Problem Symptoms Table
If there are no DTCs output and 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 page.
NOTE:
When replacing the brake actuator assembly, sensors, etc., turn the ignition switch off.
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.
Anti-lock Brake System
ANTI-LOCK BRAKE SYSTEM TROUBLESHOOTING REFERENCE CHART
| Symptom | Suspected Area | Reference |
|---|---|---|
| ABS 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 | DTC C1241/41 LOW BATTERY POSITIVE VOLTAGE OR ABNORMALLY HIGH BATTERY POSITIVE VOLTAGE | |
| Front speed sensor circuit | 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 | 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 using the Techstream. (Check brake actuator assembly operation using the Active Test function.) If abnormal, check the hydraulic circuit for leaks. | BRAKE ACTUATOR (W/O VSC) | |
| 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). | BRAKE ACTUATOR (W/O VSC) | |
| ABS 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 | 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 | 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 | DTC C1249/49 OPEN IN STOP LIGHT SWITCH CIRCUIT | |
| Check the brake actuator assembly using the Techstream. (Check brake actuator assembly operation using the Active Test function.) If abnormal, check the hydraulic circuit for leaks. | BRAKE ACTUATOR (W/O VSC) | |
| 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). | BRAKE ACTUATOR (W/O VSC) | |
| 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 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). | BRAKE ACTUATOR (W/O VSC) | |
| ABS warning light abnormal (Remains on) | ABS warning light circuit | ABS WARNING LIGHT REMAINS ON |
| Brake actuator assembly (Skid control ECU) | BRAKE ACTUATOR (W/O VSC) | |
| 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) | BRAKE ACTUATOR (W/O VSC) | |
| Brake warning light abnormal (Remains on) | Brake warning light circuit | BRAKE WARNING LIGHT REMAINS ON |
| Brake actuator assembly (Skid control ECU) | BRAKE ACTUATOR (W/O VSC) | |
| 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) | BRAKE ACTUATOR (W/O VSC) | |
| Sensor check cannot be done | TS and CG terminal circuit | TS AND CG TERMINAL CIRCUIT |
| Brake actuator assembly (Skid control ECU) | BRAKE ACTUATOR (W/O VSC) |