WARNING: This page is about a different car, the 2004 Hyundai XG350. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Checking ECT Sensor Harness Using Multi-Meter (1 Of 2)
Courtesy of HYUNDAI MOTOR CO.
Fig 2: Checking ECT Sensor Harness Using Multi-Meter (2 Of 2)