Steering angle sensor

The steering angle sensor is installed in the steering column switch cluster (SZL). The steering angle sensor measures the steering wheel angle optically and without contact. The steering angle sensor is fitted on the printed circuit board with the evaluation electronics. The steering angle sensor consists of the following components: encoded disc and optical sensor. The encoded disc is connected to the steering wheel via the coil spring cassette. When the steering wheel is moved, the encoded disc moves within the optical sensor. There are various line patterns for evaluation on the encoded disc.

Fig 1: Identifying Steering Column Switch Cluster (SZL) And Optical Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

The SZL is connected via the chassis CAN (F-CAN) with the DSC control unit.