Check the Power Source Circuit

WARNING: This page is about a different car, the 2017 Kia K900. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the connector from the ABS control module.
Turn the ignition switch ON, measure the voltage between terminal 29 of the ABS control module harness side connector and body ground.
Specification: approximately B+

Fig 1: Measuring Voltage Between Terminal 29 Of ABS Control Module Connector And Body Ground
Courtesy of KIA MOTORS AMERICA, INC.
Is the voltage within specification?
YES
- Check the ground circuit.
NO
- Check the harness or connector between the fuse (10A) in the engine compartment junction block and the ABS control module. Remedy if necessary.