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Home >> Kia >> 2020 >> Optima EX Premium >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 52 (Fuel Delivery System - 2.4L (Except HEV)) >> Fuel Sender >> Repair Procedures >> Inspection

Repair Procedures: Inspection

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  1. Turn the ignition switch OFF, and then remove battery (-) terminal.
  2. Remove the fuel pump assembly.

    (Refer to Fuel Pump- "REMOVAL ")

  3. Using an ohmmeter, measure the resistance between terminals 1 and 6 of sender connector (A) at each float level.
    G12932898Courtesy of KIA MOTORS AMERICA, INC.
    Pin No. Description
    1 Fuel sender ground (-)
    2 Fuel pressure sensor (FPS) signal input
    3 CAN [High]
    4 Fuel pressure sensor (FPS) power supply (+5V)
    5 Fuel pressure sensor (FPS) ground (-)
    6 Fuel sender signal input (+)
    7 -
    8 CAN [Low]
    9 Ground
    10 Battery power (B+)
  4. Also check that the resistance changes smoothly when the float is moved from "E" to "F".
Position Resistance (Ω)
E 298-305
1/2 80-84
F 14-16