Volt

Air Bag Indicator Circuit Malfunction - Driver

With the Vehicle in Service Mode, during the bulb check, the driver air bag indicator will flash, and then turn OFF after the bulb check. The inflatable restraint sensing and diagnostic module (SDM) performs diagnostic tests on the SIR system during the bulb check. If any malfunction exists the SDM will request the instrument cluster to illuminate the air bag indicator steady, via serial data. If a preexisting malfunction exists, the air bag indicator will illuminate steady immediately after the ignition is turned ON. If the ignition 1 voltage is outside of the normal operating voltage range of 9-16 V, the SDM will command the instrument cluster to illuminate the air bag indicator ON, even with no DTCs present, and then disable all deployment loops.

Schematic Reference

SIR Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

SIR System Description and Operation

Electrical Information Reference

Scan Tool Reference

Control Module References for scan tool information

If the driver air bag indicator is flashing, refer to Inflatable Restraint Sensing and Diagnostic Module Programming and Setup .

1. Vehicle in Service Mode. With a scan tool, verify SDM DTCs are not set.

⇒	If SDM DTCs are set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

⇓	If SDM DTCs are not set

2. With a scan tool command the Instrument Cluster to turn all instrument cluster indicators ON and OFF. The air bag indicator should turn ON and OFF as commanded.

⇒	If air bag indicator does not turn on or off

If the air bag indicator does not turn ON and OFF as expected, replace the P16 instrument cluster.

⇓	If air bag indicator does turn on or off

3. Replace the K36 SDM.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.