Air Bag Indicator

The AIR BAG indicator, located in the IPC is used to notify the driver of SIR system malfunctions. When the ignition is turned ON, the SDM is supplied with ignition 1 voltage. The SDM flashes the AIR BAG indicator seven times. While flashing the AIR BAG indicator, the SDM conducts tests on all SIR system components and circuits. If no malfunctions are detected, the SDM will turn the AIR BAG indicator OFF. The SDM provides continuous monitoring of the inflator module circuits by conducting a sequence of checks. If a malfunction is detected, the SDM will store a Diagnostic Trouble Code (DTC) and turn the AIR BAG indicator ON. The presence of a SIR system malfunction could result in non-deployment of the inflator modules. The AIR BAG indicator will remain ON until the malfunction has been repaired. The AIR BAG indicator is the key to driver notification of SIR system malfunctions. The AIR BAG indicator is used to inform the driver of the proper operation of the SIR system. The SDM uses the AIR BAG indicator to do the following:
^ Verity proper SIR system operation by turning the AIR BAG indicator OFF.
^ Warn the driver of SIR system malfunctions, which could potentially result in one or more of the following conditions:
- Deployment of the inflator module(s) without a frontal crash
- Non-deployment of the inflator module(s) in the event of a crash
- Deployment of an inflator module(s) for conditions less severe than intended