Hyundai Elantra (CN7): Blower / Power Mosfet

Hyundai Elantra (CN7) 2021-2026 Service Manual / Heating, Ventilation and Air Conditioning / Blower / Power Mosfet

Description and operation

Description

It is installed to the DATC and adjusts the fan rpm by precisely controlling the voltage applied to the blower motor.

Repair procedures

Inspection

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

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

Fan Speed	Motor Voltage (V) (Manual)
1	3.8
2	5
3	6.1
4	7.3
5	8.5
6	9.7
7	10.9
8	Battery +

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.	To install, reverse the removal procedure.

❮Blower Motor

Repair procedures Inspection1.Connect the battery voltage and check the blower motor rotation.Replacement1.Disconnect the negative (-) battery terminal.

Blower Resistor (Manual)❯

Repair procedures Inspection1.Measure the resistance between the terminals.2.The measured resistance is not within specification, the blower resistor must be replaced.

Other information:

Hyundai Elantra (CN7) 2021-2026 Service Manual: Rheostat

Components and components location Components Repair procedures Replacement1.Disconnect the negative (-) battery terminal.2.Remove the crash pad lower panel (A).(Refer to Body - "Crash Pad Lower Panel")3.Loosen the mounting screw and remove the crash pad lower switch (A).

Hyundai Elantra (CN7) 2021-2026 Service Manual: Description and operation