K 2500 Suburban 4WD V8-454 7.4L VIN N TBI (1995)
Audible Warning Device: Description and Operation
Fasten Belts Warning Alarm
The Fasten Belts Warning Alarm will sound when the following conditions are met simultaneously: The Ignition Switch is in the RUN, BULB TEST or
START position and the LH front safety belt is not fastened. The Audio Alarm Module has a logic circuit which senses whether or not the LH front
safety belt is fastened. When the LH front safety belt is not fastened, voltage being sensed at the Audio Alarm Module is high, thus indicating that the LH
front safety belt is unfastened. The alarm will sound for approximately five seconds if the LH front safety belt is not fastened. The Audio Alarm
Module's Fasten Safety Belt Warning Alarm also incorporates an indicator within the Instrument Cluster Printed Circuit. The Fasten Safety Belts
Indicator works in conjunction with the Fasten Belts Warning Alarm. Voltage is applied to the indicator through the GAUGES FUSE 4 when the Ignition
Switch is in the RUN, BULB TEST or START position. The Audio Alarm Module controls the ground path to the indicator. When the Audio Alarm
Module receives a signal that the LH Front Safety Belt is unfastened, it completes the ground path for the Fasten Safety Belts Indicator.
