Circuit Operation
The body control module generates a chime in order to provide the following
warnings:
Lights On Warning
The body control module (BCM) will sound the lights on warning
when the BCM senses all of the following conditions:
| • | The ignition switch is in the OFF, LOCK or ACCY position. Voltage
is not present at the BCM ignition positive voltage input. |
| • | The park lamps or the headlamps are on. Voltage is applied to
the BCM park lamps input. |
| • | The driver door is open. Ground is applied to the BCM driver door
open input. |
Ignition Key Warning
The Body Control Module (BCM) will sound the ignition key warning
when the BCM senses all of the following conditions:
| • | The ignition switch is in the OFF, LOCK or ACCY position. Voltage
is not present at the BCM ignition positive voltage input. |
| • | The ignition key is in the ignition switch. Ground is applied
to the BCM key ignition signal input. |
| • | The driver door is open. Ground is applied to the BCM driver
door open input. |
Fasten Belts Warning
The body control module (BCM) will sound the fasten belts warning
for 5-8 seconds and illuminate the fasten seat belt indicator
under the following conditions:
| • | The ignition switch is in the RUN, BULB TEST or START position.
Voltage is applied to the BCM ignition positive voltage input. |
| • | The driver's seat belt is unbuckled. Ground is applied to the
BCM seat belt switch signal input. |
If the driver seat belt is buckled before the ignition switch is turned
to the RUN position, the BULB TEST position, or the START position, the following
will occur:
| • | The fasten seat belt warning will be disabled. |
| • | The fasten seat belt indicator will not illuminate. |
If the driver seat belt is unbuckled, the fasten seat belt indicator
will remain ON for approximately 70 seconds. The indicator turns off
immediately if the seat belt is buckled.
