July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

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 Ground Circuit
  Courtesy of KIA MOTORS AMERICA, INC.