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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 13 (Supplemental Inflatable Restraints) >> Diagnostic Information and Procedures >> Air Bag Indicator Circuit Malfunction >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
  1. With the ignition ON, with a scan tool, request the ignition voltage parameter in the SIR data list. If the parameter does not read 9-16 volts, test the ignition 1 voltage for a short to voltage, open/high resistance or a short to ground.
    • If a condition exists, make the appropriate repair.
  2. With the ignition OFF, test the SDM ground circuit for an open or high resistance.
    • If a condition exists, make the appropriate repair
  3. Remove the inflatable restraint SDM connector. Inspect the SDM connector for damage or corrosion that may cause a malfunction.
    • If damage or corrosion is found make the appropriate repair.
  4. Replace the SDM. Refer to repair instructions .
  5. If replacement of the SDM does not repair the vehicle, replace the IPC. Refer to repair instructions .
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