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 brake actuator or sensor, turn the ignition switch off.
Vehicle Stability Control System
VEHICLE STABILITY CONTROL SYSTEM CHART
| Symptom | Suspected Area | Refer to |
|---|---|---|
| ABS, BA and/or EBD does not operate | Check for DTCs again and make sure that normal system code displayed. | DTC CHECK / CLEAR |
| IG power source circuit | DTC C1241 LOW POWER SUPPLY VOLTAGE MALFUNCTION | |
| Front speed sensor circuit | 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 | DTC C1407 OPEN OR SHORT IN REAR SPEED SENSOR RH CIRCUIT; DTC C1408 OPEN OR SHORT IN REAR SPEED SENSOR LH CIRCUIT | |
| Check brake actuator using Techstream (Check brake actuator operation using Active Test function). If abnormal, check hydraulic circuit for leakage. | ABS AND TRACTION ACTUATOR | |
| If symptoms still occur even after above circuits in suspected areas inspected and proved to be normal, replace brake actuator (skid control ECU). | REMOVAL | |
| ABS, BA and/or EBD does not operate efficiently | Check for DTCs again and make sure that normal system code displayed. | DTC CHECK / CLEAR |
| Front speed sensor circuit | 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 | 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 | STOP LIGHT SWITCH CIRCUIT | |
| Check brake actuator using Techstream (Check brake actuator operation using Active Test function). If abnormal, check hydraulic circuit for leakage. | ABS AND TRACTION ACTUATOR | |
| If symptoms still occur even after above circuits in suspected areas inspected and proved to be normal, replace brake actuator (skid control ECU). | REMOVAL | |
| VSC and/or TRAC does not operate | Check for DTCs again and make sure that normal system code displayed. | DTC CHECK / CLEAR |
| IG power source circuit | DTC C1241 LOW POWER SUPPLY VOLTAGE MALFUNCTION | |
| Check hydraulic circuit for leakage | - | |
| Front speed sensor circuit | 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 | DTC C1407 OPEN OR SHORT IN REAR SPEED SENSOR RH CIRCUIT; DTC C1408 OPEN OR SHORT IN REAR SPEED SENSOR LH CIRCUIT | |
| Yaw rate sensor circuit | DTC C1232 ACCELERATION SENSOR STUCK MALFUNCTION; DTC C1243 ACCELERATION SENSOR STUCK MALFUNCTION; DTC C1245 ACCELERATION SENSOR OUTPUT MALFUNCTION | |
| Steering angle sensor circuit | DTC C1432 STEERING ANGLE SENSOR POWER SOURCE VOLTAGE MALFUNCTION | |
| If symptoms still occur even after above circuits in suspected areas inspected and proved to be normal, replace brake actuator (skid control ECU). | REMOVAL | |
| Sensor signal check cannot be performed | TS and CG terminal circuit | TS AND CG TERMINAL CIRCUIT |
| Brake actuator (skid control ECU) | REMOVAL | |
| DTC check cannot be performed | Check for DTCs again and make sure that normal system code displayed. | DTC CHECK / CLEAR |
| TC and CG terminal circuit | TC AND CG TERMINAL CIRCUIT | |
| If symptoms still occur even after above circuits in suspected areas inspected and proved to be normal, replace brake actuator (skid control ECU). | REMOVAL | |
| ABS warning light abnormal (Remains on) | ABS warning light circuit | ABS WARNING LIGHT REMAINS ON |
| Brake actuator (skid control ECU) | REMOVAL | |
| ABS warning light abnormal (Does not come on) | ABS warning light circuit | ABS WARNING LIGHT DOES NOT COME ON |
| Brake actuator (skid control ECU) | REMOVAL | |
| VSC OFF indicator light abnormal (Remains on) | VSC OFF indicator light circuit | VSC OFF INDICATOR LIGHT REMAINS ON |
| Brake actuator (skid control ECU) | REMOVAL | |
| VSC OFF indicator light abnormal (Does not come on) | VSC OFF indicator light circuit | VSC OFF INDICATOR LIGHT DOES NOT COME ON |
| Brake actuator (skid control ECU) | REMOVAL | |
| BRAKE warning light abnormal (Remains on) | BRAKE warning light circuit | BRAKE WARNING LIGHT REMAINS ON |
| Brake actuator (skid control ECU) | REMOVAL | |
| BRAKE warning light abnormal (Does not come on) | BRAKE warning light circuit | BRAKE WARNING LIGHT DOES NOT COME ON |
| Brake actuator (skid control ECU) | REMOVAL | |
| Slip indicator light abnormal (Remains on) | Slip indicator light circuit | SLIP INDICATOR LIGHT REMAINS ON |
| Brake actuator (skid control ECU) | REMOVAL | |
| Slip indicator light abnormal (Does not come on) | Slip indicator light circuit | SLIP INDICATOR LIGHT DOES NOT COME ON |
| Brake actuator (skid control ECU) | REMOVAL | |
| TRAC OFF indicator light (Remains on) | TRAC OFF indicator light circuit | TRAC OFF INDICATOR LIGHT REMAINS ON |
| Brake actuator (skid control ECU) | REMOVAL | |
| TRAC OFF indicator light (Does not come on) | TRAC OFF indicator light circuit | TRAC OFF INDICATOR LIGHT DOES NOT COME ON |
| Brake actuator (skid control ECU) | REMOVAL | |
| Skid control buzzer abnormal | Skid control buzzer circuit | SKID CONTROL BUZZER CIRCUIT |
| Brake actuator (skid control ECU) | REMOVAL | |
| Downhill assist control does not operated | Check for DTCs again and make sure that normal system code displayed. | DTC CHECK / CLEAR |
| Downhill assist control indicator light circuit | DOWNHILL ASSIST CONTROL INDICATOR LIGHT DOES NOT COME ON | |
| If symptoms still occur even after above circuits in suspected areas inspected and proved to be normal, replace brake actuator (skid control ECU). | REMOVAL | |
| Downhill assist control indicator light abnormal (Remains on)*1 | Downhill assist control indicator light circuit | DOWNHILL ASSIST CONTROL INDICATOR LIGHT REMAINS ON |
| Brake actuator (skid control ECU) | REMOVAL | |
| Downhill assist control indicator light abnormal (Does not come on)*1 | Downhill assist control indicator light circuit | DOWNHILL ASSIST CONTROL INDICATOR LIGHT DOES NOT COME ON |
| Brake actuator (skid control ECU) | REMOVAL | |
| Hill-start assist control does not operate*2 | Brake actuator (skid control ECU) | REMOVAL |
| AUTO LSD does not operate*3 | Check for DTCs again and make sure that normal system code displayed. | DTC CHECK / CLEAR |
| VSC OFF switch circuit | AUTO LSD INDICATOR LIGHT DOES NOT COME ON | |
| AUTO LSD indicator light circuit | AUTO LSD INDICATOR LIGHT DOES NOT COME ON | |
| If symptoms still occur even after above circuits in suspected areas inspected and proved to be normal, replace brake actuator (skid control ECU). | REMOVAL | |
| AUTO LSD indicator light abnormal (Remains on)*3 | AUTO LSD indicator circuit | AUTO LSD INDICATOR LIGHT REMAINS ON |
| Brake actuator (skid control ECU) | REMOVAL | |
| AUTO LSD indicator light abnormal (Does not come on)*3 | AUTO LSD indicator circuit | AUTO LSD INDICATOR LIGHT DOES NOT COME ON |
| Brake actuator (skid control ECU) | REMOVAL | |
| HINT: *1: w/ Downhill Assist Control *2: w/ Hill-start Assist Control *3: for 2WD |
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