The audible warnings alert the driver of a system concern or a critical vehicle condition. The radio generates the audible warnings through the left front speaker. The radio receives audible warning requests via the class 2 serial data line from
the IPC or body control module (BCM). If the radio receives multiple audible warning requests, the warning with the highest priority sounds first. The following lists the audible warning priority and the pulse rate:
- Fast rate chime--200 pulses per minute
- Medium rate chime--150 pulses per minute
- Slow rate chime--50 pulses per minute
- Single chime
Fasten Safety Belt Warning
The radio activates the fasten safety belt audible warning as requested by the IPC. The IPC sends a class 2 message to the radio indicating the chime frequency, slow rate and duration (5 pulses). The fasten safety belt warning sounds and
the fasten safety belt indicator illuminates when the following occurs:
| • | The ignition switch transitions to ON. |
| • | The inflatable restraint sensing and diagnostic module (SDM) detects that the driver's seat belt is not buckled, signal is low. The IPC receives a class 2 message from the SDM indicating the driver's seat belt status. |
If the seat belt is buckled when the ignition is turned on, the chime does not sound. If the seat belt is buckled while the chime is sounding, the chime stops. If the seat belt is unbuckled after the initial transition to ON, the chime does not sound.
Headlamps On Warning
The radio activates the headlamps on warning as requested by the body control module (BCM). The BCM sends a class 2 message to the radio indicating the chime frequency, fast rate and duration, continuous. The headlamps on warning sounds when the
following occurs:
| • | The BCM determines that the driver's door is open, signal is low. |
| • | The BCM determines that the headlamp switch is in the park or head position. |
Key-In-Ignition Warning
The radio activates the key-in-ignition audible warning as requested by the BCM. The BCM sends a class 2 message to the radio indicating the chime frequency, medium rate and duration, continuous. The key-in-ignition warning sounds when the following
occurs:
| • | The ignition switch is OFF. |
| • | The body control module (BCM) determines that the driver's door is open, signal is low. |
| • | The BCM determines that the key-in-ignition switch is closed, signal is low. |
Turn Signal Reminder
The radio activates the turn signal warning as requested by the IPC. The IPC sends a class 2 message to the radio indicating the chime frequency, medium rate and duration, continuous. The turn signal warning sounds when the following occurs:
| • | The ignition switch is in the RUN position. |
| • | The turn signal switch is in either turn position, sensing, within 1 second, an open to B+ transition in the turn signal control circuit, left or right turn. |
| • | The vehicle has traveled a distance of 1.2 km (¾ mi) by counting pulses on the vehicle speed input circuit. |
The IPC turns OFF the turn signal reminder when either the ignition switch is turned to the OFF position, or the turn signal switch returns to the OFF position, sensing, within 1 second, no transitions from open to B+ in either of the turn signal
control circuits, left turn or right turn.
Additional Chimes
The following chimes will turn ON when an associated indicator/message turns ON in the IPC/DIC:
| • | Battery/Charge indicator |
| • | Change Engine Oil indicator |
| • | Hot Coolant Temp indicator |
| • | Low Brake Fluid indicator |
| • | Low Oil Pressure indicator |
| • | Low Tire Pressure indicator/reset |
| • | Low Washer Fluid indicator |
| • | MIL (Service Engine Soon) indicator |
| • | Park Lamp Out indicator |
| • | Rear Hatch Ajar indicator |
| • | Service Traction System indicator |
| • | Service Vehicle Soon indicator |
For a description of an indicator refer to
Indicator/Warning Message Description and Operation
.
For diagnosis of an indicator refer to
Symptoms - Displays and Gages
.
