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Home >> Kia >> 2016 >> Optima LX >> Repair and Diagnosis (Single Page) >> Engine Performance >> Fuel Delivery >> Fuel Delivery System - 2.4L - Optima (Except HEV) >> Fuel Pump Control Module (FPCM) >> Repair Procedures >> Inspection

Repair Procedures: Inspection

  1. Connect the KDS/GDS to the vehicle's data link connector (DLC).
  2. Check any DTCs and if exist, repair according to the DTC guide.
  3. Check the power supply voltage provided to the fuel pressure sensor (FPS).

    Specification: 5V

    Fig 1: Checking Fuel Pressure Sensor Power Supply Voltage
    G11829915Courtesy of KIA MOTORS AMERICA, INC.
  4. Check the voltage provided to the fuel pressure sensor (FPS) at idle.

    Specification: 1.9 - 3.2 V

    Fig 2: Checking Fuel Pressure Sensor Voltage (Idle)
    G11829916Courtesy of KIA MOTORS AMERICA, INC.
  5. Check the fuel pressure in the low fuel line.

    (Refer to Fuel Pressure Test (Low pressure system)  Fuel Delivery System )

    Items Specification
    start Max. 600 KPa (Max. 6.1 kgf/cm2 , Max. 87.0 psi)
    in operation 350 - 500 KPa (3.5 - 5.1 kgf/cm2 , 50.7 - 72.5 psi)
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