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Home >> Infiniti >> 2004 >> Q45 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> Fuel Pump Circuit >> Diagnostic Procedure >> 2. Check Fuel Pump Relay Power Supply Circuit

2. Check Fuel Pump Relay Power Supply Circuit

  1. Turn ignition switch OFF.
  2. Disconnect fuel pump relay.
  3. Turn ignition switch ON.
    Fig 1: Locating Fuel Pump Relay
    G00761385Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Check voltage between terminals 2, 3 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 terminals 2, 3 & ground
G00761386Courtesy of NISSAN MOTOR CO., U.S.A.