Theory Of Operation

The Steering Column Control Module (SCCM) is located near the top of the Steering Column underneath the Steering Wheel. The SCCM includes the Clockspring, the Multi-Function Switch and a LIN/CAN C Gateway. LIN Bus messages received by the LIN/CAN C Gateway are broadcast over the CAN C Bus to the appropriate modules.

The Right Hand (RH) Multifunction switch provides a Rear Wiper Washer Switch signal to the Steering Column Control Module (SCCM). The SCCM sends the Rear Wiper Washer Switch signal to the Body Control Module (BCM) through the LIN 3 Bus circuit. When the BCM receives the Rear Wiper Washer Switch signal from the SCCM, the BCM activates the Rear Wiper Washer Pump.