Hyundai Elantra (CN7): Blower / Power Mosfet

Hyundai Elantra (CN7) 2021-2025 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) 2021-2025 Service Manual: Antenna Coil

Repair procedures Removal1.Disconnect the negative (-) battery terminal.2.Remove the crash pad lower panel.(Refer to Body - "Crash Pad Lower Panel")3.Remove the steering column shroud panel.(Refer to Body - "Steering Column Shroud Panel")4.Disconnect the immobilizer connector (A) and press the locking pin (B) using an awl.

Hyundai Elantra (CN7) 2021-2025 Service Manual: Desctiprion and operation