Audible Warning Device: Description and Operation

The cluster monitors the Programmable Communication Interface (PCI) data bus for requests from various modules to display messages and under certain conditions sound a chime or series or chimes.
The chime system provides the Driver with warning chimes for:

- Seat Belt
- Exterior Lights On
- Key-In Ignition
- Key-In Accessory
- Engine Temperature Critical
- Low Washer Fluid
- Turn Signals On
- Low Oil Pressure
- Any Warning Lamp Announcement
The output sound intensity of the chime is approximately 62 to 78 decibels.

CHIME PRIORITY
The following list indicates the priority of the chime when more than one chime is active at the same time:
- Seat Belt Warning
- Door Ajar
- Turn Signal On
- Chime Request
- Power Liftgate
The cluster is responsible to set priority on all warning lamp announcement chimes.

CHIME ON CONDITIONS

DRIVER'S SEAT BELT UNBUCKLED
There are two different Fasten Seat Belt Reminder announcements incorporated into the cluster's logic, a Non-enhanced announcement and an Enhanced announcement.
When the Enhanced announcement is DISABLED:
- The cluster will chime five times (not greater than six seconds) and illuminate the Seat Belt Lamp after turning the ignition to the run/start position if the driver seat belt is unbuckled.

When the Enhanced announcement is ENABLED;
- The cluster will chime continuously at a slow rate for a period of 6 seconds and illuminate the Seat Belt Lamp after turning the ignition to the run/start position if the driver seat belt is unbuckled. After 6 seconds the chime will stop, but the Seat Belt Lamp will stay illuminated. If the ignition is in the run position for a period greater than 60 seconds, and the driver seat belt is unbuckled, and the vehicle's speed is greater than 5 mph (8 km/h) in a forward gear, the Enhanced Fasten Seat Belt Reminder will activate. This will cause the Seat Belt Lamp to blink and a slow continuous chime to sound for 5 seconds. After 5 seconds, the chime will stop, but the lamp will remain illuminated for an additional 3 seconds. The Enhanced Seat Belt Reminder cycles for a total of 12 times (96 seconds). After the 12th time, the Seat Belt Lamp will remain on without any chime. Buckling the driver seat belt at anytime will cancel the Fasten Seat Belt Reminder announcement.

EXTERIOR LIGHTS ON
Chime sounds if the ignition is in the lock position, the drivers door is ajar, and the headlight switch is in any position other than auto or off. The chime will continue to sound until anyone of the above conditions change or the battery protection time of 3 minutes expires.

KEY-IN IGNITION
Chime sounds if the key is in the ignition, the ignition is in the lock position, and the drivers door is ajar. The chime will continue to sound until anyone of the above conditions change or the battery protection time of 15 minutes expires.

TURN SIGNAL ON
If the BCM detects a turn signal input continuously for 1.0 mile (0.6 km) and the vehicle speed is greater than 15 mph (24 km/h), the cluster will chime continuously and display an EVIC warning message, until the turn signal is cancelled.

LOW OIL PRESSURE
Chime sounds when the engine is operating and the oil pressure drops below 4 psi/27.5 kPa.

ENGINE TEMPERATURE CRITICAL
Chime sounds when the engine is operating and the coolant temperature exceeds 252° F (122° C). The chime is continuous at 257° F (125° C) and will chime for 4 minutes and stop if the temperature drops below 243° F (117° C).

LOW WASHER FLUID
Chime sounds when the washer fluid drops below a specific level.

WARNING LAMP ANNOUNCEMENT
Chime sounds to alert the driver to scan the EVIC (in the cluster) to see which EVIC warning message displayed. The door/liftgate ajar warning message will display (without a chime) if the vehicle is running and a door or the liftgate is open. A chime will sound if the door or liftgate is still open when vehicle speed is greater than 1 mph (1.6 km/h).

WARNING LAMP ANNOUNCEMENT

LOW FUEL LAMP
The cluster will sound a single chime, illuminate an amber lamp, and display an EVIC warning message after illuminating the indicator.

VOLT LAMP
The cluster will sound a single chime after illuminating the indicator.

