Steering. Lexus Is250, Is220D. Gse20 Ale20
Power Steering. Lexus Is250, Is220D. Gse20 Ale20
Power Steering System -- Problem Symptoms Table |
- HINT:
- Use the table below to help determine the cause of the problem. The numbers indicate likely causes of the problem in order. Check each part in order. If necessary, repair or replace the faulty parts.
| Symptom | Suspected area | See page |
| Steering is heavy. | 1. Front tires (Improperly inflated, unevenly worn) | Click here |
| 2. Front wheel alignment (Incorrect) | Click here | |
| 3. Front suspension (Lower ball joint) | Click here | |
| 4. Steering column assembly (for Power Tilt and Power Telescopic) | Click here | |
| 5. Steering column assembly (for Manual Tilt and Manual Telescopic) | Click here | |
| 6. Torque sensor (Built into steering gear assembly) | - | |
| 7. Power steering motor | - | |
| 8. Speed sensor | - | |
| 9. Skid control ECU | - | |
| 10. Battery and power source system | - | |
| 11. Power steering ECU power source voltage and relay | - | |
| 12. Power steering ECU | - | |
| Steering effort differs between right and left or is uneven. | 1. Calibration of turning angle sensor output and torque sensor zero point is not completed | Click here |
| 2. Front tires (Improperly inflated, unevenly worn) | Click here | |
| 3. Front wheel alignment (Incorrect) | Click here | |
| 4. Front suspension (Lower ball joint) | Click here | |
| 5. Power steering gear | Click here | |
| 6. Torque sensor (Built into steering link assembly) | - | |
| 7. Steering column assembly (for Power Tilt and Power Telescopic) | Click here | |
| 8. Steering column assembly (for Manual Tilt and Manual Telescopic) | Click here | |
| 9. Power steering motor | - | |
| 10. Power steering ECU | - | |
| While driving, steering effort does not change in accordance with vehicle speed or the steering wheel does not return properly. | 1. Front suspension (Lower ball joint) | Click here |
| 2. Speed sensor | - | |
| 3. Skid control ECU | - | |
| 4. Combination meter | - | |
| 5. Engine speed detection circuit | - | |
| 6. Torque sensor (Built into steering gear assembly) | - | |
| 7. Power steering motor | - | |
| 8. Power steering ECU | - | |
| A knocking (or cranking) sound occurs when turning the steering wheel back and forth while power steering is in operation. | 1. Front suspension (Lower ball joint) | Click here |
| 2. Steering intermediate shaft | - | |
| 3. Power steering gear | Click here | |
| Noise occurs when turning the steering wheel during low speed driving. | 1. Power steering gear | Click here |
| 2. Steering column assembly (for Power Tilt and Power Telescopic) | Click here | |
| 3. Steering column assembly (for Manual Tilt and Manual Telescopic) | Click here | |
| A high-pitched sound (squeaking) occurs when turning the steering wheel slowly with the vehicle stopped. | Power steering motor | - |
| The steering wheel vibrates and noise occurs when turning the steering wheel from lock to lock. | 1. Power steering gear | Click here |
| 2. Steering column assembly (for Power Tilt and Power Telescopic) | Click here | |
| 3. Steering column assembly (for Manual Tilt and Manual Telescopic) | Click here |