The Body Control Module (BCM) controls the audible warnings.
Refer to
Body Control System Description
in Body Control System for more information regarding the BCM.
Diagnostic Trouble Codes (DTCs)
The BCM may set these DTCs related to audible warnings:
| • | DTC U1096 Loss of Communications with IPC |
| • | DTC U1255 Serial Data Line Malfunction |
| • | DTC U1300 Class 2 Short to Ground |
| • | DTC U1301 Class 2 Short to Battery |
Refer to
Body Control Module Diagnostic Information
for diagnostic procedures regarding these DTCs.
Audible Warnings Description
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
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 chimes per minute. |
| • | Fasten belts indicator control:
A visual warning intended to remind the driver that the driver's seat
belt is unfastened. |
| • | Parking brake reminder:
An audible
warning intended to remind the driver that the parking brake has been left
applied with the transaxle shifted out of PARK. The BCM sounds the chime
for his reminder at a rate of 200 chimes per minute. |
| | 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 (¾ mile).
The BCM sounds the chime for this reminder at a variable rate (in unison
with the turn lamps on) of 90 chimes per minute. |
| • | Headlamps ON reminder:
An audible
waring 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 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. The BCM sounds the chime for
this remainder at a rate of 200 chimes per minute. |
| • | Feature customization and diagnostics feedback:
An audible feedback used when changing feature customization
modes. Also used by service technicians during the BCM diagnostics. The
BCM sounds the chime during the feature customization, and also during
diagnostics. Refer to Body Control Module (BCM) for additional information. |
Key In Ignition Reminder
The BCM sounds key in ignition reminder when these conditions are met:
| • | The driver's door is open (ground signal in circuit 49). |
| • | The key is fully inserted in the ignition cylinder (ground signal
in circuit 80). |
| • | The ignition switch is in the off or accessory position. |
Fasten Seat Belt Reminder
The BCM sounds the fasten seat belt reminder ON for 6 (+/-2)
seconds when these conditions are met:
| • | The ignition switch is turned from the off to the on position,
or from the start to the on position. |
| • | The driver's seat belt is unfastened (ground signal in circuit
238). |
If the driver's seat belt is fastened, then unfastened within 6 seconds
chime period, the BCM stops the chime while the driver's seat belt is fastened.
The BCM resumes the chime for reminder of 6 second period if the driver's
seat belt is unfastened.
Fasten Belt Indicator Control
The BCM sends a request to the instrument cluster via Class II serial
data link to turn on the fasten belts indicator for 75 (+/- 7.5) seconds
when these conditions are met:
| • | The ignition switch is on. |
| • | The driver's seat belt is unfastened (ground signal in circuit
238). |
If the driver's seat belt is fastened during the 75 second period, he
BCM sends a request to the instrument cluster via Class II serial data link
to turn off the fasten belts indicator. The BCM sends a request to the instrument
cluster to turn on the fasten belts indicator for 75 (+/- 7.5) seconds (repeating
this sequence) if the driver's seat belt is unfastened during the same ignition
cycle. Note: The instrument cluster turns on steadily the fasten belts
indicator lamp during the first 20 seconds, then it flashes.
Parking Brake Reminder
The BCM sounds the parking brake reminder when these conditions are
met:
| • | The ignition switch is on. |
| • | The parking brake switch is closed, sending a ground signal in
circuit 233; thus indicating that the parking brake is set (applied). |
| • | The transaxle is shifted out of PARK or NEUTRAL by sensing a transaxle
range PRNDL signal via the Class II serial data link |
Turn Signal Reminder
The BCM sounds the turn signal reminder once per each flash of the turn
signal lights when these conditions are met:
| • | The ignition switch is on. |
| • | The turn signal switch is in either the left or right turn position
(sensing, in the past two seconds, a turn signal on signal via the Class II
serial data link.) |
| • | The vehicle has traveled a distance of 1.2 km (¾ mile)
by sensing vehicle speed signals via the Class II serial data link. |
The BCM keeps active the turn signal reminder until one of these conditions
is met:
| • | The ignition switch is off. |
| • | The turn signal switch returns to the off position (sensing, in
the past two seconds, no turn signal signals via the Class II serial data
link.) |
Low Fuel Reminder
The BCM sounds the low fuel reminder when receiving a chime request
message from the instrument cluster via the Class II serial data link. The
chime sounds once per instrument cluster chime request. The instrument cluster
repeats this request every ten minutes for as long as the Low Fuel indicator
lamp is on.
Headlamps On Reminder
The BCM sounds the headlamps on reminder when these conditions are met:
| • | The driver's door is open (ground signal in circuit 49) |
| • | The headlamp switch is in either PARK or HEAD position (open in
circuit 1872) |
| • | The ignition switch is in the off or accessory position. |
Key in Ignition Switch Input
The 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 the key is removed from the ignition
switch. The BCM uses this input for the operation of the key in ignition
reminder, lockout prevention, exit lighting, among other BCM-related features.
The ignition key alarm switch receives ground through circuit 1550.
Driver's Door Ajar Switch Input
The 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 49. Refer to
Interior Lights Circuit Description
in Lighting Systems for more information
regarding the driver's door lock ajar switch input.
Driver Seat Belt Switch Input
The 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 indicator lamp and chime reminder.
Park Brake Input
The BCM determines when the parking brake is applied through the park
brake indicator switch. When the parking brake is released, the park brake
indicator switch opens. The park brake indicator switch closes when the
parking brake is applied. This causes the switch to ground circuit 80. The
BCM uses this input for the operation of the parking brake reminder.
Park Lamp Off Input
The BCM senses a voltage signal through the park lights off input (circuit
1872) when the headlamp switch is in the PARK or HEAD position. The BCM uses
this input for the operation of the headlamps on reminder.
Class II Serial Data Link
The BCM determines when the turn signal switch is on, and the vehicle
traveled distance via the Class II serial data link. The BCM uses this information
to activate the turn signal reminder.
The BCM determines when the transaxle is shifted out of PARK via the
Class II serial data link. The BCM uses this information to activate the park
brake reminder.
The instrument cluster uses the Class II serial data link when requesting
the BCM to sound the low fuel reminder.
The BCM uses the Class II serial data link when requesting the instrument
cluster to turn on the Fasten Belts indicator lamp.
Refer to
Body Control System Description
in Body Control System for more information.
