Grand Cherokee 2WD L6-4.0L VIN S (1997)
Remote Switch: Description and Operation
CIRCUIT OPERATION
Premium radios have remote volume, seek, and preset switches on the steering wheel. The remote switches connect to the Body Control Module
(BCM) on circuit 709 and ground on circuit Z2. Each switch is wired in parallel. A resistor in series between each switch and ground circuit Z2
determines the signal sensed by the BCM on circuit 709.
After sensing a request from the radio remote switches, the BCM signals the radio over the CCD bus to make the requested selection.
