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 LH Multifunction Switch provides Flash to Pass/Optical Horn Switch signals to the Steering Column Control Module (SCCM). The SCCM sends the requested signal to the Body Control Module (BCM) through the LIN 3 Bus circuit.