WARNING: This page is about a different car, the 2018 Kia Cadenza. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Screen Display - CVVT Oil Control Valve Signal Waveform (1 Of 2)
Courtesy of KIA MOTORS AMERICA, INC.
Fig 2: Screen Display - CVVT Oil Control Valve Signal Waveform (2 Of 2)