Repair Procedures: Inspection

WARNING: This page is about a different car, the 2018 Hyundai Accent. However, it is still accessible from the selected car via links, so may be relevant.

Turn the ignition switch OFF.
Disconnect the mode control actuator connector.

Verify that the mode control actuator operates to the defrost mode when connecting 12V to terminal 6 and grounding terminal 5. Verify that the mode control actuator operates to the vent mode when connected in reverse.

Courtesy of HYUNDAI MOTOR AMERICA

Pin NO	Function
1	-
2	-
3	Defrost mode
4	Sensor ground
5	Feedback signal
6	Sensor (+5V)
7	Vent mode

Connect the mode control actuator connector.
Turn the ignition switch ON.
Check the voltage between terminal 6 and 5.
If the measured voltage is not within specification, check the operation by replacing the existing mode control actuator with a new genuine part. After that, determine whether replacement of the temperature control actuator is required or not.