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Home >> Subaru >> 2021 >> WRX Limited, Automatic CVT Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System (2.0L) >> Fuel Sub Level Sensor >> Installation
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Fuel Sub Level Sensor: Installation

  1. Install the fuel sub level sensor to the fuel tank.
    1. Make sure the sealing portion is free from fuel or foreign matter before installation.
    2. Align the cut-out (B) as shown in the figure, and install the fuel sub level sensor upper plate cushion to the fuel sub level sensor upper plate.
    3. Align the cut-out of the fuel sub level sensor upper plate with the protrusion (B) of the fuel sub level sensor as shown in the figure, and install the fuel sub level sensor upper plate from the upper side of the fuel sub level sensor.
    4. Install the gasket from the lower side of the fuel sub level sensor so that the protrusion (B) of the fuel sub level sensor and the protrusion (A) of the gasket are positioned as shown in the figure.
      NOTE: Use a new gasket.
    5. Install the fuel sub level sensor to the fuel tank in the direction shown in the figure, and tighten the nuts to the specified torque in the order as shown in the figure.
      CAUTION: Set the arm and float of the fuel sub level sensor while paying attention to prevent them from contacting the fuel tank. If the arm of the fuel sub level sensor is bent, the fuel gauge may not read correctly.

      Tightening torque: 

      4.4 N.m (0.4 kgf-m, 3.2 ft-lb)

    Fig 1: Fuel Sub Level Sensor Nuts Tightening Sequence
    G13641282Courtesy of SUBARU OF AMERICA, INC.
  2. Install the fuel sub level sensor protector, and install the rubber cap (A).

    Tightening torque: 

    4.4 N.m (0.4 kgf-m, 3.2 ft-lb)

    G12444300Courtesy of SUBARU OF AMERICA, INC.
  3. Connect the quick connector of the jet pump tube.
    CAUTION:
    • Check that there is no damage or dust on the quick connector. If necessary, clean the seal surface of the pipe.
    • When connecting the quick connector, make sure to insert it all the way in before locking the slider.
    • When it is difficult to lock the slider, check that the connector is fully inserted.
    • After locking the slider, pull the quick connector itself to the disconnecting direction, and then push to the connecting direction in order to confirm secure connection. Make sure to end this check with a pushing step.
    NOTE: Connect the quick connector as shown in the figure.
    G13641284Courtesy of SUBARU OF AMERICA, INC.
    G08315556Courtesy of SUBARU OF AMERICA, INC.
  4. Connect the connector to the fuel sub level sensor.
    CAUTION: Before connecting, check that there are no foreign objects, water, etc. in the connectors of the fuel sub level sensor and harness. If any foreign objects and water are found, remove them with air blow and completely dry the connectors to connect.
    G08315488Courtesy of SUBARU OF AMERICA, INC.
  5. Install the service hole cover of fuel sub level sensor.
    G08315487Courtesy of SUBARU OF AMERICA, INC.
  6. Install the rear seat cushion. Refer to SEATS>REAR SEAT>INSTALLATION .
  7. Connect the ground terminal to battery sensor. Refer to NOTE>NOTE>BATTERY .
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