Symptom Table
Power steering system
POWER STEERING SYSTEM
| Symptoms | Inspection items | Reference |
|---|---|---|
| Steering operation is heavy | Front tires (improperly inflated, uneven wear) | WHEEL AND TIRE SYSTEM |
| Front wheel alignment (improper) | FRONT WHEEL ALIGNMENT | |
| Front suspension (lower ball joint) | INSPECTION | |
| Steering link assembly | INSPECTION | |
| Torque sensor (integrated into the steering column assembly) | - | |
| Power steering motor (integrated into the steering column assembly) | - | |
| Battery and power supply system | - | |
| Speed sensor system | - | |
| Skid control computer (brake actuator assembly) | HOW TO TROUBLESHOOT | |
| Power steering computer assembly power supply voltage and internal relay | - | |
| Power steering computer assembly | POWER STEERING COMPUTER | |
| The presence of continued operation under high load or dry steering | - | |
| Steering force required is different in the left and right directions or it is uneven. | Torque sensor zero point calibration or rotation angle sensor output calibration are incomplete. | WORK SUPPORT |
| Front tires (improperly inflated, uneven wear) | WHEEL AND TIRE SYSTEM | |
| Front wheel alignment (improper) | FRONT WHEEL ALIGNMENT | |
| Front suspension (lower ball joint) | INSPECTION | |
| Steering link assembly | INSPECTION | |
| Torque sensor (integrated into the steering column assembly) | - | |
| Steering column assembly | REMOVAL | |
| Power steering motor (integrated into the steering column assembly) | - | |
| Power steering computer assembly | POWER STEERING COMPUTER | |
| While driving, steering operation does not change depending on the speed, or the steering wheel does not return smoothly. | Front suspension (lower ball joint) | INSPECTION |
| Speed sensor system | - | |
| Skid control computer (brake actuator assembly) | HOW TO TROUBLESHOOT | |
| Torque sensor (integrated into the steering column assembly) | - | |
| Power steering motor (integrated into the steering column assembly) | - | |
| Steering link assembly | INSPECTION | |
| Power steering computer assembly | POWER STEERING COMPUTER | |
| CAN communication system | HOW TO TROUBLESHOOT | |
| There is a thumping noise during power steering operation, when the steering wheel returns to the neutral position. | Front suspension (lower ball joint) | INSPECTION |
| Steering intermediate shaft | - | |
| Steering link assembly | INSPECTION | |
| There is a rubbing sound when the steering wheel is turned during slow driving | Power steering motor (integrated into the steering column assembly) | - |
| Steering link assembly | INSPECTION | |
| Steering column assembly | REMOVAL | |
| Steering sensor (spiral cable SUB-assembly) | - | |
| Rubbing of the steering wheel assembly and the column cover | REMOVAL | |
| Power steering computer assembly | POWER STEERING COMPUTER | |
| An abnormal high-pitched squeaking sound occurs when the steering wheel is slowly turned when the vehicle is stopped | Steering link assembly | INSPECTION |
| Power steering motor (integrated into the steering column assembly) | - | |
| Steering wheel installation condition | INSTALLATION | |
| The steering wheel vibrates (accompanied with a noise) during dry steering | Steering link assembly | INSPECTION |
| Power steering motor (integrated into the steering column assembly) | - | |
| Steering column assembly | REMOVAL | |
| Steering wheel installation condition | INSTALLATION | |
| P/S warning light remains ON | Battery and power supply system | - |
| Refer to the flow chart. Refer to Figure. | P/S WARNING LIGHT REMAINS ON |