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Home >> Kia >> 2015 >> Soul Base, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 2) - 1.6L >> DTC P0091: Fuel Pressure Regulator 1 Control Circuit Low >> Wiring Inspection >> Control Circuit Inspection
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Control Circuit Inspection

  1. IG KEY "OFF".
  2. Disconnect FPR connector.
  3. IG KEY "ON" & ENG "OFF".
  4. Measure voltage between Pin No. 1 (Low Control), Pin No. 2 (High Control) terminal of FPR harness connector and chassis ground.

    Specification: 

    FPR Low Terminal: Approx. 0V

    FPR High Terminal: Approx. 0.8V

  5. IG "OFF" & Disconnect PCM connector.
  6. Measure resistance between Pin No. 1 (Low Control), Pin No. 2 (High Control) terminal of the FPR.

    Specification: 

  7. Is the measured Value within specification?

    YES 

    NO