Problem Symptoms Table
HINT:
- Use the table below 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.
Power Steering System:
POWER STEERING SYSTEM PROBLEM SYMPTOMS CHART
| Symptom | Suspected Area | See |
|---|---|---|
| Heavy steering. | Front tires (improperly inflated, unevenly worn) | TIRE AND WHEEL SYSTEM |
| Front wheel alignment (incorrect) | FRONT WHEEL ALIGNMENT | |
| Front suspension (lower ball joint) | INSPECTION | |
| Steering column | REMOVAL | |
| Torque sensor (built into steering column) | 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 | REMOVAL | |
| Speed sensor | REMOVAL | |
| Skid control ECU | REMOVAL | |
| Battery and power source system | - | |
| Power steering ECU power source voltage and relay | TERMINALS OF ECU | |
| Power steering ECU | POWER STEERING ECU | |
| 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 | DTC C1515 TORQUE SENSOR ZERO POINT ADJUSTMENT UNDONE; DTC C1525 ROTATION ANGLE SENSOR INITIALIZATION UNDONE |
| Front tires (improperly inflated, unevenly worn) | TIRE AND WHEEL SYSTEM | |
| Front wheel alignment (incorrect) | FRONT WHEEL ALIGNMENT | |
| Front suspension (lower ball joint) | INSPECTION | |
| Power steering gear | POWER STEERING GEAR | |
| Torque sensor (built into steering column) | 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 | REMOVAL | |
| Power steering motor | REMOVAL | |
| Power steering ECU | POWER STEERING ECU | |
| 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) | INSPECTION |
| Speed sensor | REMOVAL | |
| Skid control ECU | REMOVAL | |
| Combination meter | COMBINATION METER | |
| Engine speed detection circuit | - | |
| Torque sensor (built into steering column) | 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 | REMOVAL | |
| Power steering ECU | POWER STEERING ECU | |
| CAN communication system | CAN COMMUNICATION SYSTEM | |
| 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) | INSPECTION |
| Steering intermediate shaft | REMOVAL | |
| Power steering ECU | POWER STEERING ECU | |
| Noise occurs when turning the steering wheel during low-speed driving. | Power steering gear | POWER STEERING GEAR |
| Steering column | REMOVAL | |
| Friction occurs when turning the steering wheel during low-speed driving. | Power steering motor | REMOVAL |
| Steering column | REMOVAL | |
| A high-pitched sound (squeaking) occurs when turning the steering wheel slowly with the vehicle stopped. | Power steering motor | REMOVAL |
| The steering wheel vibrates and noise occurs when turning the steering wheel from lock to lock with the vehicle stopped. | Power steering gear | POWER STEERING GEAR |
| Steering column | REMOVAL | |
| PS warning is always indicated on the combination meter. | PS warning light remains ON | PS WARNING LIGHT REMAINS ON |