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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 93 (Air Bag Restraint Systems) >> Diagnostic Tests >> Air Bag Warning Light Circuit Malfunction >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2002 Pontiac Montana, 2002 Oldsmobile Silhouette, and 2002 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.
  1. If SIR diagnostic system check has been performed, go to next step. If SIR diagnostic system check has not been performed, go to SIR DIAGNOSTIC SYSTEM CHECK .
  2. Turn ignition off. Observe AIR BAG warning light while turning ignition on. If AIR BAG warning light does not flashes 7 times, go to next step. If AIR BAG warning light does flash 7 times, go to step  4.
  3. Replace Instrument Panel Cluster (IPC). See INSTRUMENT PANEL CLUSTER (IPC)  under REMOVAL & INSTALLATION. Go to step  13.
  4. If AIR BAG warning light turns off after flashing 7 times, check for intermittent connections in AIR BAG warning light circuit. If AIR BAG warning light does not turn off after flashing 7 times, go to next step.
  5. Connect scan tool to Data Link Connector (DLC), located under left side of instrument panel. If scan tool communicates with IPC, go to next step. If scan tool does not communicate with IPC, check data link communication circuits.
  6. Using scan tool, request SIR data list display. If ignition voltage is greater than 9 volts, go to next step. If ignition voltage is 9 volts or less, go to step  8.
  7. If ignition voltage is more than 16 volts, check battery and charging system. Go to step  13. If ignition voltage is 16 volts or less, go to step  12.
  8. Turn ignition off. Disconnect SDM connector. See Figure. If SDM connector is damaged, replace SDM connector. See WIRE REPAIR . Go to step  13. If SDM connector is okay, go to next step.
    NOTE: Use Digital Multimeter (J-39200) and Connector Test Adapter Kit (J-35616-A) or Flat Wire Probe Adapter Kit (J-42675) when performing electrical tests.
  9. Remove SDM fuse from fuse block. Check Yellow wire between SDM connector terminal A10 and SDM fuse for open or high resistance. If open or high resistance is found and corrected, go to step  13. If open or high resistance is not found, go to next step.
  10. Check voltage feed circuit to SDM fuse for open or high resistance. If open or high resistance is found and corrected, go to step  13. If open or high resistance is not found, go to next step.
  11. Check SDM ground circuit 1751 for an open or high resistance. If an open or high resistance condition is found and corrected, go to step  13. If an open or high resistance is not found and corrected, go to next step.
  12. Replace SDM. See SENSING & DIAGNOSTIC MODULE (SDM)  under REMOVAL & INSTALLATION. Reconnect all SIR components. Clear all SIR DTC's. Go to SIR DIAGNOSTIC SYSTEM CHECK .
  13. Reconnect all SIR components. Road test vehicle. If AIR BAG warning light operates normally, system is okay. If AIR BAG warning light is malfunctioning, go to step  2.
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