Theory Of Operation

The Body Control Module (BCM) receives the network communication message from the Radio Frequency (RF Hub) Module indicating run or accessory operation is requested. The BCM provides a voltage output through the Accessory Delay 1 Relay Control circuit to the coil side of the RUN/ACCESSORY 1 Relay in the Power Distribution Center (PDC) Assembly. A ground path for the RUN/ACCESSORY 1 Relay is provided through the PDC Assembly.