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Home >> Hyundai >> 2006 >> Tucson GLS, FWD >> 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) >> Component Inspection

Component Inspection

  1. Ignition "OFF"
  2. Measure resistance between terminals 36 and 37 of the ECM connector (to ECM side)

    Specification: Approx. 110~130Ω

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

    YES  : --> Check for poor connection between ECM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO  : --> Check ECM for contamination, deterioration, or damage. Substitute with a known-good ECM and check for proper operation. If the problem is corrected, replace ECM and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

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