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Home >> Infiniti >> 2015 >> QX80 Base, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter, Warning Lamp & Indicator >> DTC/Circuit Diagnosis >> Fuel Level Sensor Signal Circuit >> Component Function Check

Component Function Check

  1. PERFORM COMPONENT FUNCTION CHECK (1)

    1. Turn ignition switch OFF.
    2. Disconnect fuel level sensor unit and fuel pump connector.
    3. Connect variable resistor between harness connector terminals located on the vehicle side of the fuel level sensor unit and fuel pump.
      Fuel level sensor unit and fuel pump
      Connector Terminals
      C5 2 5
    4. Set variable resistor according to the resistance value shown in the following table and turn ignition switch ON.
      Resistance (Ω)*
      (Approx.)
      Fuel gauge indication position
      (Approx.)
      Less than 94.0 Full
      140.0 3/4
      186.0 2/4
      232.0 1/4
      More than 278.0 Empty

      * : Reference resistance values used when the combination meter judges the indication position of the fuel gauge.

    Is the inspection result normal?

    YES 

    GO TO STEP 2. 

    NO 

    Refer to DIAGNOSIS PROCEDURE .

  2. PERFORM COMPONENT FUNCTION CHECK (2)

    Check the fuel level sensor unit and fuel pump. Refer to COMPONENT INSPECTION .

    Is the inspection result normal?

    YES 

    INSPECTION END

    NO 

    Replace the fuel level sensor unit and fuel pump. Refer to REMOVAL AND INSTALLATION .