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 any of the brake actuator assembly or sensors, etc., turn the ignition switch off.
HINT:
- Inspect the fuses and relays before investigating the suspected areas shown in the table below.
- Inspect each suspected area in order for the corresponding symptom.
Vehicle Stability Control System:
VEHICLE STABILITY CONTROL SYSTEM
| Symptom | Suspected Area | Information | ||
|---|---|---|---|---|
| ABS, BA and/or EBD does not operate | Check for DTCs again and make sure that the normal system code is output | DTC CHECK/CLEAR | ||
| IG power source circuit (Low power supply voltage malfunction) | DTC C1241: LOW POWER SUPPLY VOLTAGE MALFUNCTION | |||
| IG power source circuit (High power supply voltage malfunction) | DTC C1417: HIGH POWER SUPPLY VOLTAGE MALFUNCTION | |||
| Front speed sensor circuit (Output malfunction) | DTC C1413, C1414: FRONT SPEED SENSOR RH OUTPUT MALFUNCTION; FRONT SPEED SENSOR LH OUTPUT MALFUNCTION | |||
| Rear speed sensor circuit (Output malfunction) | DTC C1415, C1416: REAR SPEED SENSOR RH OUTPUT MALFUNCTION; DTC C1416 REAR SPEED SENSOR LH OUTPUT MALFUNCTION | |||
| Front speed sensor circuit (Open or short malfunction) | DTC C1405, C1406: OPEN OR SHORT IN FRONT SPEED SENSOR RH CIRCUIT; OPEN OR SHORT IN FRONT SPEED SENSOR LH CIRCUIT | |||
| Rear speed sensor circuit (Open or short malfunction) | DTC C1407, C1408: OPEN OR SHORT IN REAR SPEED SENSOR RH CIRCUIT; OPEN OR SHORT IN REAR SPEED SENSOR LH CIRCUIT | |||
| Front speed sensor circuit (Comparison malfunction) | DTC C1401: FRONT SPEED SENSOR RH MALFUNCTION | |||
| Rear speed sensor circuit (Comparison malfunction) | DTC C1403, C1404: REAR SPEED SENSOR RH MALFUNCTION; REAR SPEED SENSOR LH MALFUNCTION | |||
| Check the brake actuator assembly with Techstream (Check brake actuator assembly operation using the Active Test function) If abnormal, check the hydraulic circuit for leaks | ON-VEHICLE INSPECTION | |||
| If the symptom still occurs even after the circuits listed above have been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU) | REMOVAL | |||
| ABS, BA and/or EBD does not operate efficiently | Check for DTCs again and make sure that the normal system code is output | DTC CHECK/CLEAR | ||
| Front speed sensor circuit (Output malfunction) | DTC C1413, C1414: FRONT SPEED SENSOR RH OUTPUT MALFUNCTION; FRONT SPEED SENSOR LH OUTPUT MALFUNCTION | |||
| Rear speed sensor circuit (Output malfunction) | DTC C1415, C1416: REAR SPEED SENSOR RH OUTPUT MALFUNCTION; REAR SPEED SENSOR LH OUTPUT MALFUNCTION | |||
| Front speed sensor circuit (Open or short malfunction) | DTC C1405, C1406: OPEN OR SHORT IN FRONT SPEED SENSOR RH CIRCUIT; OPEN OR SHORT IN FRONT SPEED SENSOR LH CIRCUIT | |||
| Rear speed sensor circuit (Open or short malfunction) | DTC C1407, C1408: OPEN OR SHORT IN REAR SPEED SENSOR RH CIRCUIT; OPEN OR SHORT IN REAR SPEED SENSOR LH CIRCUIT | |||
| Front speed sensor circuit (Comparison malfunction) | DTC C1401: FRONT SPEED SENSOR RH MALFUNCTION | |||
| Rear speed sensor circuit (Comparison malfunction) | DTC C1403, C1404: REAR SPEED SENSOR RH MALFUNCTION; REAR SPEED SENSOR LH MALFUNCTION | |||
| Stop light switch circuit (Open or short malfunction) | DTC C1425: OPEN IN STOP LIGHT SWITCH CIRCUIT | |||
| Stop light switch circuit (Off stuck malfunction) | DTC C1426: STOP LIGHT SWITCH OFF STUCK MALFUNCTION | |||
| Check the brake actuator assembly with Techstream. (Check brake actuator assembly operation using the Active Test function ) If abnormal, check the hydraulic circuit for leaks | ON-VEHICLE INSPECTION | |||
| If the symptom still occurs even after the circuits listed above have been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU) | REMOVAL | |||
| ABS sensor DTC check cannot be done | Check for DTCs again and make sure that the normal system code is output | DTC CHECK/CLEAR | ||
| TC and CG terminal circuit | TC AND CG TERMINAL CIRCUIT | |||
| If the symptom still occurs even after the circuits listed above have been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU) | REMOVAL | |||
| ABS warning light abnormal (Remains on) | ABS warning light circuit | ABS WARNING LIGHT REMAINS ON | ||
| Brake actuator assembly (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 assembly (Skid control ECU) | REMOVAL | |||
| Brake warning light abnormal (Remains on) | Brake warning light circuit | BRAKE WARNING LIGHT REMAINS ON | ||
| Brake actuator assembly (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 assembly (Skid control ECU) | REMOVAL | |||
| VSC and/or TRAC does not operate | Check for DTCs again and make sure that the normal system code is output | DTC CHECK/CLEAR | ||
