Hyundai Palisade: Heater / Mode Control Actuator

Hyundai Palisade (LX2) 2020-2024 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.
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.

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.
6.
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

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).

Hyundai Palisade. Repair procedures

4.
Install in the reverse order of removal.

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