POWER STEERING SYSTEM (for 2GR) 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	See page
Heavy steering	Front tires (improperly inflated, unevenly worn)	Click here
	Front wheel alignment (incorrect)	Click here
	Front suspension (lower ball joint)	Click here
	Electric power steering column sub-assembly	Click here
	Torque sensor (built into electric power steering column sub-assembly)	-
	Power steering motor assembly	-
	Speed sensor circuit	Click here
	Battery and power source system	-
	Power steering ECU assembly power source voltage and relay	Click here
	Power steering ECU assembly	Click here
Steering effort differs between turning right and left, or steering effort is uneven.	Front tires (improperly inflated, unevenly worn)	Click here
	Front wheel alignment (incorrect)	Click here
	Front suspension (lower ball joint)	Click here
	Steering link assembly	Click here
	Torque sensor (built into electric power steering column sub-assembly)	-
	Electric power steering column sub-assembly	Click here
	Power steering motor assembly	-
	Power steering ECU assembly	Click here
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)	Click here
	Speed sensor circuit	Click here
	Torque sensor (built into electric power steering column sub-assembly)	-
	Power steering motor assembly	-
	Power steering ECU assembly	Click here
	CAN communication system	Click here
A knocking (or clunking) sound occurs when turning the steering wheel back and forth while power steering is operating.	Front suspension (lower ball joint)	Click here
	Steering intermediate shaft	-
	Power steering ECU assembly	Click here
Noise occurs when turning the steering wheel during low-speed driving.	Steering link assembly	Click here
	Electric power steering column sub-assembly	Click here
Friction occurs when turning the steering wheel during low-speed driving.	Power steering motor assembly	-
	Electric power steering column sub-assembly	Click here
A high-pitched sound (squeaking) occurs when turning the steering wheel slowly with the vehicle stopped.	Power steering motor assembly	-
The steering wheel vibrates and noise occurs when turning the steering wheel from lock to lock with the vehicle stopped.	Steering link assembly	Click here
	Electric power steering column sub-assembly	Click here
P/S warning light remains on.	EPS warning light circuit	Click here