Air Bag Warning Lamp

The AIR BAG warning lamp is represented by an icon graphic. Ignition voltage is applied to the AIR BAG warning lamp when the ignition switch is ON The inflatable restraint Sensing and Diagnostic Module (SDM) controls the lamp by communicating with the instrument cluster over the Class 2 serial data circuit. The SIR system uses the AIR BAG warning lamp to do the following:
^ Verify proper SIR system operation by commanding the lamp OFF via serial data after seven flashes. The instrument cluster flashes the AIR BAG warning lamp seven times when the ignition switch is turned ON.
^ Warn the driver of electrical system malfunctions which could potentially affect the operation of the SIR system. These malfunctions could result in one or more of the following conditions:
- Deployment of the frontal air bag(s) or the pretensioner(s) without a frontal crash;
- Deployment of the side air bag(s) without a side crash
- Non-deployment of the frontal air bag(s) or the pretensioner(s) in the event of a crash;
- Non-deployment of a side air bag in the event of a side crash; or
- Deployment of an air bag(s) or a pretensioner(s) for conditions less severe than intended.

The AIR BAG warning lamp is the key to driver notification of SIR system malfunctions. Refer to A Diagnostic System Check - SIR for proper operation of the AIR BAG warning lamp.