Component Functional Description-Multiplex (MUX) Switch
WARNING: This page is about a different car, the 2020 Jeep Renegade. However, it is still accessible from the selected car via links, so may be relevant.
Component Functional Operation: The Speed Control (S/C) Switch is a Smart Device that is supplied a Battery feed, ground and LIN Bus circuit. The S/C Switch has internal redundant MUX signals and a sensor ground circuit. When a S/C button is pressed the smart switch interprets the voltage signals to a S/C function. The S/C Switch sends a message with the function selected over the LIN Bus circuit to the Steering Column Control Module (SCCM) or Body Control Module (BCM) depending on the vehicle.