Hyundai Santa Fe: Rear Heater / Rear Power Mosfet. Repair procedures

Hyundai Santa Fe (TM) 2019-2025 Service Manual / Heating,Ventilation And Air Conditioning / Rear Heater / Rear Power Mosfet. Repair procedures

Inspection

1.	Turn the ignition switch ON.

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

Select the control switch to raise the voltage until it reaches high speed.

Specification

Fan	Motor Voltage
Fan	Manual
First speed	3.8 ± 0.5V
Second speed	5.0 ± 0.5V
Third speed	6.2 ± 0.5V
Fourth speed	7.4 ± 0.5V
Fifth speed	8.6 ± 0.5V
Sixth speed	9.8 ± 0.5V
Seventh speed	11.0 ± 0.5V
Eighth speed	Battery (+)

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

5.	Replace the power mosfet if it is proved that there is a problem with it.

Replacement

1.	Disconnect the negative (-) battery terminal.

2.	Remove the luggage side trim [RH]. (Refer to Body -"Luggage Side Trim")

3.	Separate the connector and loosen the mounting screw ,remove the power mosfet (A).

4.	Install in the reverse order of removal.

Rear Blower Motor. Repair procedures

Replacement 1. Disconnect the negative (-) battery terminal. 2. Remove the luggage side trim [RH]...

Controller

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