K 1500 Truck 4WD V8-5.7L VIN R (1997)
Malfunction Lamp / Indicator: Description and Operation
Air Bag Warning Lamp
The AIR BAG warning lamp indicates the words AIR BAG for domestic vehicles (Figure 5). The ignition switch applies ignition voltage to the AIR
BAG warning lamp. The AIR BAG warning lamp receives power whenever the ignition switch is in the RUN or START positions. The inflatable
restraint Sensing and Diagnostic Module (SDM) controls the lamp by providing ground with a lamp driver. The SIR system uses the AIR BAG warning
lamp to do the following:
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Verify lamp and SDM operation by flashing the lamp seven times when the ignition switch is first turned to the RUN position.
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Warn the vehicle driver of SIR electrical system malfunctions which could potentially affect the operation of the SIR system. These
malfunctions could result in non-deployment in case of a frontal crash or deployment for conditions less severe than intended.
The AIR BAG warning lamp is the key to driver notification of SIR system malfunctions. For proper lamp operation, refer to SIR Diagnostic System
Check.
