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Home >> Subaru >> 2017 >> Impreza Base, 4D Sedan, Automatic CVT Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System >> Fuel Level Sensor >> Inspection
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Fuel Level Sensor: Inspection

  1. Check that the fuel level sensor has no damage.
  2. Measure the fuel level sensor float position.
    NOTE: When inspecting the fuel level sensor, perform the work with the sensor installed to the fuel pump.
    Fig 1: Measuring Fuel Level Sensor Float Position
    G11252961Courtesy of SUBARU OF AMERICA, INC.
    Float position Standard
    FULL - Fuel tank seating surface (A) 198.9 ± 3.5 mm (7.831 ± 0.157 in)
    EMPTY - Fuel tank seating surface (B) 23.2 ± 3.5 mm (0.913 ± 0.157 in)
  3. Check the resistance between fuel level sensor terminals by the connector on top of the fuel pump.
    Fig 2: Checking Fuel Level Sensor Terminals Resistance
    G11252962Courtesy of SUBARU OF AMERICA, INC.
    Float position Terminal No. Standard
    FULL (A) 1 and 2 17.4±2.0Ω
    EMPTY (B) 410.0±4.5Ω
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