Problem Symptoms Table
HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, 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.
Steering System
STEERING SYSTEM PROBLEM SYMPTOMS CHART
| Symptom | Suspected Area | See |
|---|---|---|
| Heavy steering | Front tires (Improperly inflated or unevenly worn) | INSPECTION |
| Front wheel alignment (Incorrect) | FRONT WHEEL ALIGNMENT | |
| Front suspension (Lower ball joint) | INSPECTION | |
| Steering intermediate shaft | - | |
| Steering column | REMOVAL | |
| Steering gear | REMOVAL | |
| Power steering ECU (for 2AZ-FE) | POWER STEERING ECU (FOR 2AZ-FE) | |
| Power steering ECU (for 2ZR-FE) | POWER STEERING ECU (FOR 2ZR-FE) | |
| Poor return | Front tires (Improperly inflated or unevenly worn) | INSPECTION |
| Front wheel alignment (Incorrect) | FRONT WHEEL ALIGNMENT | |
| Steering column | REMOVAL | |
| Steering gear | REMOVAL | |
| Power steering ECU (for 2AZ-FE) | POWER STEERING ECU (FOR 2AZ-FE) | |
| Power steering ECU (for 2ZR-FE) | POWER STEERING ECU (FOR 2ZR-FE) | |
| No free play or excessive play | Steering intermediate shaft | - |
| Steering gear | REMOVAL | |
| Knocking (or cranking) sound occurs when steering wheel turned while power steering is in operation | Steering intermediate shaft | - |
| Front suspension (Lower ball joint) | INSPECTION | |
| Front axle hub (Hub bearing) | ON-VEHICLE INSPECTION | |
| Steering gear | REMOVAL | |
| Friction sound occurs when steering wheel turned during low-speed driving | Power steering motor | - |
| Steering column | REMOVAL | |
| High-pitched sound (squealing sound) occurs when steering wheel turned slowly with vehicle stopped | Power steering motor | - |
| Steering wheel vibrates and noise occurs when steering wheel turned while vehicle stopped | Power steering motor | - |
| Steering column | REMOVAL |