Battery Guard

The battery guard feature provides protection from excessive battery drain caused by high current loads being accidentally left on. This protection is accomplished by controlling the battery power to the selected modules after each ignition cycle. The Body Control Module (BCM) provides power regulation through the use of the battery guard relay to the following components:
^ The radio receiver
^ The Radio Interface Module (RIM)
^ The fuel filler door relay coil
^ The trunk release relay coil
^ The phone (dealer installed)

The battery guard relay supplies the above components with power whenever the BCM is awake (Controlled Power Mode) and for 15 minutes after the ignition transitions to the LOCK position (High Power Mode).