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Home >> Buick >> 2016 >> Envision >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls And Fuel - 2.0L (LTG) - DTC P0243 To DTC P2635 And Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P129D: Fuel Pump Driver Control Module Ignition 1 Switch >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Verify DTC P129D is not set.
    • If the DTC is set 

      Refer to Circuit/System Testing.

    • If the DTC is not set 
  3. All OK.
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