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Home >> Infiniti >> 2021 >> Q50 Pure, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Warning Systems >> Meter, Warning Lamp & Indicator (Diagnostics) >> Component/Circuit Diagnosis >> Fuel Level Sensor Signal Circuit >> Component Function Check
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Component Function Check

  1. PERFORM COMPONENT FUNCTION CHECK (1) 
    1. Turn ignition switch OFF.
    2. Disconnect fuel level sensor unit and fuel pump (main) connector 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 fuel level sensor unit (sub).

      Fuel level sensor unit and fuel pump (main)

      Fuel level sensor unit (sub)

      Connector

      Terminals

      Connector

      Terminals

      B101

      3

      B161

      2

    4. Set variable resistor according to the resistance value shown in the following table and turn ignition switch ON.

      Resistance (Ohm) *

      (Approx.)

      Fuel gauge indication position

      (Approx.)

      Less than 98

      Full

      186

      1/2

      232

      1/4

      255

      1/8

      More than 275

      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 2.

    NO

    Refer to Diagnosis Procedure .

  2. PERFORM COMPONENT FUNCTION CHECK (2) 

    Check the fuel level sensor unit and fuel pump (main) and/or fuel level sensor unit (sub). Refer to Component Inspection .

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Replace the fuel level sensor unit and fuel pump (main) and/or fuel level sensor unit (sub). Refer to FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY : Removal & Installation .