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. 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
No chime will sound when a loss of class 2 communications with
the BCM and or radio occurs.
Fasten Safety Belt Warning
The radio activates the fasten safety belt audible warning as requested
by the BCM. The BCM sends a class 2 message to the radio indicating
the chime frequency of a slow rate and an 8 second duration. 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 and or the signal is low. The
SDM sends a class 2 message to the body control module (BCM) indicating
the seat belt status. The IPC receives a class 2 message
from the BCM 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 radio activates the key-in-ignition audible warning as requested
by the body control module (BCM). The BCM sends a class 2 message
to the radio indicating the chime frequency of a medium rate and
a continuous duration. 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 BCM determines that the key-in-ignition switch is closed and
the signal circuit is low. |
Lights On Warning
The radio activates the lights on warning as requested by the body control
module (BCM). The BCM sends a class 2 message to the radio indicating
the chime frequency of a fast rate and a continuous duration. 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 headlamp switch is in the park or
head position. |
Overspeed Warning (Export)
The radio activates the overspeed warning as requested by the body control
module (BCM). The BCM sends a class 2 message to the radio indicating
the chime frequency of a medium rate and a continuous duration. The overspeed
warning sounds when the BCM senses that the vehicle speed is above 120 km/h
via a class 2 message from the powertrain control module (PCM). The
overspeed warning turns off when the BCM senses that the vehicle speed is
below 110 km/h.
Park Brake Warning
The radio activates the park brake audible warning as requested by the
body control module (BCM). The BCM sends a class 2 message to the
radio indicating the chime frequency of a fast rate and a continuous duration.
The park brake warning sounds and the BRAKE indicator illuminates
when the following occurs:
| • | The vehicle speed is greater than 5 km/h (3.1 mph).
The BCM receives a class 2 message from the PCM indicating the vehicle
speed. |
| • | The BCM determines that the park brake is engaged and the signal
circuit is low. |
Reverse Warning
The radio activates the reverse audible warning as requested by the
body control module (BCM). The BCM sends a class 2 message to the radio
indicating the medium rate chime frequency and a continuous duration. The
reverse warning sounds when the following occurs:
| • | The ignition is ON with the engine ON. |
| • | The vehicle is in reverse for at least one second. |
