Problem Symptoms Table
If the problem still occurs after the normal system code was displayed during the DTC check, check the components for each problem symptom in the order given in the following table and proceed to the relevant troubleshooting page.
ELECTRONIC POWER STEERING SYSTEM
PROBLEM SYMPTOMS REFERENCE
| Symptom | Suspected area | See |
|---|---|---|
| Steering is heavy | 1. Front tires (Improperly inflated, unevenly worn) | INSPECTION |
| 2. Front wheel alignment (Incorrect) | FRONT WHEEL ALIGNMENT | |
| 3. Front suspension (Lower ball joint) | FRONT LOWER BALL JOINT | |
| 4. Power steering link assembly (Torque sensor, motor rotation angle sensor, power steering motor) (for 4WD) | POWER STEERING GEAR | |
| 5. Steering column assembly (for power tilt and power telescopic) | STEERING COLUMN ASSEMBLY (for Power Tilt and Power Telescopic) | |
| 6. Steering column assembly (for manual tilt) | STEERING COLUMN ASSEMBLY (for Manual Tilt) | |
| 7. Battery and power source system | - | |
| 8. Power source voltage of power steering ECU assembly | TERMINALS OF ECU | |
| 9. Harness and connector (Between power steering ECU and power steering converter) | - | |
| 10. Power steering ECU assembly | POWER STEERING ECU | |
| 11. 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) | - | |
| Steering effort differs between right and left, or is uneven | 1. Power steering ECU assembly (Steering center point (zero point) is not recorded correctly) | POWER STEERING ECU |
| 2. Front tires (Improperly inflated, unevenly worn) | INSPECTION | |
| 3. Front wheel alignment (Incorrect) | FRONT WHEEL ALIGNMENT | |
| 4. Front suspension (Lower ball joint) | FRONT LOWER BALL JOINT | |
| 5. Power steering link assembly (Torque sensor, motor rotation angle sensor, power steering motor) | POWER STEERING GEAR | |
| 6. Steering column assembly (for power tilt and power telescopic) | STEERING COLUMN ASSEMBLY (for Power Tilt and Power Telescopic) | |
| 7. Steering column assembly (for manual tilt) | STEERING COLUMN ASSEMBLY (for Manual Tilt) | |
| 8. Power steering ECU 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 | 1. Front suspension (Lower ball joint) | FRONT LOWER BALL JOINT |
| 2. Speed sensor | FRONT SPEED SENSOR | |
| 3. Skid control ECU | SKID CONTROL ECU | |
| 4. Power steering link assembly (Torque sensor, motor rotation angle sensor, power steering motor) | POWER STEERING GEAR | |
| 5. Power steering ECU assembly | POWER STEERING ECU | |
| 6. CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Friction sounds occur when turning the steering wheel during low speed driving | 1. Power steering link assembly (Power steering motor) | POWER STEERING GEAR |
| 2. Steering column assembly (for power tilt and power telescopic) | STEERING COLUMN ASSEMBLY (for Power Tilt and Power Telescopic) | |
| 3. Steering column assembly (for manual tilt) | STEERING COLUMN ASSEMBLY (for Manual Tilt) | |
| High-pitched sounds (squeaking) occur when turning the steering wheel slowly with the vehicle stopped | Power steering link assembly (Power steering motor) | POWER STEERING GEAR |
| The steering wheel vibrates and noise occurs when turning the steering wheel with the vehicle stopped | 1. Power steering link assembly (Power steering motor) | POWER STEERING GEAR |
| 2. Steering column assembly (for power tilt and power telescopic) | STEERING COLUMN ASSEMBLY (for Power Tilt and Power Telescopic) | |
| 3. Steering column assembly (for manual tilt) | STEERING COLUMN ASSEMBLY (for Manual Tilt) | |
| P/S warning light in the combination meter is always on | 1. IG power source circuit | IG POWER SOURCE CIRCUIT |
| 2. Combination meter | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 3. Power steering ECU assembly | POWER STEERING ECU |