Problem Symptoms Table
Use the table below to help determine the cause of the problem. If necessary, repair or replace the faulty parts.
POWER STEERING SYSTEM
POWER STEERING SYSTEM PROBLEM SYMPTOMS REFERENCE
| Symptom | Suspected area | See |
|---|---|---|
| Steering is heavy. | Front tires (Improperly inflated, unevenly worn) | INSPECTION |
| Front wheel alignment (Incorrect) | FRONT WHEEL ALIGNMENT | |
| Front suspension (Lower ball joint) | INSPECTION | |
| Steering column assembly (for Power tilt and power telescopic) | REMOVAL | |
| Steering column assembly (for Manual tilt) | REMOVAL | |
| Torque sensor (Built into steering link 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 | ||
| Steering effort differs between right and left or is uneven. | Calibration of turning angle sensor output and torque sensor zero point is not completed | CALIBRATION |
| Front tires (Improperly inflated, unevenly worn) | INSPECTION | |
| Front wheel alignment (Incorrect) | FRONT WHEEL ALIGNMENT | |
| Front suspension (Lower ball joint) | INSPECTION | |
| Power steering link assembly | REMOVAL | |
| Torque sensor (Built into steering link assembly) | - | |
| Steering column assembly (for Power tilt and power telescopic) | - | |
| Steering column assembly (for Manual tilt) | - | |
| Power steering motor | - | |
| POWER STEERING ECU | ||
| 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) | INSPECTION |
| Speed sensor | - | |
| Skid control ECU | - | |
| Combination meter | - | |
| Engine speed detection circuit | - | |
| Torque sensor (Built into steering link assembly) | - | |
| Power steering motor | - | |
| POWER STEERING ECU | ||
| 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) | INSPECTION |
| Steering intermediate shaft | - | |
| Power steering link assembly | REMOVAL | |
| Noise occurs when turning the steering wheel during low speed driving. | Power steering link assembly | REMOVAL |
| Steering column assembly (for Power tilt and power telescopic) | REMOVAL | |
| Steering column assembly (for Manual tilt) | REMOVAL | |
| 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. | Power steering link assembly | REMOVAL |
| Steering column assembly (for Power tilt and power telescopic) | REMOVAL | |
| Steering column assembly (for Manual tilt) | REMOVAL |