Problem Symptoms Table
HINT:
- Use the following table to help determine the cause of a problem. The likely causes of the problem are indicated in descending order. Check each suspected area in order. Repair or replace faulty parts or perform adjustments as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
PROBLEM SYMPTOMS
| Symptom | Suspected Area | See |
|---|---|---|
| Steering is heavy | 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 assembly | Refer to REMOVAL | |
| Steering column assembly | Refer to REMOVAL | |
| Torque sensor (Built into steering gear assembly) | Refer to DTC C1511: Torque Sensor Circuit Malfunction; DTC C1512: Torque Sensor Circuit Malfunction; DTC C1513: Torque Sensor Circuit Malfunction | |
| Power steering motor | Refer to REMOVAL | |
| Speed sensor | Refer to TEST MODE PROCEDURE | |
| Skid control ECU | Refer to REMOVAL | |
| Battery and power source system | - | |
| Power steering ECU power source voltage and relay | Refer to DTC C1552: PIG Power Supply Voltage Malfunction; DTC C1554: Power Supply Relay Failure | |
| Power steering ECU assembly | Refer to REMOVAL | |
| Steering effort differs between right and left or is uneven. | Calibration of turning angle sensor output and torque sensor | Refer to CALIBRATION |
| 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 | Refer to REMOVAL | |
| Torque sensor (Built into steering link assembly) | Refer to DTC C1511: Torque Sensor Circuit Malfunction; DTC C1512: Torque Sensor Circuit Malfunction; DTC C1513: Torque Sensor Circuit Malfunction | |
| Steering column assembly | Refer to REMOVAL | |
| Power steering motor | Refer to REMOVAL | |
| Power steering ECU assembly | 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 TEST MODE PROCEDURE | |
| Skid control ECU | Refer to REMOVAL | |
| Combination meter | Refer to REMOVAL | |
| Torque sensor (Built into steering gear assembly) | Refer to DTC C1511: Torque Sensor Circuit Malfunction; DTC C1512: Torque Sensor Circuit Malfunction; DTC C1513: Torque Sensor Circuit Malfunction | |
| Power steering motor | Refer to REMOVAL | |
| Power steering gear assembly | Refer to REMOVAL | |
| Power steering ECU assembly | Refer to REMOVAL | |
| 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 gear | Refer to REMOVAL | |
| Noise occurs when turning the steering wheel during low speed driving. | Power steering gear | Refer to REMOVAL |
| Steering column assembly | Refer to REMOVAL | |
| Power steering ECU assembly | Refer to REMOVAL | |
| High-pitched sounds (squeaking) occur when turning the steering wheel slowly with the stepped. | Power steering gear assembly | Refer to REMOVAL |
| Power steering motor | Refer to REMOVAL | |
| The steering wheel vibrates and noise occurs when turning the steering wheel from lock to lock. | Power steering gear assembly | Refer to REMOVAL |
| Steering column assembly | Refer to REMOVAL | |
| P/S warning light remains on. | PS warning light remains on | Refer to PS Warning Light Remains ON |
| P/S warning light does not come on. | PS warning light does not come on | Refer to PS Warning Light does not Come ON |