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Home >> Hyundai >> 2004 >> Elantra GLS, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel System >> DTC Trouble Shooting Procedures >> DTC P0271: Cylinder 4 - Injector Circuit High Input >> Inspection Procedures >> 6. Check For Open In Harness

6. Check For Open In Harness

  1. Turn ignition switch to OFF position and keep the injector and ECM connectors disconnected.
  2. Measure resistance between terminal 2 of the injector harness connector and 23 of the ECM harness connector.
    Fig 1: Checking Fuel Injector Harness For Open Circuit
    G00749319Courtesy of HYUNDAI MOTOR CO.
    • Specification: below 1° 

Does resistance indicate continuity? 

Yes: Proceed with ECM problem procedure.

No: Repair open in harness.

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