Door Ajar Warning

The radio activates the door ajar audible warning as requested by the Body Control Module (BCM). The BCM sends a class 2 message to the radio indicating the chime frequency of a medium rate and at a continuous duration. The door ajar warning sounds and the door ajar indicator illuminates when the following occurs:

1. The body control module (BCM) determines that the driver's door is open and the signal circuit low. The IPC receives a message via class 2 from the BCM requesting illumination of the door ajar indicator.
2. The vehicle is not in park. The BCM receives a class 2 message from the PCM indicating the gear position.