POWER STEERING SYSTEM PROBLEM SYMPTOMS TABLE
Tech Tips
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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.
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Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | See page |
|---|---|---|
| Steering is heavy. | Front tires (Improperly inflated, unevenly worn) | |
| Front wheel alignment (Incorrect) | ||
| Front suspension (Lower ball joint) | ||
| Power steering gear assembly | ||
| Steering column assembly (for Manual Tilt and Manual Telescopic Steering Column) | ||
| Steering column assembly (for Power Tilt and Power Telescopic Steering Column) | ||
| Torque sensor (Built into steering column assembly) | ||
| Power steering motor | ||
| Speed sensor | ||
| Skid control ECU | ||
| Battery and power source system | - | |
| Power steering ECU power supply voltage and relay | ||
| Power steering ECU assembly (for LHD) | ||
| Power steering ECU assembly (for RHD) | ||
| Steering effort differs between right and left or is uneven. | Calibration of rotation angle sensor output and torque sensor | |
| Front tires (Improperly inflated, unevenly worn) | ||
| Front wheel alignment (Incorrect) | ||
| Front suspension (Lower ball joint) | ||
| Power steering gear assembly | ||
| Torque sensor (Built into steering column assembly) | ||
| Steering column assembly (for Manual Tilt and Manual Telescopic Steering Column) | ||
| Steering column assembly (for Power Tilt and Power Telescopic Steering Column) | ||
| Power steering motor | ||
| Power steering ECU assembly (for LHD) | ||
| Power steering ECU assembly (for RHD) | ||
| 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) | |
| Speed sensor | ||
| Skid control ECU | ||
| Combination meter | ||
| Torque sensor (Built into steering column assembly) | ||
| Power steering motor | ||
| Power steering gear assembly | ||
| Power steering ECU assembly (for LHD) | ||
| Power steering ECU assembly (for RHD) | ||
| A knocking (or cranking) sound occurs when turning the steering wheel while power steering operating. | Front suspension (Lower ball joint) | |
| Steering intermediate shaft (for Manual Tilt and Manual Telescopic Steering Column) | ||
| Steering intermediate shaft (for Power Tilt and Power Telescopic Steering Column) | ||
| Power steering gear assembly | ||
| Noise occurs when turning the steering wheel during low speed driving. | Power steering gear assembly | |
| Steering column assembly (for Manual Tilt and Manual Telescopic Steering Column) | ||
| Steering column assembly (for Power Tilt and Power Telescopic Steering Column) | ||
| Power steering ECU assembly (for LHD) | ||
| Power steering ECU assembly (for RHD) | ||
| High-pitched sounds (squeaking) occur when turning the steering wheel slowly with the vehicle stopped. | Power steering gear assembly | |
| Power steering motor | ||
| The steering wheel vibrates and noise occurs when turning the steering wheel from lock to lock. | Power steering gear assembly | |
| Steering column assembly (for Manual Tilt and Manual Telescopic Steering Column) | ||
| Steering column assembly (for Power Tilt and Power Telescopic Steering Column) | ||
| The PS warning light remains on. | EPS warning light circuit |