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Home >> Buick >> 2013 >> Verano Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls/Fuel - 2.4L (Lea) - DTC P0340 To DTC P2635 And Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P0601-P0604, P0606, or P062F (Fuel Pump Control Module) >> Circuit/System Verification

Circuit/System Verification

NOTE:

This DTC may be stored as a history DTC without affecting the operation of the module. If stored only as a history DTC and not retrieved as a current DTC, do not replace the module.

  1. Ignition ON.
  2. Verify DTC P0602 is not set.
    • If DTC P0602 is set 
    1. Program the K27 fuel pump control module.
    2. Verify the DTC does not set.
      • If the DTC sets, replace the K27 fuel pump control module.
      • If the DTC does not set.
    3. All OK.
    • If DTC P0602 is not set 
  3. Verify DTCs P0601, P0603, P0604, P0606, and P062F are not set.
    • If any of the DTCs are set 
    1. Program the K27 fuel pump control module.
    2. Verify the DTC does not set.
      • If the DTC sets, replace the K27 fuel pump control module.
      • If the DTC does not set.
    3. All OK.
    • If none of the DTCs are set 
  4. All OK
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