Raise the vehicle on a lift so that the drive wheels are off the ground.
Fig. 3.74. Holes for connecting a pressure gauge
Connect the special devices (adapter and pressure gauge) to the appropriate holes to check the pressure (Fig. 3.74).
Measure the automatic transmission fluid (ATF) pressure in each line under the conditions given in table 3.14, and check that the measured values correspond to the nominal values.
If the measured pressure is outside the standard values, troubleshoot according to table 3.15.
[Information is taken from a thematic website HYUNDAIBOOK.RU]