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Home >> Kia >> 2018 >> Sedona EX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 3) >> DTC P053F: Cold Start Fuel Pressure Performance >> Component Inspection >> Check fRPS performance

Check fRPS performance

  1. IG KEY "OFF".
  2. Connnect VMI CH A probe to FRPS signal terminal(Pin No. 2) of FRPS connector and CH B probe to TPS1 signal terminal(Pin No. 6) of FRPS connector.
  3. Warm up the engine to normal operating temperature.
  4. Measure signal waveform of FRPS and TPS1 together by stepping on and off the accellerator pedall.

    Specification:  Refer to figure below

    Fig 1: Screen Display - Normal Waveforms of FPRS & TPS1 During Acceleration
    G12284439Courtesy of KIA MOTORS AMERICA, INC.
  5. Does the FRPS operate properly? (Check variation)

    YES 

    NO 

    • Carefully re-do this troubleshooting guide steps.
    • If no problems were found with the circuits or connectors, replace the RPS and go to "VERIFICATION OF REPAIR " procedure.
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