Door Ajar Warning

The radio activates the door ajar audible warning as requested by the IPC. The IPC receives class 2 messages from the Driver Door Module (DDM) indicating that the specific door ajar switch is active. The IPC sends a class 2 message to the radio indicating the chime frequency (medium rate) and duration (4 repetitions). The door ajar warning sounds and the door ajar indicator(s) illuminate when the following occurs:
^ The DDM determines that the driver's door is open or ajar (signal circuit is low).
^ The Passenger Door Module (PDM) detects that the passenger's door is open or ajar (signal circuit is low). The PDM sends a message to the DDM via the Simple Bus Interface (SBI) indicating that the door ajar switch is active.
^ The Right Rear Door Module (RRDM) detects that the right rear door is open or ajar (signal circuit is low). The RRDM sends a message to the DDM via the SBI indicating that the door ajar switch is active.
^ The Left Rear Door Module (LRDM) detects that the left rear door is open or ajar (signal circuit is low). The LRDM sends a message to the DDM via the SBI indicating that the door ajar switch is active.