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Home >> Hyundai >> 2021 >> Ioniq Hybrid SEL >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> HCU/Low Dc-Dc Converter Diagnosis (HEV) >> DTC P0504: Brake Switch "A"/"B" Correlation >> DTC Inspection >> Monitor GDS Data

Monitor GDS Data

  1. Ignition ON (SSB LED "BLUE") & Vehicle "STOP".
  2. Connect GDS and select "Data Analysis" mode.
  3. Select "Current Data"mode and monitor "Brake Switch ON_NO" and "Brake Switch ON_NC" parameter.
    G13841249Courtesy of HYUNDAI MOTOR AMERICA
    G13841250Courtesy of HYUNDAI MOTOR AMERICA
  4. Is the measured data within specifications?

    YES 

    NO