Hyundai Santa Cruz (NX4A OB) 2021-2025 Service Manual / Heating, Ventilation and Air Conditioning / Heater / Mode Control Actuator

Hyundai Santa Cruz: Heater / Mode Control Actuator

- Description The mode control actuator is located at the heater unit.It adjusts the position of the mode door by operating the mode control actuator based on the signal of the A/C control unit. Pressing the mode select switch makes the mode control actuator shift in order of Vent → Bi-Level → Floor → Mix. - Components Location

1. Mode control actuator

- Inspection

1.Turn the ignition switch OFF.

2.Disconnect the mode control actuator connector.

3.Verify that the mode control actuator operates to the defrost mode when connecting 12V to terminal 3 and grounding terminal 4.Verify that the mode control actuator operates to the vent mode when connected in reverse.

1. -
2. -
3. Defrost mode
4. Sensor ground
5. Feedback signal
6. Sensor (+ 5V)
7. Vent mode

4.Connect the mode control actuator connector.

5.Turn the ignition switch ON.

6.Check the voltage between terminal 5 and 4.

Door position	Voltage (V)	Error detecting
Vent	0.3 ± 0.15V	Low voltage : 0.1V or less High voltage : 4.9V or more
Defrost	3.29 ± 0.15V	Low voltage : 0.1V or less High voltage : 4.9V or more

* It will feedback the current position of the actuator to controls.

7.If the measured voltage is not within specification, substitute with a known-good mode control actuator and check for proper operation.

8.Replace the mode control actuator if it is proved that there is a problem with it.

- Replacement

1.Disconnect the negative (-) battery terminal.

2.Remove the main crash pad assembly.(Refer to Body (Interior and Exterior) - "Main Crash Pad Assembly")

3.Disconnect the connector (A) and loosen the mounting screw and remove the mode control actuator (B).

4.Install in the reverse order of removal.

Temperature Control Actuator

- Description The heater unit includes mode control actuator and temperature control actuator.The temperature control actuator is located at the heater unit. It regulates the temperature by the ...

Auto Defoging Actuator

- Description The auto defogging sensor is installed on the front window glass. The sensor judges and sends signal if moisture occurs to blow out wind for defogging. The air conditioner control ...

Other information:

Hyundai Santa Cruz (NX4A OB) 2021-2025 Service Manual: Troubleshooting
- Troubleshooting • Be careful not to short-circuit the wiring by the body or other wirings. • In case of discharging problem, measure dark current at all times. (Charging System - "Dark Current Inspection") • When checking the alternator main fuse, perform continu ...

Hyundai Santa Cruz (NX4A OB) 2021-2025 Service Manual: Daytime Running Light (DRL)
- Removal 1.Disconnect the negative (-) battery terminal. 2.Remove the front bumper assembly.(Refer to Body - "Front Bumper Assembly") 3.Loosen the mounting screws and remove the daytime running light (A). - Installation 1.Install the daytime running light and connect the connector. 2 ...