ANTI-LOCK BRAKE SYSTEM PROBLEM SYMPTOMS TABLE
If no DTCs are 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 page.
Note
When replacing the brake actuator or sensor, turn the ignition switch to OFF.
| Symptom | Suspected area | See page |
|---|---|---|
| ABS does not operate | When results of checks 1 - 5 normal, but problem still occurs, replace brake actuator | |
| 1. Check DTC reconfirming normal code output | ||
| 2. IG power source circuit | ||
| 3. Speed sensor circuit (Front circuit) | ||
| 4. Speed sensor circuit (Rear circuit) | ||
| 5. Check brake actuator with intelligent tester II. If abnormal, check hydraulic circuit for leakage. | ||
| ABS does not operate efficiently | When results of checks 1 - 5 normal, but problem still occurs, replace brake actuator | |
| 1. Check DTC reconfirming normal code output. | ||
| 2. Speed sensor circuit (Front circuit) | ||
| 3. Speed sensor circuit (Rear circuit) | ||
| 4. Stop lamp switch circuit | ||
| 5. Check brake actuator with intelligent tester II. If abnormal, check hydraulic circuit for leakage. | ||
| ABS warning light abnormal | 1. ABS warning light circuit (Remains ON) | |
| 2. ABS warning light circuit (Does not light up) | ||
| 3. Skid control ECU (Brake actuator) | ||
| DTC check cannot be performed | When results of checks 1 - 3 normal, but problem still occurs, replace brake actuator | |
| 1. ABS warning light circuit (Remains ON) | ||
| 2. ABS warning light circuit (Does not light up) | ||
| 3. TC terminal circuit | ||
| Speed sensor signal check cannot be performed | 1. Skid control ECU (Brake actuator) |