Theory Of Operation
WARNING: This page is about a different car, the 2022 Chrysler Voyager and 2022 Chrysler Pacifica. However, it is still accessible from the selected car via links, so may be relevant.
The External Disc Module (EDM) receives a Fused B+ power supply from the Power Distribution Center (PDC). When the ignition is turned on, the Body Control Module (BCM) transmits a wake up signal over the CAN IHS bus to the EDM. The EDM sends audio signals to the Radio.
For more details on the description and operation of the EDM. Refer to DESCRIPTION AND OPERATION .