Hyundai Tucson: Blower / Power Mosfet Repair procedures

Hyundai Tucson (LM) 2010-2015 Service Manual / Heating, Ventilation and Air Conditioning / Blower / Power Mosfet Repair procedures

Inspection

1.	Ignition "ON"

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

Select the control switch to raise voltage until high speed.

Specification

Fan	Motor Voltage
Fan	Manual
First speed	4.0 ±0.5V
Second speed	5.1 ±0.5V
Third speed	6.2 ±0.5V
Fourth speed	7.4 ±0.5V
Fifth speed	8.6 ±0.5V
Sixth speed	9.7 ±0.5V
Seventh speed	10.8 ±0.5V
eighth speed	Battery

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

*AUTO HEATING: Auto speed (4.5V~11.0V)

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

3.	Install in the reverse order of removal.

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