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Home >> Kia >> 2017 >> Soul ! >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis - 1.6L T (1 Of 3) >> DTC P0090: Fuel Pressure Regulator 1 Control Circuit Open >> Wiring Inspection >> Control Circuit Inspection
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Control Circuit Inspection

  1. Ignition "OFF"
  2. Disconnect FPR connector.
  3. Ignition "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. Is the measured voltage within specification?

    YES 

    NO