Multifunction Switch and Wiper/Washer Switch
The multifunction switch and wiper/washer switches are mounted directly to the Steering Column Control Module (SCCM) and transfer driver inputs to the SCCM . The multifunction switch controls turn signal, headlamp low/high beam and headlamp dimmer/flash-to-pass while the wiper/washer switch controls the front windshield wipers/washers and (if equipped) the rear window wiper/washer. The SCCM receives the switch information as ground or voltage inputs then sends messages on the High Speed Controller Area Network (HS-CAN) or the Local Interconnect Network (LIN) to the appropriate module.
The high beam headlamps and flash-to-pass messages are sent to the Body Control Module (BCM) over the HS-CAN .
The turn signal messages are sent to the BCM , Instrument Panel Cluster (IPC), Parking Aid Module (PAM) (if equipped) and Cruise-Control Module (C-CM) (if equipped) over the HS-CAN .
The windshield wiper messages are sent to the wiper motor internal module over the LIN.