Test I: Steering System Noise

Pinpoint Test I: Steering System Noise

Normal Operation
The electrical power steering system provides power steering assist to the driver by replacing the conventional hydraulic valve system with an electric motor coupled to the steering gear. The motor is controlled by an electronic control unit that senses the steering effort through the use of a torque sensor mounted between the steering column shaft and the steering gear. Steering assist is provided in proportion to the steering input effort and vehicle speed.

I1-I2:

Possible Causes
^ Loose or damaged suspension component(s)
^ Steering column
^ Steering column boot bushing
^ Intermediate shaft
^ Steering gear