Lights On Chime

The radio activates the lights on audible warning as requested by the IPC. The IPC sends a class 2 message to the radio indicating the chime frequency (fast rate) and duration (continuous). The lights on warning sounds when the following occurs:
^ The IPC determines that the ignition key has been removed from the ignition lock cylinder.
^ The body control module (BCM) determines that the driver's door is open (signal circuit is low). The IPC receives a class 2 message from the BCM indicating the door ajar status.
^ The IPC determines that the headlamp switch is in the park or head position.