POWER STEERING SYSTEM PROBLEM SYMPTOMS TABLE
Tech Tips
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Use the following table to help determine the cause of a problem. The likely causes of the problem are indicated in descending order. Check each suspected area in order. Repair or replace faulty parts or perform adjustments 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 | ||
| Torque sensor (Built into steering gear assembly) | ||
| Power steering motor | ||
| Speed sensor | ||
| Skid control ECU | - | |
| Battery and power source system | - | |
| Power steering ECU power source voltage and relay | ||
| Power steering ECU assembly | ||
| Steering effort differs between right and left or is uneven. | Calibration of turning 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 link assembly) | ||
| Steering column assembly | ||
| Power steering motor | ||
| Power steering ECU assembly | ||
| 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 gear assembly) | ||
| Power steering motor | ||
| Power steering gear assembly | ||
| Power steering ECU assembly | ||
| A knocking (or cranking) sound occurs when turning the steering wheel back and forth while power steering is in operation. | Front suspension (Lower ball joint) | |
| Steering intermediate shaft | ||
| Power steering gear assembly | ||
| Noise occurs when turning the steering wheel during low speed driving. | Power steering gear assembly | |
| Steering column assembly | ||
| Power steering ECU assembly | ||
| High-pitched sounds (Squeaking) occur when turning the steering wheel slowly with the stepped. | 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 | ||
| P/S warning light remains on. | PS warning light remains on | |
| P/S warning light does not come on. | PS warning light does not come on |