Heating, Ventilation, and Air Conditioning
Mode Control Actuator Repair Procedures
In this manual: Heating, Ventilation, and Air Conditioning
12steps
~72min
3/5difficulty
Done 0 of 12
Inspection
- Turn the ignition off.
- Disconnect the mode control actuator connector.
- Make sure the mode control actuator moves to the defrost position when 12 V is applied to terminal 3 and ground terminal 4. Make sure the mode control actuator moves to the vent position when the connections are reversed.

1. -
2. -
3. Defrost Mode
4. Vent Mode5. Sensor Ground
6. Feedback Signal
7. Sensor (+5V) - Connect the mode control actuator connector.
- Turn the ignition on.
- Check the voltage between terminals 6 and 5. Specification
Door Position Voltage (V) Fault Detection vent 0,3±0,15 Low voltage: 0.1 V or less Defrost 4,7±0,15 High voltage: 4.9 V or more
It will report the current actuator position to the controls. - If the measured voltage does not meet the specification, replace the mode actuator with a genuine part and check the operation.
- Replace the mode actuator if it is determined to be faulty.
Replacement
- Disconnect the negative (-) battery terminal.
- Remove the main crash pad. (Refer to Body - "Crash Pad")
- Disconnect the connector (A), then remove the mode control actuator (B) after loosening the mounting screws.

- Install in the reverse order of removal.
Test yourself
A quick Hyundai Genesis DH quiz: every answer comes with an explanation and a link to the manual page.
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