Hyundai Azera: Power Mosfet Repair procedures

Fifth generation HG (2011–2025) / Hyundai Azera 2011-2025 Service Manual / Heating,Ventilation, Air Conditioning / Blower / Power Mosfet Repair procedures

Inspection

1.	Ignition "ON"

2.	Manually operate the control switch and measure the voltage of blower motor.

Select the control switch to raise voltage until high speed.

1. Drain
2. Drain F/B

3. Source
4. Gate

Specification

Fan	Motor Voltage
Fan	Manual
First speed	3.4 ±0.5V
Second speed	4.6 ±0.5V
Third speed	5.9 ±0.5V
Fourth speed	7.2 ±0.5V
Fifth speed	8.3 ±0.5V
Sixth speed	9.5 ±0.5V
Seventh speed	11.3 ±0.5V
eighth speed	Battery

*AUTO COOLING: Auto speed (4.5V~B+)

*AUTO HEATING: Auto speed (4.5V~11.3V)

4.	If the measured voltage is not specification, substitute with a known-good power mosfet and check for proper operation.

5.	If the problem is corrected, replace the power mosfet.

Replacement

1.	Disconnect the negative (-) battery terminal.

2.	Remove the crash pad lower cover (A) and then disconnect the connector (B).

3.	Disconnect the power mosfet connector (A) and then remove the power mosfet (B) after loosening the mounting screws.

4.	Installation is the reverse order of removal.

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