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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 342 (Bolted Exterior Body Panels And Closures) >> Diagnostic Information and Procedures >> DTC P257D-P257F: Engine Hood Switch >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify the scan tool Hybrid Powertrain Control Module Hood Position parameter is Open when the hood is open and Closed when the hood is closed.
    • If the parameter does not change 

      Refer to Circuit/System Testing.

    • If the parameter changes 
  3. All OK.
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