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Hyundai Tucson: Mode control actuator

Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual / Heating, Ventilation and Air Conditioning (HVAC) / Heater / Mode control actuator

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. Vent mode
  5. Sensor ground
  6. Feedback signal
  7. Sensor (+ 5V)
  1. Connect the mode control actuator connector.
  2. Turn the ignition switch ON.
  3. Check the voltage between terminal 5 and 4.

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

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

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

    (Refer to Engine Electrical System - "DC DC converter")

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

  1. Install in the reverse order of removal.

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 module receives a signal from the sensor and restrains moisture and eliminates defog by the intake actuator, A/C, auto defogging actuator, blower motor rpm and mode actuator.

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