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Home >> Infiniti >> 2004 >> Q45 >> Repair and Diagnosis (Single Page) >> Engine Performance >> Engine Control System >> DTC P1220: Fuel Pump Control Module (FPCM) >> Diagnostic Procedure >> 4. Check FPCM Ground Circuit-I For Open And Short
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4. Check FPCM Ground Circuit-I For Open And Short

  1. Turn ignition switch OFF.
  2. Check harness continuity between FPCM terminal 3 and ground.

    Refer to Wiring Diagram.

    1. Continuity should exist. 
  3. Also check harness for short to power.

OK or NG 

OK: GO TO 5.

NG: Repair open circuit or short to power in harness or connectors.