The audible warnings alert the driver of a system concern or a critical vehicle
condition. The instrument panel cluster (IPC) generates the audible warnings. The
IPC receives audible warning requests via the class 2 serial data line. If
the IPC 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 instrument panel cluster (IPC) activates the fasten safety belt audible
warning as requested by the inflatable restraint sensing and diagnostic module (SDM).
The SDM sends a class 2 message to the IPC. The fasten safety belt warning
sounds and the fasten safety belt indicator illuminates when the following occurs:
| • | The ignition switch transitions to ON. |
| • | The SDM detects that the driver seat belt is not buckled and or the signal
is low. The IPC receives a class 2 message from the SDM indicating the driver
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 instrument panel cluster (IPC) activates the key-in-ignition audible warning
as requested by the body control module (BCM). The BCM sends a class 2 message
to the IPC. The key-in-ignition warning sounds when the following occurs:
| • | The ignition switch is OFF. |
| • | The BCM determines that the driver 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 instrument panel cluster (IPC) 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 door is open and the signal circuit
is low. |
| • | The BCM determines that the headlamp switch is in the park or head position. |
Park Brake Warning
The instrument panel cluster (IPC) activates the park brake audible warning
as requested by the body control module (BCM). The BCM sends a class 2 message
to the IPC. 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 engine control module (ECM)/powertrain
control module (PCM) indicating the vehicle speed. |
| • | The BCM determines that the park brake is engaged and the signal circuit
is low. |
