POWER STEERING SYSTEM PROBLEM SYMPTOMS TABLE

Tech Tips


  • Use the table below to help determine the cause of 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 Link
Heavy steering Front tires (improperly inflated, unevenly worn)

Click here

Front wheel alignment (incorrect)

Click here

Front suspension (Lower ball joint)

Click here

Steering gear assembly

Click here

Auxiliary battery and power source circuit

Click here

Power source voltage of power steering ECU assembly

Click here

Power steering ECU assembly (for LHD)

Click here

Power steering ECU assembly (for RHD)

Click here

Vehicle condition (Steering wheel is turned from left to right repeatedly with vehicle stopped or heavy load is continuously applied to vehicle)

Click here

Steering effort differs between right and left or is uneven Rotation angle sensor initialization and torque sensor zero point calibration incomplete

Click here

Front tires (improperly inflated, unevenly worn)

Click here

Front wheel alignment (incorrect)

Click here

Front suspension (Lower ball joint)

Click here

Steering gear assembly

Click here

Torque sensor (Electric power steering column sub-assembly)

Click here

Electric power steering column sub-assembly

Click here

Power steering ECU assembly (for LHD)

Click here

Power steering ECU assembly (for RHD)

Click here

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 booster with master cylinder assembly) (for LHD)

Click here

Skid control ECU (Brake booster with master cylinder assembly) (for RHD)

Click here

Speed sensor

Click here

Torque sensor (Electric power steering column sub-assembly)

Click here

Power steering ECU assembly (for LHD)

Click here

Power steering ECU assembly (for RHD)

Click here

CAN communication system

Click here

Friction sounds occur when turning steering wheel during low speed driving Power steering motor (Power steering ECU assembly) (for LHD)

Click here

Power steering motor (Power steering ECU assembly) (for RHD)

Click here

Electric power steering column sub-assembly

Click here

Spiral with cable sensor sub-assembly

Click here

Steering column cover contacting steering wheel assembly

Click here

High-pitched sound (squeaking) occurs when turning steering wheel slowly with vehicle stopped Power steering motor (Power steering ECU assembly) (for LHD)

Click here

Power steering motor (Power steering ECU assembly) (for RHD)

Click here

Steering wheel installation (incorrect)

Click here

Steering wheel vibrates and noise occurs when turning steering wheel from lock to lock Power steering motor (Power steering ECU assembly) (for LHD)

Click here

Power steering motor (Power steering ECU assembly) (for RHD)

Click here

Electric power steering column sub-assembly

Click here

Steering wheel installation (incorrect)

Click here

DTCs cannot be output (terminals TC and CG of the DLC3 are connected) TC and CG terminal circuit

Click here

IG power source circuit

Click here

Meter / gauge system

Click here

EPS warning light remains on EPS warning light circuit

Click here