Steering Wheel Rotation Sensor

WARNING: This page is about a different car, the 2016 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

The steering wheel rotation sensor is part of the SASM and clockspring assembly. The steering wheel rotation speed, angle and direction of travel is derived based on the position of the steering wheel position sensor and is sent to the ABS module over the HS-CAN2.

Information from the wheel speed sensors, PSCM and RCM are used by the ABS module to determine steering wheel angle when the vehicle is driven after initial start up. The ABS module uses the information received to calculate the steering center and save the information in memory. Then, using the information provided from the PSCM along with the saved center data, the ABS module determines the steering angle. The ABS module must re-learn the steering center whenever power is lost, for example during service when the battery is disconnected. To re-learn the steering center, the vehicle must be driven over 20 km/h (12 mph) for at least 1 minute on a fairly straight road.