Stratus L4-2.0L VIN C (1997)
Audible Warning Device: Description and Operation
CIRCUIT OPERATION
Exterior Lamp-ON Warning
The exterior lamp ON chime is used to indicate to the operator that the lamps are ON with the drivers door OPEN and the key removed from the
ignition. The Body Control Module (BCM) uses information from circuit L7 to determine if the lamps are ON, and circuit G75 for drivers door
ajar. The chime function will not operate when the headlamp delay feature is active.
Key-In Ignition Warning
The Key-In chime is used to indicate to the operator that the key is in the ignition with the driver's door OPEN. If the key is in the ignition, a
ground path is completed from the G26 circuit at the Body Control Module (BCM), through the CLOSED switch, to the Z14 circuit. The Z1
circuit is the ground circuit and terminates at the body ground located at the left kick panel.
When the driver's door is open the normally OPEN door ajar switch CLOSES completing a path to ground on circuit G75. The BCM processes
this information and turns on the chime.
Funeral Mode Display Illumination
The Body Control Module (BCM) controls the intensity of the instrument cluster vacuum florescent displays. This is accomplished using the input
from the headlamp dimmer switch on circuit E19. When the exterior lamps are ON, and the dimmer switch is moved to the high end of it's travel,
the BCM sends a message over the CCD Bus to the instrument cluster for full lamp intensity.