Steering. Lexus Gs430, Gs300. Uzs190 Grs190
Power Steering. Lexus Gs430, Gs300. Uzs190 Grs190
Electronic Power Steering System -- Problem Symptoms Table |
If the problem still occurs after the normal system code was displayed during the DTC check, check the components for each problem symptom in the order given in the following table and proceed to the relevant troubleshooting page.
| 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. Power steering link assembly (Torque sensor, motor rotation angle sensor, power steering motor) | Click here | |
| 5. Steering column assembly (for 3GR-FE) | Click here | |
| 6. Steering column assembly (for 3GR-FSE) | Click here | |
| 7. Steering column assembly (for 3UZ-FE) | Click here | |
| 8. Battery and power source system | - | |
| 9. Power source voltage of power steering ECU assembly | Click here | |
| 10. Power steering ECU assembly | Click here | |
| 11. Vehicle condition (The steering wheel is turned from left to right repeatedly with the vehicle stopped or a heavy load is continuously applied to the vehicle) | - | |
| Steering effort differs between right and left, or is uneven | 1. Power steering ECU assembly (Steering center point (zero point) is not recorded correctly) | 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 link assembly (Torque sensor, motor rotation angle sensor, power steering motor) | Click here | |
| 6. Steering column assembly (for 3GR-FE) | Click here | |
| 7. Steering column assembly (for 3GR-FSE) | Click here | |
| 8. Steering column assembly (for 3UZ-FE) | Click here | |
| 9. Power steering ECU assembly | Click here | |
| While driving, steering effort does not change in accordance with vehicle speed, or the steering wheel does not return to its centered position easily | 1. Front suspension (Lower ball joint) | Click here |
| 2. Speed sensor | Click here | |
| 3. Brake actuator (w/ VSC) | Click here | |
| 4. Skid control ECU (w/ ECB) | Click here | |
| 5. Power steering link assembly (Torque sensor, motor rotation angle sensor, power steering motor) | Click here | |
| 6. Power steering ECU assembly | Click here | |
| 7. CAN communication system | Click here | |
| Friction sounds occur when turning the steering wheel during low speed driving | 1. Power steering link assembly (Power steering motor) | Click here |
| 2. Steering column assembly (for 3GR-FE) | Click here | |
| 3. Steering column assembly (for 3GR-FSE) | Click here | |
| 4. Steering column assembly (for 3UZ-FE) | Click here | |
| High-pitched sounds (squeaking) occur when turning the steering wheel slowly with the vehicle stopped | 1. Power steering link assembly (Power steering motor) | Click here |
| The steering wheel vibrates and noise occurs when turning the steering wheel with the vehicle stopped | 1. Power steering link assembly (Power steering motor) | Click here |
| 2. Steering column assembly (for 3GR-FE) | Click here | |
| 3. Steering column assembly (for 3GR-FSE) | Click here | |
| 4. Steering column assembly (for 3UZ-FE) | Click here | |
| P/S warning light in the combination meter is always on | 1. IG power source circuit | Click here |
| 2. Combination meter | Click here | |
| 3. Power steering ECU assembly | Click here |