4. Inspect The Stop Lamp Circuit
WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
Connect probe to each terminal wire and confirm oscilloscope waveform.
[Stop Lamp Switch Input/Output]
 Courtesy of HYUNDAI MOTOR AMERICA
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[Oscilloscope Waveform Screen]
 Courtesy of HYUNDAI MOTOR AMERICA
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