Headlamps On Warning Chime

The headlamps on warning chime warns the headlamps are on when exiting the vehicle. When the driver exits the vehicle with the driver door ajar, the headlamp switch is in the PARK or HEADLAMP position and the ignition is OFF, the BCM  sends the headlamp switch status message to the IPC  through the GWM  to sound the headlamps on chime. The headlamps on chime sounds a 1-second chime tone continuously.

The IPC  receives the headlamp switch status message from the GWM  over the High Speed Controller Area Network 3 (HS3-CAN).

The GWM  receives the headlamp switch status from the BCM  over the High Speed Controller Area Network 1 (HS1-CAN).

When a chime request is received, the IPC  sends the IPC  chime request message to the ACM  and the audio DSP  to sound the chime.