Problem Symptoms Table
HINT:
- Use the table below to help determine the cause of the 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.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
POWER STEERING SYSTEM
| Symptom | Suspected Area | See |
|---|---|---|
| Heavy steering | Front tires (improperly inflated, unevenly worn) | Refer to INSPECTION |
| Front wheel alignment (incorrect) | Refer to ADJUSTMENT | |
| Front suspension (lower ball joint) | Refer to REMOVAL | |
| Steering column | Refer to REMOVAL | |
| Torque sensor (built into steering column) | Refer to DTC C1511: Torque Sensor Circuit Malfunction; DTC C1512: Torque Sensor Circuit Malfunction; DTC C1513: Torque Sensor Circuit Malfunction; DTC C1514: Torque Sensor Power Supply Abnormal; DTC C1517: Torque Hold Abnormal | |
| Power steering motor | Refer to REMOVAL | |
| Speed sensor | Refer to REMOVAL | |
| Skid control ECU | Refer to REMOVAL | |
| Battery and power source system | - | |
| Power steering ECU power source voltage and relay | Refer to TERMINALS OF ECU | |
| Power steering ECU | Refer to REMOVAL | |
| Steering effort differs between right and left, or steering effort is uneven. | Initialization of rotation angle sensor and calibration of torque sensor zero point are not completed. | Refer to DTC C1515: Torque Sensor Zero Point Adjustment Undone; DTC C1525: Rotation Angle Sensor Initialization Undone |
| Front tires (improperly inflated, unevenly worn) | Refer to INSPECTION | |
| Front wheel alignment (incorrect) | Refer to ADJUSTMENT | |
| Front suspension (lower ball joint) | Refer to REMOVAL | |
| Power steering gear (for 2WD) | Refer to REMOVAL | |
| Power steering gear (for 4WD) | Refer to REMOVAL | |
| Torque sensor (built into steering column) | Refer to DTC C1511: Torque Sensor Circuit Malfunction; DTC C1512: Torque Sensor Circuit Malfunction; DTC C1513: Torque Sensor Circuit Malfunction; DTC C1514: Torque Sensor Power Supply Abnormal; DTC C1517: Torque Hold Abnormal | |
| Steering column | Refer to REMOVAL | |
| Power steering motor | Refer to REMOVAL | |
| Power steering ECU | Refer to REMOVAL | |
| 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) | Refer to REMOVAL |
| Speed sensor | Refer to REMOVAL | |
| Skid control ECU | Refer to REMOVAL | |
| Combination meter | Refer to REMOVAL | |
| Torque sensor (built into steering column) | Refer to DTC C1511: Torque Sensor Circuit Malfunction; DTC C1512: Torque Sensor Circuit Malfunction; DTC C1513: Torque Sensor Circuit Malfunction; DTC C1514: Torque Sensor Power Supply Abnormal; DTC C1517: Torque Hold Abnormal | |
| Power steering motor | Refer to REMOVAL | |
| Power steering ECU | Refer to REMOVAL | |
| CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| 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) | Refer to REMOVAL |
| Steering intermediate shaft | Refer to REMOVAL | |
| Power steering ECU | Refer to REMOVAL | |
| Noise occurs when turning the steering wheel during low-speed driving. | Power steering gear (for 2WD) | Refer to REMOVAL |
| Power steering gear (for 4WD) | Refer to REMOVAL | |
| Steering column | Refer to REMOVAL | |
| Friction occurs when turning the steering wheel during low-speed driving. | Power steering motor | Refer to REMOVAL |
| Steering column | Refer to REMOVAL | |
| A high-pitched sound (squeaking) occurs when turning the steering wheel slowly with the vehicle stopped. | Power steering motor | Refer to REMOVAL |
| The steering wheel vibrates and noise occurs when turning the steering wheel from lock to lock with the vehicle stopped. | Power steering gear (for 2WD) | Refer to REMOVAL |
| Power steering gear (for 4WD) | Refer to REMOVAL | |
| Steering column | Refer to REMOVAL | |
| P/S warning is always indicated on the combination meter. | Power source voltage of power steering ECU | Refer to TERMINALS OF ECU |
| Combination meter | Refer to REMOVAL | |
| Power steering ECU | Refer to REMOVAL |