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Home >> Subaru >> 2017 >> Outback 2.5i >> Repair and Diagnosis (Single Page) >> Engine Performance >> Engine Control Systems >> Fuel Injection System (H4DO) >> 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
    G11566069Courtesy of SUBARU OF AMERICA, INC.
    Float position Standard
    FULL to Fuel tank seating surface (A) 133.0±4 mm (5.236±0.157 in)
    EMPTY to Fuel tank seating surface (B) 21.6±4 mm (0.850±0.157 in)
  3. Check the resistance between fuel level sensor terminals by the connector on top of the fuel pump.
Fig 2: Checking Resistance Of Fuel Level Sensor Terminals
G10262275Courtesy of SUBARU OF AMERICA, INC.
Float position Terminal No. Standard
FULL (A) 1 and 4 8.7±1.0 Ω
EMPTY (B) 139.1±2.0 Ω