PROBLEM SYMPTOMS TABLE
HINT:
Symptom | Suspected Area | Link |
---|---|---|
Heavy steering | Front tires (improperly inflated, unevenly worn) |
|
Front wheel alignment (incorrect) |
| |
Front suspension (Lower ball joint) |
| |
Steering gear assembly |
| |
Battery and power source circuit |
| |
Power source voltage of power steering ECU assembly |
| |
Power steering ECU assembly |
| |
Vehicle condition (Steering wheel is turned from left to right repeatedly with vehicle stopped or heavy load is continuously applied to vehicle) |
| |
Steering effort differs between right and left or is uneven | Rotation angle sensor initialization and torque sensor zero point calibration incomplete |
|
Front tires (improperly inflated, unevenly worn) |
| |
Front wheel alignment (incorrect) |
| |
Front suspension (Lower ball joint) |
| |
Steering gear assembly |
| |
Torque sensor (Electric power steering column sub-assembly) |
| |
Electric power steering column sub-assembly |
| |
Power steering ECU assembly |
| |
While driving, steering effort does not change in accordance with vehicle speed, or steering wheel does not return to its centered position easily | Skid control ECU (brake actuator assembly) |
|
Speed sensor |
| |
Torque sensor (Electric power steering column sub-assembly) |
| |
Power steering ECU assembly |
| |
CAN communication system |
| |
Friction sounds occur when turning steering wheel during low speed driving | Power steering motor (Power steering ECU assembly) |
|
Electric power steering column sub-assembly |
| |
Spiral cable with sensor sub-assembly |
| |
Steering column cover contacting steering wheel assembly |
| |
High-pitched sound (squeaking) occurs when turning steering wheel slowly with vehicle stopped | Power steering motor (Power steering ECU assembly) |
|
Steering wheel installation (incorrect) |
| |
Steering wheel vibrates and noise occurs when turning steering wheel from lock to lock | Power steering motor (Power steering ECU assembly) |
|
Electric power steering column sub-assembly |
| |
Steering wheel installation (incorrect) |
|
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