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Home >> Kia >> 2009 >> Rio Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> DTC Troubleshooting Procedures (2 Of 2) >> DTC U0101 Can Communication Bus With TCU (Timeout) >> Monitor Scan Tool Data
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Monitor Scan Tool Data

  1. Connect scan tool to Data Link Connector (DLC).
  2. Warm up the engine to normal operating temperature.
  3. Monitor the "CAN" parameters on the scan tool.
    • Check "Transaxle type, Torque control request, etc" at the ECU service data mode.
    • Check "TPS, RPM, IDLE STATE, etc" at the TCU service data mode.
  4. Are the parameters displayed correctly?

    YES 

    • Fault is intermittent caused by poor contact in the sensor's and/or ECM/PCM's connector or was repaired and ECM/PCM 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 

    • Substitute with a known-good ECM/PCM and check for proper operation. If the problem is corrected, replace ECM/PCM and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
    NOTE: There is a memory reset function on scan tool that can erase optional parts automatically detected and memorized by ECM/PCM.
    Before or after testing ECM/PCM on the vehicle, use this function to reuse the ECM/PCM
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