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Home >> Hyundai >> 2012 >> Veracruz GLS, AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle System Diagnosis >> DTC U0121: Lost Communication With ABS >> Scan Tool Diagnostics >> Scan Tool Diagnostics >> Monitor Scan Tool Data

Monitor Scan Tool Data

  1. Connect scan tool 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 scan tool
    Fig 1: Monitoring CAN Communication Service Data (Engine RPM, Vehicle Speed Sensor, Throttle P. Sensor) Parameters On Scan Tool - Low-RPM
    G06861293Courtesy of HYUNDAI MOTOR CO.
    Fig 2: Monitoring CAN Communication Service Data (Engine RPM, Vehicle Speed Sensor, Throttle P. Sensor) Parameters On Scan Tool - High-RPM
    G06861294Courtesy of HYUNDAI MOTOR CO.
  4. Does "CAN BUS LINE DATA" follow the reference data?

    YES

    1. Fault is intermittent caused by poor contact in the sensor's and/or TCM (PCM)'s connector or was repaired and TCM (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 VEHICLE REPAIR  procedure.

    NO

    1. Go to W/ HARNESS INSPECTION  procedure
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