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Home >> Hyundai >> 2021 >> Ioniq Hybrid SEL >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Autonomous Emergency Braking (AEB) System Diagnosis (HEV) >> DTC C1646-81: CAN Message Failure - TCU >> DTC Inspection >> Monitor DTC Status

Monitor DTC Status

  1. Vehicle parked & Ignition switch 'ON'.
  2. Connect GDS and select "DTC Analysis" mode.
  3. Click "DTC Status" on the "Diagnostic Trouble Codes (DTC)" menu bar to see DTC's information.
  4. Confirm that "DTC Readiness Flag" indicates "COMPLETED". If not, drive the vehicle within conditions noted in the freeze frame data or enable conditions.
  5. Read "DTC Status" parameter.
    G13847069Courtesy of HYUNDAI MOTOR AMERICA
  6. Is parameter displayed "Present fault"?

    YES 

    • Select TCM system and check DTCs related with gear position system. If DTC is exist, repair as necessary, and then confirm clear.
    • Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO