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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1094 (Supplemental Inflatable Restraint System) >> Diagnostic Information and Procedures >> DTC B1370 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2008 Cadillac CTS. 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.
  • SDM
  • SDM wiring harness
  1. Ignition ON, verify DTC B1370 is not set in any other control modules.
  2. Ignition OFF, disconnect the harness connector at the SDM.
  3. Ignition ON, verify a test lamp illuminates between the ignition circuit terminal 32 and ground.
    • If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open high resistance.
  4. If all circuits test normal, replace the SDM.
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