Hyundai Elantra: Blower / Power Mosfet
Description and operation
It is installed to the DATC and adjusts the fan rpm by precisely controlling the voltage applied to the blower motor.
Repair procedures
1. | Manually operate the control switch and measure the voltage of the blower motor. |
2. | 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 +
|
|
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. |
Repair procedures
Inspection1.Connect the battery voltage and check the blower motor rotation.Replacement1.Disconnect the negative (-) battery terminal...
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:
Repair procedures
Disassembly
•
Use fender covers to avoid damaging painted surfaces.•
To avoid damage, unplug the wiring connectors carefully while holding the connector portion.
•
Mark all wiring connector and hoses to avoid misconnection...
Repair procedures
Inspection 1.Disconnect the negative (-) battery terminal.2.Remove the roof trim.(Refer to Body - "Roof Trim")3.Disconnect the sunroof motor (A) connector.4.Ground the terminals as below table, and check that the sunroof unit operates...