Hyundai Palisade (LX2): Heater / Mode Control Actuator

Hyundai Palisade (LX2) 2020-2026 Service Manual / Heating,Ventilation And Air Conditioning / Heater / Mode Control Actuator

Description and operation

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 and components location

Components Location

Hyundai Palisade. Components and components location

1. Mode control actuator

Repair procedures

Inspection

1.	Turn the ignition switch OFF.

2.	Disconnect the mode control actuator connector.

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.

Hyundai Palisade. Repair procedures

1. -
2. -
3. Vent mode
4. Defrost mode

5. Sensor power (+5V)
6. Feedback signal
7. Sensor ground

4.	Connect the mode control actuator connector.

5.	Turn the ignition switch ON.

Check the voltage between terminal 5 and 4.

Specification

Door position	Voltage (V)	Error detecting
Vent	0.5 ± 0.15V	Low voltage : 0.1V or less High voltage : 5.0V or less
Defrost	4.5 ± 0.15V	Low voltage : 0.1V or less High voltage : 5.0V or less

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 - "Main Crash Pad Assembly")

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

4.	Install in the reverse order of removal.

❮Temperature Control Actuator

Description and operation Description The heater unit includes mode control actuator and temperature control actuator. The temperature control actuator is located at the heater unit.

Auto Defogging Actuator❯

Description and operation 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.

Other information:

Hyundai Palisade (LX2) 2020-2026 Service Manual: General safety information and caution

Instructions (R-134a) When Handling Refrigerant 1. R-134a liquid refrigerant is highly volatile. A drop on the skin of your hand could result in localized frostbite. When handling the refrigerant, be sure to wear gloves.

Hyundai Palisade (LX2) 2020-2026 Service Manual: Ultrasonic Sensor

Schematic diagrams Schematic Diagrams Repair procedures Removal 1. Remove the bumper cover. (Refer to Body - "Front Bumper Cover") (Refer to Body - "Rear Bumper Cover") 2.