Battery Guard
Battery Guard can control modules and systems that do not have Class 2 serial communications.The Body Control Module (BCM) provides power regulation through the use of the battery guard relay to the following components:
^ Radio Receiver.
^ Radio Interface Module (RIM)
^ Fuel Filler Door Relay coil
^ Trunk Release Relay coil
^ Cellular Phone (Dealer Installed)
The battery guard relay supplies the above components with power whenever the BCM is awake and for 15 minutes after the ignition transitions to the LOCK position.