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Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 5 (Meter, Warning Lamp & Indicator (DTC/Circuit Diagnosis) (Except Hybrid)) >> DTC/Circuit Diagnosis >> Fuel Level Sensor Signal Circuit >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to WIRING DIAGRAM - WITH AUTOMATIC DRIVE POSITIONER or WIRING DIAGRAM - WITHOUT AUTOMATIC DRIVE POSITIONER .

  1. CHECK HARNESS CONNECTOR

    1. Turn ignition switch OFF.
    2. Check combination meter and fuel level sensor unit terminals (meter-side and harness-side) for poor connection.

    Is the inspection result normal?

    YES 

    GO TO STEP 2 

    NO 

    Repair or replace terminals or connectors.

  2. CHECK FUEL LEVEL SENSOR UNIT CIRCUIT

    1. Disconnect combination meter harness connector M24 and fuel level sensor unit harness connector B72.
    2. Check continuity between combination meter harness connector M24 and fuel level sensor unit and fuel pump harness connector B72.
      Fuel level sensor unit and fuel pump Combination meter Continuity
      Connector Terminal Connector Terminal
      B72 5 M24 27 Yes
    3. Check continuity between fuel level sensor unit and fuel pump harness connector and ground.
      Connector Terminal Ground Continuity
      B72 5 No

    Is the inspection result normal?

    YES 

    GO TO STEP 3 

    NO 

    Repair or replace harness or connectors.

  3. CHECK FUEL LEVEL SENSOR UNIT GROUND CIRCUIT

    1. Check continuity between combination meter harness connector M24 and fuel level sensor unit and fuel pump harness connector B72.
      Connector Terminal Connector Terminal Continuity
      B72 2 M24 26 Yes
    2. Check continuity between fuel level sensor unit and fuel pump harness connector and ground.
      Connector Terminal Ground Continuity
      B72 2 No

    Is the inspection result normal?

    YES 

    GO TO STEP 4 

    NO 

    Repair or replace harness or connectors.

  4. CHECK INSTALLATION CONDITION

    Check fuel level sensor unit installation, and check whether the float arm interferes or binds with any of the internal components in the fuel tank.

    Is the inspection result normal?

    YES 

    Inspection End.

    NO 

    Install the fuel level sensor unit properly. Refer to REMOVAL AND INSTALLATION .

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