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Home >> Hyundai >> 2016 >> Azera Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle System Diagnosis >> DTC U0001: High Speed CAN Communication Bus off >> Scantool Diagnostics >> Monitor GDS Data
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Monitor GDS Data

  1. Connect GDS to Data Link Connector (DLC).
  2. Ignition "ON" & engine "OFF".
  3. Select "Current Data" mode and monitor "Inhibitor switch" parameter.
  4. Monitor the "CAN COMMUNICATION SERVICE DATA (ENGINE RPM, VEHICLE SPEED SENSOR, THROTTLE P. SENSOR)" parameters on the GDS.
    Fig 1: Display - CAN Communication Service Data Screen (Low RPM)
    G10371673Courtesy of HYUNDAI MOTOR AMERICA
    Fig 2: Display - CAN Communication Service Data Screen (High RPM)
    G10371674Courtesy of HYUNDAI MOTOR AMERICA
  5. Is measured current data within specification?

    YES 

    • Fault is intermittent caused by poor contact between PCM/TCM and Sensor, and DTC was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair as necessary and go to "VERIFICATION VEHICLE REPAIR " procedure.

    NO 

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