Steering Angle Sensor: Description and Operation

Steering Wheel Rotation Sensor
The steering wheel rotation sensor measures the rate of rotation of the steering wheel by monitoring the steering wheel rotation ring as it passes through the sensor gap. The steering wheel rotation sensor uses two signal lines to transmit information to the traction control module: whether the steering wheel is being turned left or right and how tear it is being turned. The steering wheel rotation sensor cannot automatically indicate the position of the steering wheel relative to straight ahead. The Advance Trac/IVD system must learn this position by comparing the steering wheel position to other input signals and stores them to determine a relative straight ahead position. The Advance Trac/IVD system confirms this position and modifies it as necessary during every new driving cycle.