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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 855 (Supplemental Inflatable Restraint System) >> Diagnostic Information and Procedures >> DTC B0083 or B0084 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet 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 front end sensor
    • The SDM module
    • The front end sensor wiring harness connector
    • The SDM wiring harness connector
  1. Ignition OFF, disconnect the appropriate front end sensor harness connector.
  2. Remove the SDM connector.
  3. Ignition ON, test the signal and voltage circuits between the SDM and front end sensor for a short to voltage, short to ground, or open/low resistance. Verify that a short to voltage, short to ground, or open/low resistance does not exist.
    • If any of the above conditions are found, make the appropriate repair.
  4. Reconnect all SIR components. With the ignition ON, use the scan tool to clear the DTCs then recheck for DTCs.
    • If DTC is set as current, replace the appropriate front end sensor.
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