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Home >> Kia >> 2012 >> Optima LX, Automatic Trans >> Repair and Diagnosis (Single Page) >> Electrical >> Gauges >> Indicators & Gauges - Except HEV >> Instrument Cluster >> Repair Procedures >> Inspection >> Main Fuel Gauge Sender

Main Fuel Gauge Sender

  1. Using an ohmmeter, measure the resistance between terminals 1 and 3 of sender connector (A) at each float level.
    Fig 1: Fuel Sender Connector End View (Sender Side)
    G07380848Courtesy of KIA MOTORS AMERICA, INC.
    MAIN FUEL GAUGE SENDER DESCRIPTION CHART

    NO Description
    1 Gauge signal GND
    2 -
    3 Gauge signal (+)
    4 Fuel pump (+)
    5 Fuel pump GND
    - -
  2. Also check that the resistance changes smoothly when the float is moved from "E" to "F"

    General 

    LITER RESISTANCE REFERENCE CHART

    Position Liter (l  ) U.S.gal. Resistance (Ω)
    Sender (E) 5 1.32 200 +5 / -2Ω
    Warning lamp ON 8.5 2.24 170 ± 2Ω
    1/2 37.5 9.9 66 ± 1Ω
    Sender (F) 68 17.96 8 ± 2Ω

    Supervision 

    POSITION SEGMENT RESISTANCE REFERENCE CHART

    Position Segment Resistance (Ω)
    Sender (E) 1 segment 184Ω
    Warning lamp ON 2 segment 146.7Ω
    1/2 6 segment 72.7Ω
    Sender (F) 12 segment 15Ω
  3. If the height resistance is unsatisfied, replace the fuel sender as an assembly.
    CAUTION: After completing this test, wipe the sender dry and reinstall it in the fuel tank.
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