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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Engine Controls And Fuel - 2.4L - DTC P0628 To DTC P2635 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P12A6: Fuel Pump Driver Control Module Enable Circuit >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Ignition ON.
  2. Verify that DTC P12A6 is not set.
    • If the DTC is set 

      Refer to Circuit/System Testing

    • If the DTC is not set 
  3. Command the Fuel Pump Enable ON and OFF with a scan tool.
  4. Verify the following scan tool control circuit status parameters display OK:
    • Fuel Pump Enable Circuit Low Voltage Test Status
    • Fuel Pump Enable Circuit Open Test Status
    • Fuel Pump Enable Circuit High Voltage Test Status
    • If Malfunction is displayed 

      Refer to Circuit/System Testing

    • If OK is displayed 
  5. 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.
  6. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing

    • If the DTC does not set 
  7. All OK.
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