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Home >> Kia >> 2017 >> Forte EX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis - 2.0L GDI (1 Of 3) >> DTC P0091: Fuel Pressure Regulator 1 Control Circuit Low >> Wiring Inspection >> Control Circuit Inspection

Control Circuit Inspection

■ Check Open or Short in FPR circuit

  1. IG KEY "OFF".
  2. Disconnect FPR connector.
  3. IG KEY "ON" & ENG "OFF"
  4. Measure the voltage between FPR open, FPR close terminal of FPR harness connector and chassis ground.

    Specification  :

    FPR open Terminal: Approx. 0~0.6V

    FPR close Terminal: Approx. 0.6V

  5. Is the measured voltage within specification?

    YES 

    NO