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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 >> Passenger Presence System Indicator Circuit Malfunction >> Circuit/System Testing

Circuit/System Testing

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    IMPORTANT: When removing connectors, inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector:
    • The IPC module
    • The PPS module
    • The SDM module
    • The IPC module wiring harness connector
    • The PPS module wiring harness connector
    • The SDM wiring harness connector
  1. Using the scan tool, go to Body and Accessories, then go onward to Special Functions to Instrument Panel Cluster (IPC), 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 PPS indicators should turn ON.
    • If the passenger AIR BAG ON/OFF indicator does not turn ON, remove the connector from the PPS indicator display.
    • On the PPS connector, test and repair the passenger AIR BAG ON/OFF indicator voltage circuit for a short to ground, a high resistance, or an open. If any of these conditions are found, make the appropriate repair.
    • Connect a test lamp between the ignition 1 voltage circuit and passenger AIR BAG OFF indicator control circuit on the passenger AIR BAG ON/OFF indicator connector. With the passenger seat empty, use a scan tool to command the display test. Verify the test lamp illuminates.
      • If test lamp illuminates, replace the passenger AIR BAG ON/OFF indicator.
    • Remove the IPC connector. Test and repair both ON and OFF indicator control circuits between the PPS indicator and the IPC for a short to voltage, high resistance, or an open. If any of these conditions are found, make the appropriate repair.

      Refer to IPC replacement  in Repair Instructions for connector location.

    • If passenger AIR BAG ON/OFF indicator voltage, ON, and OFF circuits test good, replace the IPC.

      Note: The IPC must be serviced/replaced as a complete unit.

  2. PPS indicators turns ON when command ON then replace the PPS.
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