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Home >> Jeep >> 2019 >> Grand Cherokee Laredo, AWD, Automatic T/Case Control >> Repair and Diagnosis >> Engine Performance >> System >> 3.6L - DTCS P04D0 To P063A >> DTC Troubleshooting >> P0581-Speed Control Switch 1 Circuit High >> Component Functional Description-Multiplex (MUX) Switch

Component Functional Description-Multiplex (MUX) Switch

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.