Rack & Pinion Power Steering System: Column: Operation
Turning of the steering wheel is transferred through the steering column, upper and lower couplings to the power steering gear. The gear then moves the steering knuckles, steering the vehicle.
The steering column has an anti-theft provision. With the key/lock cylinder turned to the LOCK position, and the key removed, the steering shaft (and steering wheel) cannot be turned more than 180 degrees before locking.