Check The Ground Circuit

Disconnect the connector from the ESC control module.
Check for continuity between terminals 13, 38 of the ESC control module harness side connector and ground point. Is there continuity?
YES
- Check the wheel speed sensor circuit.
NO
- Repair an open in the wire and ground point.
  
  Fig 1: Checking Continuity Between Terminals 13, 38 Of ESC Control Module Connector And Ground Point
  Courtesy of KIA MOTORS AMERICA, INC.