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Home >> Ford >> 2003 >> Focus SVT, 2D Hatchback >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Control System - Traction Control System & Stability Assist System >> Diagnosis And Testing >> Anti-Lock Control - Stability Assist >> Principles Of Operation >> Steering Wheel Rotation Sensor
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Steering Wheel Rotation Sensor

The steering wheel rotation sensor scans the steering wheel rotation sensor ring in the steering column which has holes punched in it at regular intervals. The steering wheel rotation sensor is hard wired to the stability assist module. The sensor signal is then converted back to a value sensing whether the steering wheel is being turned left or right and how far it is being turned. The steering wheel rotation sensor does not tell the stability assist module the position of the steering wheel relative to straight-ahead. The stability assist system learns this by comparing the steering wheel position with other signals and remembering the position it has learned. The stability assist system confirms this position and modifies it as necessary during every new driving cycle of the vehicle.