Grand Prix V6-191 3.1L VIN M SFI (1998)
Audible Warning Device: Description and Operation
Key In Ignition Switch Input
The Body Control Module (BCM) interfaces with the ignition key alarm switch. The ignition key alarm switch grounds circuit 80 when the key is fully
inserted in the ignition switch. The switch opens when key is removed from the ignition switch. The BCM uses this input for the operation of the key in
ignition reminder. The ignition key alarm switch receives ground through circuit 1550.
Driver's Door Alarm Switch Input
The Body Control Module (BCM) uses this input for the operation of the key in ignition reminder and headlamps on reminder. When the driver's door is
open, the door lock switch grounds circuit 159. Refer to Body Control Module for more information regarding the driver's door lock ajar switch input.
See: Body and Frame/Body Control Systems/Body Control Module
Driver Seat Belt Switch Input
The Body Control Module (BCM) determines when the driver's seat belt is fastened through the seat belt switch. The seat belt switch opens when the
driver's seat belt is fastened. When the driver's seat belt is unfastened, the seat belt switch closes. This causes the switch to ground circuit 238. The BCM
uses this input for the operation of the fasten belts lamp indicator and chime reminder.
Left/Right Turn Signal Input
The Body Control Module (BCM) determines that the turn signal switch is on by sensing a transition from open to B+ in either circuit 14 (left) or 15
(right). The BCM determines that the turn signal switch is off by sensing a constant open or B+ in either circuit 14 (left turn signal) or 15 (right turn
signal). The BCM uses this input for the operation of the turn signal reminder.
Vehicle Speed Input
The Body Control Module (BCM) determines the vehicle traveled distance by interfacing with the vehicle speed circuit 389. This circuit grounds 4000
times per 1.6 km (one mile) traveled. The BCM uses this input for the operation of the turn signal reminder.
Auxiliary Chime Input
The Driver Information Display (DID) interfaces with the BCM to sound the chime when a vehicle door is open. For as long as vehicle door remains
open, the DID grounds the auxiliary chime input (circuit 653). When circuit 653 is grounded for more than 450 ms, the BCM to sound the chime four
times.
The trip calculator interfaces with the BCM to sound the chime when the trip calculator is displaying a warning message. Upon such occurrence, the trip
calculator grounds the auxiliary chime input (circuit 653) for <450 ms. This action causes the BCM to sound the chime once.
Park Lights Out Input
The Body Control Module (BCM) senses a voltage signal through the park lights off input (circuit 1872) when the headlamp switch is in the off position.
This circuit opens when the headlamp switch is in the PARK or HEAD position. The BCM uses this input for the operation of the headlamps on
reminder.
Fasten Belt Indicator Control Output
The Body Control Module (BCM) uses this output for the operation of the fasten belts indicator. The BCM applies voltage to circuit 529, turning on the
fasten belt indicator. The fasten belts indicator is grounded at all times through circuit 1450.
Body Control Module (BCM)
The Body Control Module (BCM) controls these reminders:
^
Key in ignition reminder: An audible warning intended to remind the driver that the key has been left in the ignition cylinder. The BCM sounds the
chime for this reminder at a rate of 150 (+/- 15) chimes per minute.
^
Fasten seat belt reminder: An audible warning intended to remind the driver at the beginning of the driving cycle that the driver's seat belt is
unfastened. The BCM sounds the chime for this reminder at a rate of 50 (+/- 5) chimes per minute.
^
Fasten belts indicator control: A visual warning intended to remind the driver that the driver's seat belt is unfastened.
^
The signal reminder: An audible warning intended to remind the driver that the turn signal has been left on while the vehicle has traveled over 1.2
km (3/4 mile). The BCM sounds the chime for this reminder at a variable rate (in unison with turn lamps on) of 50 chimes per minute.
^
Driver information display reminder: An audible warning intended to attract the driver's attention to the Driver Information Display (DID) when
opening a vehicle door. The BCM sounds the chime four times at a rate of 120 chimes per minute for this reminder.
^
Trip calculator reminder: An audible warning intended to attract the driver's attention to the trip calculator upon the occurrence of a trip calculator
warning message. The BCM sounds the chime for this reminder once per trip calculator message.
^
Headlamps ON reminder: An audible warning intended to remind the driver that the headlamps have been left on. The BCM sounds the chime for
this reminder at a rate of 200 (+/- 20) chimes per minute.
^
Last door closed locking confirmation: An audible warning intended to provide the driver feedback that the last door closed locking feature is
active.
^
Feature customization and diagnostics feedback: An audible feedback used when changing feature customization modes. Also used by service
technicians during BCM diagnostics. The BCM sounds the chime and turns on/off the fasten belts indicator during feature customization, and also
during diagnostics. Refer to Body Control Module for additional information. See: Body and Frame/Body Control Systems/Body Control
Module
Driver Information Display Reminder
The Body Control Module (BCM) sounds the Driver Information Display (DID) reminder when receiving a ground signal from the DID in circuit 653.
The chime sounds four times at a rate of 120 chimes per minute.
Fasten Belts Indicator Control
