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Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 898 (Meter, Warning Lamp & Indicator) >> DTC/Circuit Diagnosis >> Fuel Level Sensor Signal Circuit >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

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

      Is the inspection result normal? 

      YES: GO TO 2

      NO: Repair or replace terminals or connectors.

  2. CHECK FUEL LEVEL SENSOR UNIT AND FUEL PUMP (FUEL LEVEL SENSOR) CIRCUIT 
    1. Disconnect combination meter connector and fuel level sensor unit and fuel pump (fuel level sensor) connector.
    2. Check continuity between combination meter harness connector (B) and fuel level sensor unit and fuel pump (fuel level sensor) harness connector (A).
      A B Continuity
      Connector Terminal Connector Terminal
      C5 2 M24 15 Yes
      Fig 1: Checking Continuity Between Combination Meter Connector And Fuel Level Sensor Unit And Fuel Pump Connector
      G04903765Courtesy of NISSAN NORTH AMERICA, INC.
    3. Check continuity between fuel level sensor unit and fuel pump (fuel level sensor) harness connector (A) and ground.
      A Ground Continuity
      Connector Terminal
      C5 2 No

      Is the inspection result normal? 

      YES: GO TO 3

      NO: Repair harness or connector.

  3. CHECK FUEL LEVEL SENSOR UNIT AND FUEL PUMP (FUEL LEVEL SENSOR) GROUND CIRCUIT 
    1. Check continuity between combination meter harness connector (B) and fuel level sensor unit and fuel pump (fuel level sensor) harness connector (A).
      A B Continuity
      Connector Terminal Connector Terminal
      C5 5 M24 16 Yes
      Fig 2: Checking Continuity Between Combination Meter Connector And Fuel Level Sensor Unit And Fuel Pump Connector
      G04903766Courtesy of NISSAN NORTH AMERICA, INC.
    2. Check continuity between fuel level sensor unit and fuel pump (fuel level sensor) harness connector (A) and ground.
      A Ground Continuity
      Connector Terminal
      C5 5 No

      Is the inspection result normal? 

      YES: GO TO 4

      NO: Repair harness or connector.

  4. CHECK INSTALLATION CONDITION 

    Check fuel level sensor unit and fuel pump (fuel level sensor) 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 and fuel pump (fuel level sensor) properly.

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