Check For Poor Ground

WARNING: This page is about a different car, the 2018 Kia Forte5 and 2018 Kia Forte. However, it is still accessible from the selected car via links, so may be relevant.

Check for continuity between terminal 4 of the Data Link Connector and ground point.
YES
- Replace the ESC Control Module and recheck.
NO
- Repair an open in the wire or poor ground
Fig 1: Checking For Continuity Between Terminal 4 Of Data Link Connector And Ground Point
Courtesy of KIA MOTORS AMERICA, INC.

When Ignition Key Is Turned ON (Engine OFF), The ABS Warning Lamp Does Not Light UP.