Component Inspection

ESC switch Check
1. Ignition "OFF" & Engine "OFF".
2. Disconnect the ESC switch connector.
3. Measure resistance between power terminal and signal terminal of the ESC switch connector.
  Specification: Approx. below 1Ω - (In case of pressing the ESC switch)
  
  Approx. ∞ Ω - (In case of not pressing the ESC switch)
  
  Fig 1: Measuring Resistance Between Power Terminal & Signal Terminal Of ESC Switch Connector
  Courtesy of KIA MOTORS AMERICA, INC.
4. Is the measured value within specifications?
  YES
  - Fault is intermittent caused by poor connection in ESC switch harness and/or HECUs connector. Go to VERIFICATION OF VEHICLE REPAIR procedure.
  NO
  - Substitute with a known-good ESC switch and check for proper operation. If problem is corrected, replace ESC switch and then go to VERIFICATION OF VEHICLE REPAIR procedure.