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Home >> Infiniti >> 2012 >> M37 x >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter, Warning Lamp & Indicator >> DTC/Circuit Diagnosis >> Fuel Level Sensor Signal Circuit >> Component Inspection

Component Inspection

  1. REMOVE FUEL LEVEL SENSOR UNIT (MAIN) 

    Remove the fuel level sensor unit (main). Refer to "REMOVAL AND INSTALLATION ".

    : GO TO 2.

  2. CHECK FUEL LEVEL SENSOR UNIT (MAIN) 

    Check the resistance between fuel level sensor unit and fuel pump.

    Terminals Condition Resistance (Ω) (Approx.) Height [mm (in)]
    Fuel level sensor unit (main)
    2 5 Full(1) (A) 44 202.3 (7.96)
    Empty(1) (B) 142 36.8 (1.449)
    (1) When float rod is contact with stopper.
    Fig 1: Checking Resistance Between Fuel Level Sensor Unit And Fuel Pump (Main)
    G05731212Courtesy of NISSAN NORTH AMERICA, INC.

    Is inspection result OK? 

    YES: GO TO 3.

    NO: Replace fuel level sensor unit and fuel pump (main). Refer to "REMOVAL AND INSTALLATION ".

  3. REMOVE FUEL LEVEL SENSOR UNIT (SUB) 

    Remove the fuel level sensor unit (sub). Refer to "REMOVAL AND INSTALLATION ".

    : GO TO 4.

  4. CHECK FUEL LEVEL SENSOR UNIT (SUB) 

    Check the resistance between fuel level sensor unit (sub).

    Terminals Condition Resistance (Ω) (Approx.) Height [mm (in)]
    Fuel level sensor unit (main)
    1 2 Full(1) (A) 7 3.9 (0.154)
    Empty(1) (B) 142 175.8 (6.92)
    (1) When float rod is contact with stopper.

    Is inspection result OK? 

    YES: INSPECTION END

    NO: Replace fuel level sensor unit (sub). Refer to "REMOVAL AND INSTALLATION ".

    Fig 2: Checking Resistance Between Fuel Level Sensor Unit (Sub)
    G05975152Courtesy of NISSAN NORTH AMERICA, INC.
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