Chime Conditions
An audible warning is used to indicate a system fault or warn the driver
of a critical vehicle condition. The radio is capable of supporting multiple
types of chimes.
The actual generation of the pulse profile and sounding of the chime
is performed by the radio. The BCM communicates chime ON/Off commands and
rate information to the radio via class 2 serial data.
The radio supports chime functionality for each of the driver warning
and status messages generated by the BCM. The BCM checks calibration data
for chime information anytime a driver warning or message is displayed.
Audible warnings bring the driver's attention to one or more of the
following conditions:
| • | The seat belt is unbuckled and the ignition switch is in ON or
START. |
| • | The key is in ignition switch, the ignition switch is set to
OFF or ACC, and drivers front door is open. |
| • | The headlamps or parklamps are on, the ignition switch is in OFF
or ACC, the and drivers door is open. |
| • | The parking brake is engaged. |
Chime Priorities
When multiple chimes are required, only the chime with the highest priority
sounds. The chimes are prioritized as follows:
| • | The Fasten Seat Belts Warning chime overrides all other audible
chimes if they exist simultaneously. |
| • | The Key In Ignition Warning chime overrides the Lamps On Warning
chime if both exist simultaneously. |
Chime Rates
The rates of chime operation are as follows:
| • | The fasten belts warning chime rate is 50 pulses per minute. |
| • | The lamps on warning chime rate is 150 pulses per minute. |
| • | The key in ignition warning chime rate is 200 pulses per minute. |
| • | The park brake warning chime rate is 200 pulses per
minute. |
