2. KDS Data Analysis

WARNING: This page is about a different car, the 2018 Kia Cadenza. However, it is still accessible from the selected car via links, so may be relevant.

Analyze KDS data and check for any abnormality with the stop lamp switch.
1. Connect the KDS to the self-diagnosis connector.
2. Turn the spark switch on.
3. Step on the brake pedal.
4. Inspect the "brake switch" category that displays the "sensor data" KDS.)
  Normal waveform: The pressure sensor signal value will change according to the brake ON/OFF switch.
  
  Fig 1: Scantool Display - Normal Waveform
  Courtesy of KIA MOTORS AMERICA, INC.