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Home >> Hyundai >> 2010 >> Genesis 4.6 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle System (6HP26) >> Troubleshooting For DTC >> DTC U0122: Lost Communication With Vehicle Dynamics Control Module >> Can >> Check open in CAN communication line

Check open in CAN communication line

  1. IG KEY OFF.
  2. Disconnect TCM, ECM and CLUSTER connector.
  3. Measure resistance between TCM CAN HIGH or CAN LOW and CLUSTER CAN HIGH or CAN LOW terminal.

    Specification:  Approx. 0Ω

  4. Is measured resistance within specifications?

    YES 

    • Substitute with a known-good VDC ECU and check for proper operation. If the problem is corrected, replace VDC ECU as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
    • Substitute with a known-good Mechatronics (E-module + Valvebody) and check for proper operation. If the problem is corrected, replace Mechatronics (E-module + Valvebody) as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

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