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Home >> Infiniti >> 2013 >> EX37 Base, RWD >> 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 

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

    : GO TO 2.

  2. CHECK FUEL LEVEL SENSOR UNIT AND FUEL PUMP (MAIN) 

    Check the resistance between fuel level sensor unit and fuel pump (main).

    Fuel level sensor unit and fuel pump (main) Condition(1) Resistance (Approx.)
    Terminal
    2 5 Full (A) 2.5 Ω
    Empty (B) 81.5 Ω
    (1) When float rod is contact with stopper.
    Fig 1: Identifying Fuel Level Sensor Unit And Fuel Pump Float Position (Empty And Full Conditions)
    G08998291Courtesy of NISSAN NORTH AMERICA, INC.
    STANDARD FLOAT POSITION

    Float position [mm (in)](1)
    Full (A) Approx. 192 (7.56)
    Empty (B) Approx. 32 (1.26)
    (1) When float rod is contact with stopper.

    Is the inspection result normal? 

    YES: GO TO 3.

    NO: Replace fuel level sensor unit and fuel pump (main).

  3. CHECK FUEL LEVEL SENSOR UNIT (SUB) 

    Inspect the resistance of fuel level sensor unit (sub).

    Fuel level sensor unit (sub) Condition(1) Resistance (Approx.)
    Terminal
    1 2 Full (A) 2.5 Ω
    Empty (B) 42.5 Ω
    (1) When float rod is contact with stopper.
    Fig 2: Identifying Fuel Level Sensor Unit Float Position (Empty And Full Conditions)
    G08998292Courtesy of NISSAN NORTH AMERICA, INC.
    STANDARD FLOAT POSITION

    Float position [mm (in)](1)
    Full (A) Approx. 35 (1.38)
    Empty (B) Approx. 203 (7.99)
    (1) When float rod is contact with stopper.

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: Replace fuel level sensor unit (sub).