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 3 of the ABS control module harness side connector and body ground.
Specification: approximately B+
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. Repair if necessary.
  
  Fig 1: Measuring Voltage Between Terminal 3 Of ABS Control Module Harness Side Connector & Body Ground
  Courtesy of HYUNDAI MOTOR CO.