Check the Power Source of ABS Control Module

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 And Body Ground
Courtesy of KIA MOTORS AMERICA, INC.
Is voltage within specification?
YES
- Check for poor ground.
NO
- Check the harness or connector between the fuse (10A) in the engine compartment junction block and the ABS control module. Remedy if necessary.