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Home >> GMC >> 2022 >> Acadia SLE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Controls And Fuel - 3.6L (LGX) - Diagnostic Information And Procedures (3 Of 3)) >> Diagnostic Information and Procedures >> DTC P16D7-P16D9 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Ignition - On / Vehicle - In Service Mode
  2. Verify DTC P16D7, P16D8, P16D9 is not set.
    • If any of the DTCs are set 

      Refer to: Circuit/System Testing

    • Go to next step: If none of the DTCs are set 
  3. Verify DTC P16D7, P16D8, P16D9 is not set.
    • Perform the action while monitoring the scan tool: DTC Display
    • Wiggle the harness and connector: K20 Engine Control Module
    • Wiggle the harness and connector: K111 Fuel Pump Power Control Module
    • Wiggle the harness and connector: Control module K111 chassis ground connection
    • If the DTC sets 

      Repair as necessary - Wiring / Terminal(s) / Electrical Connector(s)

    • Go to next step: If the DTC does not set 
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

    Verify the DTC does not set.

    • If the DTC sets 

      Refer to: Circuit/System Testing

    • Go to next step: If the DTC does not set 
  5. All OK.
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