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Home >> Scion >> 2014 >> iQ Base >> Repair and Diagnosis (Single Page) >> Steering >> Power Steering >> Power Steering System (Diagnostics - Introduction) >> Power Steering System >> Problem Symptoms Table [05/2013 - ] >> Problem Symptoms Table [05/2013 - ]

Problem Symptoms Table [05/2013 - ]

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POWER STEERING SYSTEM

Symptom Suspected Area See Service Information
Heavy steering Front tires (improperly inflated, unevenly worn) Refer to INSPECTION [05/2013 - ]
Front wheel alignment (incorrect) Refer to ADJUSTMENT [05/2013 - ]
Front lower suspension arm (lower ball joint) Refer to INSPECTION [05/2013 - ]
Steering column assembly Refer to REMOVAL [05/2013 - ]
Battery and power source system -
Power source voltage of steering column assembly (Power steering ECU) Refer to TERMINALS OF ECU [05/2013 - ] 
Steering effort differs between right and left, or steering effort is uneven. Front tires (improperly inflated, unevenly worn) Refer to INSPECTION [05/2013 - ]
Front wheel alignment (incorrect) Refer to ADJUSTMENT [05/2013 - ]
Front lower suspension arm (lower ball joint) Refer to INSPECTION [05/2013 - ]
Steering gear Refer to INSPECTION [05/2013 - ]
Steering column assembly Refer to REMOVAL [05/2013 - ]
While driving, steering effort does not change in accordance with vehicle speed or the steering wheel does not return properly. Front lower suspension arm (lower ball joint) Refer to INSPECTION [05/2013 - ]
Steering column assembly Refer to REMOVAL [05/2013 - ]
A knocking (or cranking) sound occurs when turning the steering wheel back and forth while power steering is in operation. Front lower suspension arm (lower ball joint) Refer to INSPECTION [05/2013 - ]
Steering intermediate shaft Refer to DISASSEMBLY [05/2013 - ] - Step 1
Steering column assembly Refer to REMOVAL [05/2013 - ]
Noise occurs when turning the steering wheel during low-speed driving. Steering column assembly Refer to REMOVAL [05/2013 - ]
Friction occurs when turning the steering wheel during low-speed driving. Steering column assembly Refer to REMOVAL [05/2013 - ]
A high-pitched sound (squeaking) occurs when turning the steering wheel slowly with the vehicle stopped. Steering column assembly Refer to REMOVAL [05/2013 - ]
The steering wheel vibrates and noise occurs when turning the steering wheel from lock to lock with the vehicle stopped. Steering gear Refer to INSPECTION [05/2013 - ]
Steering column assembly Refer to REMOVAL [05/2013 - ]
EPS warning is always indicated on the combination meter. Power source voltage of steering column assembly (Power steering ECU) Refer to TERMINALS OF ECU [05/2013 - ] 
EPS warning light circuit Refer to EPS Warning Light Circuit
Steering column assembly Refer to REMOVAL [05/2013 - ]