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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 977 (Supplemental Inflatable Restraint System) >> Diagnostic Information and Procedures >> DTC B0098 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    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 inflatable restraint I/P module disable switch
    • The SDM
    • The inflatable restraint I/P module wiring harness connector
    • The SDM wiring harness connector
  1. Ignition OFF, disconnect the harness connector at the inflatable restraint I/P module disable switch.
  2. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal B and ground.
    • If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance, if the circuit tests normal and the ignition fuse is open, test or replace the inflatable restraint I/P module disable switch.
  3. Verify that a test lamp illuminates between the I/P module disable switch signal control circuit terminal E and B+.
    • If the test lamp does not illuminate, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the SDM.
  4. Verify that a test lamp illuminates between the I/P module suppression indicator control (OFF) circuit terminal A and B+.
  5. If all circuits test normal, test or replace the inflatable restraint I/P module disable switch.
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