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Home >> Hyundai >> 2017 >> Tucson Value, 4WD >> Repair and Diagnosis >> Transmission >> Transfer Case >> 4WD Control System Diagnosis >> DTC U0121: Lost Communication With Anti-Lock Brake System (ABS) Control Module >> DTC Inspection >> Monitor GDS Data

Monitor GDS Data

  1. Connect scantool to Data Link Connector (DLC).
  2. Warm up the engine to normal operating temperature.
  3. Using scantool, check if there is an error in ESP/ESC/VDC system.

    If there is an error in ABS/ESC system, first do a troubleshooting for those system and then check 4WD system.

  4. Is the same DTC displayed again?

    YES 

    • Go to next procedure.

    NO 

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