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Home >> Hyundai >> 2008 >> Tucson GLS, Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle System >> DTC Troubleshooting Procedure >> DTC U0001 Can Communication Bus Off >> Monitor SCANTOOL Data

Monitor SCANTOOL Data

  1. Connect scantool to data link connector (DLC).
  2. Engine "ON".
  3. Monitor the "CAN COMMUNICATION SERVICE DATA (ENGINE RPM, VEHICLE SPEED SENSOR, THROTTLE P. SENSOR" parameters on the scantool.
  4. Compare with reference data shown below (Fig 1):
    Fig 1: Scan Tool Display (Engine RPM)
    G04811345Courtesy of HYUNDAI MOTOR CO.
  5. Does CAN BUS LINE DATA" follow the reference data?

    YES  : → Fault is intermittent caused by poor contact in the sensor's and/or TCM's connector or was repaired and TCM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR" procedure.

    NO  : → Go to "TERMINAL & CONNECTOR INSPECTION" procedure.

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