OIL PRESSURE LAMP
The cluster will sound a single chime after illuminating the indicator above 450 rpm vehicle operation.

FASTEN SEAT BELT LAMP
There are two different Fasten Seat Belt Reminder announcements incorporated into the cluster's logic, a Non-enhanced announcement and an Enhanced announcement.
When the Enhanced announcement is DISABLED:
- The cluster will chime five times (not greater than six seconds) and illuminate the Seat Belt Lamp after turning the ignition to the run/start position if the driver seat belt is unbuckled.

When the Enhanced announcement is ENABLED:
- The cluster will chime continuously at a slow rate for a period of 6 seconds and illuminate the Seat Belt Lamp after turning the ignition to the run/start position if the driver seat belt is unbuckled. After 6 seconds the chime will stop, but the Seat Belt Lamp will stay illuminated. If the ignition is in the run position for a period greater than 60 seconds, and the driver seat belt is unbuckled, and the vehicle's speed is greater than 5 mph (8 km/h) in a forward gear, the Enhanced Fasten Seat Belt Reminder will activate. This will cause the Seat Belt Lamp to blink and a slow continuous chime to sound for 5 seconds. After 5 seconds, the chime will stop, but the lamp will remain illuminated for an additional 3 seconds. The Enhanced Seat Belt Reminder cycles for a total of 12 times (96 seconds). After the 12th time, the Seat Belt Lamp will remain on without any chime. Buckling the driver seat belt at anytime will cancel the Fasten Seat Belt Reminder announcement.

CHECK ENGINE LAMP
The cluster will sound a single chime after illuminating the indicator.

ENGINE TEMPERATURE LAMP
The cluster will sound a single chime when the indicator first illuminates at 252° F (122° C).

TRACTION CONTROL LAMP
The cluster will sound a chime, illuminate a red priority indicator lamp, and display an EVIC warning message after illuminating the indicator if the traction control system:
- is active.
- is suspended.
- needs service.
- is disabled by the driver.

TURN SIGNAL ON
If the BCM detects a turn signal input continuously for 1.0 mile (0.6 km) and the vehicle speed is greater than 15 mph (24 km/h), the cluster will chime continuously, illuminate an amber message indicator lamp, and display an EVIC warning message, until the turn signal is cancelled.

OTHER CHIME ON CONDITIONS

BULB CHECK
The chime will sound one time during bulb check.

BRAKE LAMP
The cluster will sound a chime, illuminate a red brake lamp, and display an EVIC warning message if the:
- Park brake is engaged and the vehicle speed exceeds 1 mph (1.61 km/h).
- Brake fluid is low.

MEMORY
The cluster will sound a chime and display an EVIC message when:
- Memory position #1 is set.
- Memory position #2 is set.
- The vehicle is out of park and a memory recall is selected.
- A memory recall is activated while the seat is in motion during another memory recall.

SERVICE
The cluster will sound a chime, illuminate an amber message indicator lamp, and display an EVIC message when the vehicle reaches the time to perform service.

REMOTE KEYLESS ENTRY
The cluster will sound a chime and display an EVIC message upon activation of:
- The key fob with a low battery.
- An invalid key fob and key.

SERVICE IMMOBILIZER
The cluster will sound a chime and display an EVIC message when there is a problem with the SKREEM Module.

POWER LIFTGATE
The cluster will sound a chime and display an EVIC message when there is a power liftgate actuation with the:
- Overhead console or RKE and the doors are locked.
- Overhead console and the vehicle is not in park.
- Overhead console or RKE and the temperature is too cold for actuation.
- Overhead console or RKE and the temperature is too hot for actuation.

TIRE PRESSURE MONITOR SYSTEM
The tire pressure monitoring system will request:
- A chime, illuminate an amber TPM lamp, and display an EVIC message when the system senses that there is a low tire pressure problem.
- Three fast chimes, illuminate an amber TPM lamp, and display an EVIC message when the system senses that one of the four original tires on the vehicle has been changed.
- A chime, illuminate an amber TPM lamp, and display an EVIC message if the system does not sense any tire pressure.
- A chime, illuminate an amber TPM lamp, and display an EVIC message when the tire system needs service.