning Light does not Come ON |
| Master cylinder solenoid (skid control ECU) | Refer to DISASSEMBLY | |
| Slip indicator light abnormal (Remains on) | Slip indicator light circuit | Refer to Slip Indicator Light Remains ON |
| IG power source circuit (high power supply voltage malfunction) | Refer to DTC C1417: High Power Supply Voltage Malfunction | |
| Master cylinder solenoid (skid control ECU) | Refer to DISASSEMBLY | |
| Slip indicator light abnormal (Does not come on) | Slip indicator light circuit | Refer to Slip Indicator Light does not Come ON |
| Master cylinder solenoid (skid control ECU) | Refer to DISASSEMBLY | |
| VSC OFF indicator light abnormal (Remains on) | VSC OFF indicator light circuit | Refer to VSC OFF Indicator Light Remains ON |
| Master cylinder solenoid (skid control ECU) | Refer to DISASSEMBLY | |
| VSC OFF indicator light abnormal (Does not come on) | VSC OFF indicator light circuit | Refer to VSC OFF Indicator Light does not Come ON |
| Master cylinder solenoid (skid control ECU) | Refer to DISASSEMBLY | |
| Skid control buzzer abnormal* | Skid control buzzer circuit | Refer to Skid Control Buzzer Circuit |
| Buzzer abnormal | VSC buzzer circuit | Refer to VSC Buzzer Circuit |
| TRAC OFF indicator abnormal (Remains on) | TRAC OFF indicator light circuit | Refer to TRAC OFF Indicator Light Remains ON |
| Master cylinder solenoid (skid control ECU) | Refer to DISASSEMBLY | |
| TRAC OFF indicator abnormal (Does not come on) | TRAC OFF indicator light circuit | Refer to TRAC OFF Indicator Light does not Come ON |
| Master cylinder solenoid (skid control ECU) | Refer to DISASSEMBLY | |
| Crawl indicator light abnormal (Remains on) | Crawl indicator light circuit | Refer to Crawl Indicator Light Remains ON |
| Master cylinder solenoid (skid control ECU) | Refer to DISASSEMBLY | |
| Crawl indicator light abnormal (Does not come on) | Crawl indicator light circuit | Refer to Crawl Indicator Light does not Come ON |
| Master cylinder solenoid (skid control ECU) | Refer to DISASSEMBLY | |
| Multi-terrain select indicator light abnormal (Remains on) | Multi-terrain select indicator light circuit | Refer to Multi-terrain Select Indicator Light Remains ON |
| Multi-terrain select indicator light abnormal (Does not come on) | Multi-terrain select indicator light circuit | Refer to Multi-terrain Select Indicator Light does not Come ON |
| Downhill assist control indicator light abnormal (Remains on) | Downhill assist control indicator light circuit | Refer to Downhill Assist Control Indicator Light Remains ON |
| Master cylinder solenoid (skid control ECU) | Refer to DISASSEMBLY | |
| Downhill assist control indicator light abnormal (Does not come on) | Downhill assist control indicator light circuit | Refer to Downhill Assist Control Indicator Light does not Come ON |
| Master cylinder solenoid (skid control ECU) | Refer to DISASSEMBLY |
- *: w/ Dynamic Radar Cruise Control System