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Home › Genesis › 2017 › G80 3.8, AWD › Repair and Diagnosis › Engine Performance › System › Engine Control System Diagnosis (3 Of 3) - 3.8L › DTC U0109: Lost Communication With Fuel Pump Control Module › Component Inspection

Component Inspection

  1. Connect GDS and select "Diagnostic Trouble Codes (DTC)" mode.
  2. IG "ON".
  3. Using a GDS, Clear DTC.
  4. IG "OFF".
  5. Disconnect ECU's connector connected to P-CAN bus.
  6. IG "ON".
  7. Connect GDS and select "Diagnostic Trouble Codes (DTC)"  mode.
  8. Are any DTCs present?

    YES 

    • Go to step  1 of the component inspection and disconnect another ECU's connector connected to CAN bus in step  5.
    • Repeat above step until test completed on all ECU in CAN bus.
    • If DTC is present after above test, substitute with a known-good FPCM and check for proper operation. If problem is corrected, replace FPCM and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

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