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Home >> Infiniti >> 2004 >> M45 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> DTC P0462, P0463: Fuel Level Sensor >> Diagnostic Procedure >> 2. Check Fuel Level Sensor Power Supply Circuit

2. Check Fuel Level Sensor Power Supply Circuit

  1. Disconnect "fuel level sensor unit and fuel pump" harness connector.
    Fig 1: Identifying Fuel Level Sensor Unit And Fuel Pump Harness Connector
    G00796147Courtesy of NISSAN MOTOR CO., U.S.A.
  2. Turn ignition switch ON.
  3. Check voltage between "fuel level sensor unit and fuel pump" terminal 5 and ground with CONSULT-II or tester.
    Fig 2: Checking Voltage Between Fuel Level Sensor Unit And Fuel Pump Terminal 5 & Ground
    G00796148Courtesy of NISSAN MOTOR CO., U.S.A.

    Voltage: Battery voltage 

OK or NG 

  1. OK: GO TO 4. CHECK FUEL LEVEL SENSOR GROUND CIRCUIT FOR OPEN AND SHORT .
  2. NG: GO TO 3.