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. On vehicles equipped with IVD the steering wheel rotation sensor is hard-wired to the ABS module and sends the information about whether the steering wheel is being turned left or right and how far it is being turned to the ABS module. The ABS module then sends the information to the power steering control module along the HS-CAN. On vehicles without IVD, the steering wheel rotation sensor is hard-wired to the power steering control module instead of the ABS module. For information on the power steering control module, refer to STEERING SYSTEM - GENERAL INFORMATION article.

The rotation sensor receives power from the BJB and is grounded through the ABS module (on vehicles with IVD) or through the power steering control module (on vehicles without IVD).