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.
If the radio receives multiple audible warning requests, the warning with the highest
priority sounds first. On vehicles with RPO UQA the audio amplifier, instead of
the radio, generates the audible warnings and receives audible warnings requests
via the class 2 serial data line. Either the radio or the audio amplifier
is the chime producer. 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
Door Ajar Warning
The chime producer activates the door ajar audible warning as requested by
the instrument panel cluster (IPC). The IPC sends a class 2 message to the
chime producer indicating the chime duration (4 pulses). The door ajar
warning sounds and the appropriate DOOR AJAR indicator illuminates in the Driver
Information Center when the following occurs:
• | The body control module (BCM) determines that a door (driver door, passenger
door) is open and the signal circuit is low. The IPC receives a class 2
message from the BCM indicating the door ajar status. |
• | The vehicle is not in park. The IPC receives a class 2 message
from the powertrain control module (PCM) indicating the gear position. |
• | The vehicle speed is greater than 8.05 km/h (5 MPH). The
IPC uses the vehicle speed signal circuit (4000 pulses/mile) from
the PCM in order to calculate the vehicle speed. |
Fasten Safety Belt Warning
The chime producer activates the fasten safety belt audible warning as requested
by the IPC. The IPC sends a class 2 message to the chime producer indicating
the duration (8 seconds). 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.
Key-In-Ignition Warning
The chime producer activates the key-in-ignition audible warning as requested
by the IPC. The IPC sends a class 2 message to the chime producer indicating
the chime frequency 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
and the signal circuit is low. The IPC receives a class 2 message from
the BCM indicating the door ajar status. |
• | The BCM determines that the key-in-ignition switch is closed and the signal
circuit is low. The IPC receives a class 2 message from the BCM indicating
the key-in-ignition status. |
Lights On Warning
The chime producer activates the lights on warning as requested by the body
control module (BCM). The BCM sends a class 2 message to the chime producer
indicating the chime frequency (fast rate) and duration (continuous). The
lights on warning sounds when the following occurs:
• | The BCM determines that the driver's door is open and the signal circuit
is low. |
• | The BCM determines that the head lamp switch is in the park or head position. |
Additional Warnings
The following warnings have an associated IPC indicator or DIC indicator:
| The chime producer activates the audible warning
as requested by the IPC. The IPC sends a class 2 message to the chime producer
indicating the chime frequency and duration . |
| The chime producer activates the audible warning
as requested by the IPC. The IPC sends a class 2 message to the chime producer
indicating the chime frequency (medium rate) and duration (4 pulses). |
• | Oil Pressure Low Stop Engine |
| The chime producer activates
the audible warning as requested by the IPC. The IPC sends a class 2 message
to the chime producer indicating the chime frequency and duration . |
| The chime producer activates the audible
warning as requested by the IPC. The IPC sends a class 2 message to the chime
producer indicating the chime frequency and duration . |
| The chime producer activates the audible
warning as requested by the IPC. The IPC sends a class 2 message to the chime
producer indicating the chime frequency and duration (continuous). |
| The chime producer activates the audible warning
as requested by the IPC. The IPC sends a class 2 message to the chime producer
indicating the chime frequency and duration (1 pulse). |
Refer to
Indicator/Warning Message Description and Operation
.