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Home >> Hyundai >> 2017 >> Sonata Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 32 (Engine Control System Diagnosis - 2.0L (1 Of 3) (Except HEV)) >> DTC P0090: Fuel Pressure Regulator 1 Control Circuit Open >> Wiring Inspection >> Control Circuit Inspection

Control Circuit Inspection

WARNING: This page is about a different variant/trim than selected.
  1. IG "OFF".
  2. Disconnect the Fuel Pressure Regulator Valve (FPR) connector.
  3. IG "ON".
  4. Measure voltage between high/low terminal of Fuel Pressure Regulator Valve (FPR) harness connector and chassis ground.

    Specification:  High - approx. 4.3 V, Low - approx. 0.7 V

  5. Is voltage within specification?

    YES 

    • Go to "Component Inspection" as follows.

    NO