Brake. Lexus Is250, Is220D. Gse20 Ale20
Brake Control. Lexus Is250, Is220D. Gse20 Ale20
Vehicle Stability Control System (W/O Vdim) -- 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.
- HINT:
- Inspect the fuse and relay before investigating the suspected areas as shown in the table below.
- Inspect each malfunction circuit in numerical order for the corresponding symptom.
| Symptom | Suspected Area | See page |
| ABS, BA and/or EBD does not operate | 1. Check the DTC again and make sure that the normal system code is output. | Click here |
| 2. IG power source circuit | Click here | |
| 3. Front speed sensor circuit | Click here | |
| 4. Rear speed sensor circuit | Click here | |
| 5. Check the brake actuator assembly with the intelligent tester. (Check brake actuator assembly operation using the Active Test function.) If abnormal, check the hydraulic circuit for leakage. | Click here | |
| 6. 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). | Click here | |
| ABS, BA and/or EBD does not operate efficiently | 1. Check the DTC again and make sure that the normal system code is output. | Click here |
| 2. Front speed sensor circuit | Click here | |
| 3. Rear speed sensor circuit | Click here | |
| 4. Stop light switch circuit | Click here | |
| 5. Check the brake actuator assembly with the intelligent tester. (Check brake actuator assembly operation using the Active Test function.) If abnormal, check the hydraulic circuit for leakage. | Click here | |
| 6. 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). | Click here | |
| ABS sensor DTC check cannot be done | 1. Check the DTC again and make sure that the normal system code is output. | Click here |
| 2. TC and CG terminal circuit | Click here | |
| 3. 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). | Click here | |
| ABS warning light abnormal (Remains on) | 1. ABS warning light circuit | Click here |
| 2. Brake actuator assembly (Skid control ECU) | Click here | |
| ABS warning light abnormal (Does not come on) | 1. ABS warning light circuit | Click here |
| 2. Brake actuator assembly (Skid control ECU) | Click here | |
| BRAKE warning light abnormal (Remains on) | 1. BRAKE warning light circuit | Click here |
| 2. Brake actuator assembly (Skid control ECU) | Click here | |
| BRAKE warning light abnormal (Does not come on) | 1. BRAKE warning light circuit | Click here |
| 2. Brake actuator assembly (Skid control ECU) | Click here | |
| VSC and/or TRC does not operate | 1. Check the DTC again and make sure that the normal system code is output. | Click here |
| 2. IG power source circuit | Click here | |
| 3. Check the hydraulic circuit for leakage | - | |
| 4. Front speed sensor circuit | Click here | |
| 5. Rear speed sensor circuit | Click here | |
| 6. Yaw rate and acceleration sensor circuit | Click here | |
| 7. Steering angle sensor circuit | Click here | |
| 8. 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). | Click here | |
| VSC sensor DTC check cannot be done | 1. Check the DTC again and make sure that the normal system code is output. | Click here |
| 2. TC and CG terminal circuit | Click here | |
| 3. 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). | Click here | |
| VSC warning (multi information display and master caution indicator light) light abnormal (Remains on) | 1. VSC warning light circuit | Click here |
| 2. Brake actuator assembly (Skid control ECU) | Click here | |
| VSC warning (multi information display and master caution indicator light) light abnormal (Does not come on) | 1. VSC warning light circuit | Click here |
| 2. Brake actuator assembly (Skid control ECU) | Click here | |
| SLIP indicator light abnormal (Remains on) | 1. SLIP indicator light circuit | Click here |
| 2. Brake actuator assembly (Skid control ECU) | Click here | |
| SLIP indicator light abnormal (Does not come on) | 1. SLIP indicator light circuit | Click here |
| 2. Brake actuator assembly (Skid control ECU) | Click here | |
| Sensor check cannot be done | 1. TS and CG terminal circuit | Click here |
| 2. Brake actuator assembly (Skid control ECU) | Click here | |
| Skid control buzzer abnormal | 1. Skid control buzzer circuit | Click here |
| 2. Brake actuator assembly (Skid control ECU) | Click here |