Problem Symptoms Table: Notes
Use the table below to help determine the cause of the problem. If necessary, repair or replace the faulty parts.
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 | 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 | POWER STEERING GEAR | |
| 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 | 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 | 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 | POWER STEERING GEAR | |
| Noise occurs when turning the steering wheel during low speed driving. | Power steering link assembly | POWER STEERING GEAR |
| 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 | POWER STEERING GEAR |
| Steering column assembly (for Power tilt and power telescopic) | REMOVAL | |
| Steering column assembly (for Manual tilt) | REMOVAL |