LEMON Manuals: Even more car manuals for everyone
Home >> Infiniti >> 2008 >> G37 Base >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter, Warning Lamp & Indicator >> Component 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).

    TERMINAL RESISTANCE CHART

    Terminal Float position Resistance value (Ω)
    2 5 Full (A) Approx. 3
    Empty (B) Approx. 80
    Fig 1: Checking Resistance Between Fuel Level Sensor Unit And Fuel Pump (Main)
    G05223670Courtesy of NISSAN MOTOR CO., U.S.A.

    Standard float position

    STANDARD FLOAT POSITION

    Float position [mm (in)]
    Full Approx. 210 (8.27)
    Empty Approx. 30 (1.18)

    Is the inspection result OK? 

    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).

    TERMINAL RESISTANCE CHART

    Terminal Float position Resistance value (Ω)
    1 2 Full (A) Approx. 3
    Empty (B) Approx. 43
    Fig 2: Checking Resistance Of Fuel Level Sensor Unit (SUB)
    G05223671Courtesy of NISSAN MOTOR CO., U.S.A.

    Standard float position

    STANDARD FLOAT POSITION

    Float position [mm (in)]
    Full Approx. 9 (0.35)
    Empty Approx. 179 (7.05)

    Is the inspection result OK? 

    YES: INSPECTION END

    NO: Replace fuel level sensor unit (sub).