POWER STEERING SYSTEM PROBLEM SYMPTOMS TABLE
Tech Tips
Use the table below to help determine the cause of the problem symptom. 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.
| 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 link assembly | ||
| Steering column assembly | - | |
| Auxiliary battery and power source system | ||
| Power source voltage of power steering ECU | ||
| Power steering converter assembly | ||
| Power steering ECU | ||
| Vehicle condition (The steering wheel is turned from left to right repeatedly with the vehicle stopped or a heavy load is continuously applied to the vehicle) | ||
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| Steering effort differs between right and left or is uneven. | Power steering ECU (Steering center point is not recorded correctly) | |
| Front tires (Improperly inflated, unevenly worn) | ||
| Front wheel alignment (Incorrect) | ||
| Front suspension (Lower ball joint) | ||
| Power steering link assembly | ||
| Steering column assembly | - | |
| Power steering ECU | ||
| While driving, steering effort does not change in accordance with vehicle speed, or the steering wheel does not return to its centered position easily. | Speed sensor | |
| Steering angle sensor | ||
| Front suspension (Lower ball joint) | ||
| Skid control ECU | ||
| Power steering link assembly | ||
| Power steering ECU | ||
| CAN communication system (for LHD) | ||
| CAN communication system (for RHD) | ||
| Friction sounds occur when turning steering wheel during low speed driving. | Power steering link assembly | |
| Steering column assembly | - | |
| PS warning light remains on | PS warning light remains on | |
| A knocking (or cranking) sound occurs when turning the steering wheel back and forth while power steering is in operation. | Power steering link assembly | |
| Steering column assembly | - |