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Home >> Hyundai >> 2021 >> Ioniq Hybrid SEL >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Active Air Flap-Left Diagnosis (HEV) >> DTC U0100: Lost Communication With ECM/PCM 'A' >> DTC Inspection >> Monitor GDS Data

Monitor GDS Data

  1. Connect GDS to Data Link Connector (DLC)
  2. Engine "ON".
  3. Warm-up until engine temperature reaches at normal temperature in EV mode with engine start condition.
  4. Using GDS, check if there is an error in Engine system.

    If there is an error in Engine system, first do a troubleshooting for those system and then check A.A.F system.

  5. Is the same DTC displayed again?

    YES 

    NO 

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