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Home >> Infiniti >> 2014 >> Q60 Base, 2D Convertible, Standard Trans >> Repair and Diagnosis >> Electrical >> Gauges >> Meter, Warning Lamp & Indicator (Convertible) >> DTC/Circuit Diagnosis >> Fuel Level Sensor Signal Circuit >> Component Function Check
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Component Function Check

  1. PERFORM SELF-DIAGNOSIS OF UNIFIED METER AND A/C AMP. 

    Perform "Self Diagnosis" of unified meter and A/C amp. with CONSULT.

    Is any DTC detected? 

    YES: Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to "DTC INDEX ".

    NO: GO TO 2.

  2. PERFORM COMPONENT FUNCTION CHECK (1) 
    1. Turn ignition switch OFF.
    2. Disconnect fuel level sensor unit and fuel pump (main) and fuel level sensor unit (sub) connector.
    3. Connect variable resistor between harness connector terminals located on the vehicle side of the fuel level sensor unit and fuel pump (main) and the fuel level sensor unit (sub).
      Fuel level sensor unit and fuel pump (main) Fuel level sensor unit (sub)
      Connector Terminal Connector Terminal
      B22 5 B21 1
    4. Set variable resistor according to the resistance value shown in the following table and turn ignition switch ON.
      Resistance (Ω)(1) (Approx.) Fuel gauge indication position (Approx.)
      Less than 6.0 Full
      25.5 3/4
      45.5 2/4
      66.0 1/4
      More than 80.0 Empty
      (1) Reference resistance values used when the combination meter judges the indication position of the fuel gauge.

      Is the inspection result normal? 

      YES: GO TO 3.

      NO: GO TO  4.

  3. PERFORM COMPONENT FUNCTION CHECK (2) 

    Check the fuel level sensor unit and fuel pump (main) and the fuel level sensor unit (sub). Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: INSPECTION END

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

  4. CHECK DATA MONITOR OF UNIFIED METER AND A/C AMP. 

    Select "FUEL METER" that is the data monitor item of "METER/M&A". Apply resistance according to the table below and check the monitor value.

    Resistance (Ω) (Approx.) Reference value of data monitor [L] (Approx.)
    Less than 6.0 75
    25.5 58
    45.5 41
    66.0 22
    More than 80.0 11

    Is the inspection result normal? 

    YES: Replace combination meter. Refer to "REMOVAL AND INSTALLATION ".

    NO: Refer to "DIAGNOSIS PROCEDURE ".