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Home >> Buick >> 2017 >> LaCrosse Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls And Fuel - 3.6L (LGX) - DTC P0446 To DTC P3436 And Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P129D: Fuel Pump Driver Control Module >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Verify DTC P0562 is not set.
    • If the DTC is not set 
  3. Verify the DTC P129D does not set.
    • If DTC P129D sets 

      Refer to Circuit/System Testing.

    • If DTC P129D 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.
  5. Verify DTC P129D does not set.
    • If DTC P129D sets 

      Refer to Circuit/System Testing.

    • If DTC P129D does not set 
  6. All OK.
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