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Home >> Subaru >> 2012 >> Impreza WRX STi Limited >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System (WRX-STI) >> Fuel Sub Level Sensor >> Inspection

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: Checking Fuel Sub Level Sensor
    G07704613Courtesy of SUBARU OF AMERICA, INC.
    FLOAT POSITION REFERENCE CHART

    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±3.5mm (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
    G07704614Courtesy of SUBARU OF AMERICA, INC.
    TEMPERATURE RESISTANCE REFERENCE CHART

    Float position Terminal No. Standard
    FULL (A) 1 and 2 2.0+0-5-1.0 Ω
    EMPTY (B) 62.1±1.0 Ω
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