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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 79 (Supplemental Inflatable Restraint System) >> Diagnostic Information and Procedures >> Air Bag Indicator Circuit Malfunction >> Circuit/System Testing

Circuit/System Testing

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  1. Ignition ON, use the scan tool to request the SIR data list display. Observe the Battery Voltage Parameter. The battery voltage on the scan tool should read 9-16 volts.
  2. Ignition ON, monitor the IPC. The SIR warning indicator should flash then turn OFF. Verify that the SIR warning indicator flash and then turn OFF.
    • If the SIR warning indicator continually flashes then reprogrammed the SDM, refer to SDM programming in Repair Instructions.
  3. Using the scan tool, go to Body and Accessories, then go onward to Special Functions to Instrument Panel Cluster, and then go to Display Test. In the Display Test mode you can turn ON or OFF all the instrument panel indicators when commanded ON. Commanded the IPC indicators ON. The Air Bag indicator should turn ON.
    • If the Air Bag indicator does not turn ON, replace the IPC.

      Note: The AIR BAG warning indicator is not serviceable separately. The IPC must be serviced/replaced as a complete unit.

  4. If the scan tool commands the Air Bag indicator ON and OFF, replace the SDM.
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