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Home >> Infiniti >> 2004 >> Q45 >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System >> DTC P1220: Fuel Pump Control Module (FPCM) >> Diagnostic Procedure >> 2. Check FPCM Power Supply Circuit
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2. Check FPCM Power Supply Circuit

  1. Disconnect fuel pump control module (FPCM) harness connector.
    Fig 1: Locating Fuel Pump Control Module
    G00761084Courtesy of NISSAN MOTOR CO., U.S.A.
  2. Turn ignition switch ON.
  3. Check voltage between FPCM terminal 2 and ground with CONSULT-II or tester.
    1. Voltage: Battery voltage 

OK or NG 

OK: GO TO 4.

NG: GO TO 3.

Fig 2: Checking Voltage Between FPCM Terminal 2 & Ground
G00761085Courtesy of NISSAN MOTOR CO., U.S.A.