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Home >> Hyundai >> 2017 >> Sonata Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 39 (Engine Control System Diagnosis - 1.6L (2 Of 3) (Except HEV)) >> DTC P0271: Cylinder 4 Injector Circuit High >> Wiring Inspection >> Control Circuit Inspection

Control Circuit Inspection

WARNING: This page is about a different variant/trim than selected.
  1. IG KEY "OFF".
  2. Disconnect injector connector.
  3. IG KEY "ON" & ENG "OFF".
  4. Measure the voltage between both ends of the High side control harness.

    Measure the voltage between both ends of the Low side control harness.

    Specification:  Approx 0 V

  5. Is the measured voltage within specification?

    YES 

    NO