Problem Symptoms Table
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.
POWER STEERING SYSTEM
| Symptom | Suspected Area | See |
|---|---|---|
| Steering is heavy. | Front tires (Improperly inflated, unevenly worn) | Refer to INSPECTION |
| Front wheel alignment (Incorrect) | Refer to ADJUSTMENT | |
| Front suspension (Lower ball joint) | Refer to INSPECTION | |
| Power steering gear assembly | Refer to REMOVAL | |
| Steering column assembly | Refer to REMOVAL | |
| Torque sensor (Built into steering column assembly) | - | |
| Power steering motor | - | |
| Speed sensor | Refer to TEST MODE PROCEDURE | |
| Skid control ECU | - | |
| Battery and power source system | - | |
| Power steering ECU power source voltage and relay | - | |
| Power steering ECU assembly | Refer to REMOVAL | |
| Steering effort differs between turning right and left or steering effort is uneven. | Calibration of turning angle sensor output and torque sensor | Refer to CALIBRATION |
| Front tires (Improperly inflated, unevenly worn) | Refer to INSPECTION | |
| Front wheel alignment (Incorrect) | Refer to ADJUSTMENT | |
| Front suspension (Lower ball joint) | Refer to INSPECTION | |
| Power steering gear | Refer to REMOVAL | |
| Torque sensor (Built into steering column assembly) | - | |
| Steering column assembly | Refer to REMOVAL | |
| Power steering motor | - | |
| Power steering ECU assembly | Refer to REMOVAL | |
| While driving, steering effort does not change in accordance with vehicle speed or the steering wheel does not return properly. | Front suspension (Lower ball joint) | Refer to INSPECTION |
| Speed sensor | Refer to TEST MODE PROCEDURE | |
| Skid control ECU (Built into brake actuator) | - | |
| Combination meter | Refer to REMOVAL | |
| Torque sensor (Built into steering column assembly) | - | |
| Power steering motor | - | |
| Power steering gear assembly | Refer to REMOVAL | |
| Power steering ECU assembly | Refer to REMOVAL | |
| A knocking (or clunking) sound occurs when turning the steering wheel while power steering is operating. | Front suspension (Lower ball joint) | Refer to INSPECTION |
| Steering intermediate shaft | - | |
| Power steering gear | Refer to REMOVAL | |
| Noise occurs when turning the steering wheel during low speed driving. | Power steering gear | Refer to REMOVAL |
| Steering column assembly | Refer to REMOVAL | |
| Power steering ECU assembly | Refer to REMOVAL | |
| High-pitched sounds (squeaking) occur when turning the steering wheel slowly with the vehicle stopped. | Power steering gear assembly | Refer to REMOVAL |
| Power steering motor | - | |
| The steering wheel vibrates and noise occurs when turning the steering wheel from lock to lock. | Power steering gear assembly | Refer to REMOVAL |
| Steering column assembly | Refer to REMOVAL | |
| P/S warning light remains on. | P/S warning light | Refer to PS Warning Light Remains ON |