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Home >> Hyundai >> 2006 >> Tucson GLS, 4WD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel System (G6BA - GSL 2.7) >> DTC Troubleshooting Procedures >> DTC U0101 Serial Communication Problem With TCU (Timeout) >> Signal Circuit Inspection >> Check Can Communication Line For Open
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Check Can Communication Line For Open

  1. Ignition "OFF"
  2. Disconnect ECM harness connector.
  3. Measure resistance between terminals 36 and 37 of the ECM harness connector.

    Specification: Approx. 110~130Ω

    Fig 1: Measuring Resistance Between Terminals 36 And 37 Of ECM Harness Connector
    G04810176Courtesy of HYUNDAI MOTOR CO.
  4. Is resistance within the specification?

    YES  : --> Go to next step as below.

    NO  : --> Check for open in wiring related to the CAN communication. Repair as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

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