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Home >> Subaru >> 2017 >> WRX STI Limited >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System (2.5L) >> Fuel Sub Level Sensor >> Inspection
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Fuel Sub Level Sensor: Inspection

  1. Check that the fuel sub level sensor has no damage.
  2. Measure the fuel sub level sensor float position.
    Fig 1: Fuel Sub Level Sensor Float Positions
    G11571701Courtesy of SUBARU OF AMERICA, INC.
    Float position Standard
    FULL to Datum point (A) 5.31±3.5 mm (0.209±0.138 in)
    EMPTY to Datum point (B) 160.6±3.5 mm (6.323±0.138 in)
  3. Measure the resistance between fuel sub level sensor terminals.
    Fig 2: Measuring Resistance Between Fuel Sub Level Sensor Terminals
    G06344829Courtesy of SUBARU OF AMERICA, INC.
    Float position Terminal No. Standard
    FULL (A) 1 and 2 8.7±1.0 Ω
    EMPTY (B) 270.9±4.0 Ω