| IG power source circuit (Low power supply voltage malfunction) | DTC C1241: LOW POWER SUPPLY VOLTAGE MALFUNCTION | |||
| IG power source circuit (High power supply voltage malfunction) | DTC C1417: HIGH POWER SUPPLY VOLTAGE MALFUNCTION | |||
| Check the hydraulic circuit for leaks | - | |||
| Front speed sensor circuit (Output malfunction) | DTC C1413, C1414: FRONT SPEED SENSOR RH OUTPUT MALFUNCTION; FRONT SPEED SENSOR LH OUTPUT MALFUNCTION | |||
| Rear speed sensor circuit (Output malfunction) | DTC C1415, C1416: REAR SPEED SENSOR RH OUTPUT MALFUNCTION; REAR SPEED SENSOR LH OUTPUT MALFUNCTION | |||
| Front speed sensor circuit (Open or short malfunction) | DTC C1405, C1406: OPEN OR SHORT IN FRONT SPEED SENSOR RH CIRCUIT; OPEN OR SHORT IN FRONT SPEED SENSOR LH CIRCUIT | |||
| Rear speed sensor circuit (Open or short malfunction) | DTC C1407, C1408: OPEN OR SHORT IN REAR SPEED SENSOR RH CIRCUIT; OPEN OR SHORT IN REAR SPEED SENSOR LH CIRCUIT | |||
| Front speed sensor circuit (Comparison malfunction) | DTC C1401: FRONT SPEED SENSOR RH MALFUNCTION | |||
| Rear speed sensor circuit (Comparison malfunction) | DTC C1403, C1404: REAR SPEED SENSOR RH MALFUNCTION; REAR SPEED SENSOR LH MALFUNCTION | |||
| Yaw rate and acceleration sensor circuit (Zero point malfunction) | DTC C1210, C1336: ZERO POINT CALIBRATION OF YAW RATE SENSOR UNDONE; ZERO POINT CALIBRATION OF ACCELERATION SENSOR UNDONE | |||
| Yaw rate and acceleration sensor circuit (Power supply malfunction) | DTC C1381: ACCELERATION SENSOR POWER SUPPLY VOLTAGE MALFUNCTION | |||
| Acceleration sensor circuit (Comparison malfunction) | DTC C1420: ACCELERATION SENSOR MALFUNCTION | |||
| Yaw rate sensor circuit (Comparison malfunction) | DTC C1436: YAW RATE SENSOR MALFUNCTION | |||
| Yaw rate and acceleration sensor circuit (Stuck or output malfunction) | DTC C1232, C1243, C1245: ACCELERATION SENSOR STUCK MALFUNCTION; ACCELERATION SENSOR STUCK MALFUNCTION; ACCELERATION SENSOR OUTPUT MALFUNCTION | |||
| Yaw rate and acceleration sensor circuit (Internal malfunction) | DTC C1419, C1435: ACCELERATION SENSOR INTERNAL CIRCUIT; YAW RATE SENSOR INTERNAL CIRCUIT | |||
| Steering angle sensor circuit (Zero point malfunction) | DTC C1290: STEERING ANGLE SENSOR ZERO POINT MALFUNCTION | |||
| Steering angle sensor circuit (Power supply malfunction) | DTC C1432: STEERING ANGLE SENSOR POWER SOURCE VOLTAGE MALFUNCTION | |||
| Steering angle sensor circuit (Output malfunction) | DTC C1434: STEERING ANGLE SENSOR OUTPUT MALFUNCTION | |||
| Steering angle sensor circuit (Internal malfunction) | DTC C1433: STEERING ANGLE SENSOR INTERNAL CIRCUIT | |||
| If the symptom still occurs even after the circuits listed above have been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU). | REMOVAL | |||
| VSC sensor DTC check cannot be done | Check for DTCs again and make sure that the normal system code is output | DTC CHECK/CLEAR | ||
| TC and CG terminal circuit | TC AND CG TERMINAL CIRCUIT | |||
| If the symptom still occurs even after the circuits listed above have been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU) | REMOVAL | |||
| VSC OFF indicator light abnormal (Remains on) | VSC OFF indicator light circuit | VSC OFF INDICATOR LIGHT REMAINS ON | ||
| Brake actuator assembly (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 assembly (Skid control ECU) | REMOVAL | |||
| Slip indicator light abnormal (Remains on) | Slip indicator light circuit | SLIP INDICATOR LIGHT REMAINS ON | ||
| Brake actuator assembly (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 assembly (Skid control ECU) | REMOVAL | |||
| Downhill assist control indicator light abnormal (Remains on) ((1)) | Downhill assist control switch circuit | DTC C1379: DOWNHILL ASSIST CONTROL SWITCH MALFUNCTION (TEST MODE DTC) | ||
| Downhill assist control indicator light circuit | DOWNHILL ASSIST CONTROL INDICATOR LIGHT REMAINS ON | |||
| Brake actuator assembly (Skid control ECU) | REMOVAL | |||
| Downhill assist control indicator light abnormal (Does not come on) ((1)) | Downhill assist control switch circuit | DTC C1379 DOWNHILL ASSIST CONTROL SWITCH MALFUNCTION (TEST MODE DTC) | ||
| Downhill assist control indicator light circuit | DOWNHILL ASSIST CONTROL INDICATOR LIGHT DOES NOT COME ON | |||
| Brake actuator assembly (Skid control ECU) | REMOVAL | |||
| Sensor check cannot be done | TS and CG terminal circuit | TS AND CG TERMINAL CIRCUIT | ||
| Brake actuator assembly (Skid control ECU) | REMOVAL | |||
| Skid control buzzer abnormal | Skid control buzzer circuit | SKID CONTROL BUZZER CIRCUIT | ||
| Brake actuator assembly (Skid control ECU) | REMOVAL | |||
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