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Hyundai Equus: Power Mosfet Repair procedures - Blower - Heating, Ventilation and Air Conditioning - Hyundai Equus VI 2009-2024 Service ManualHyundai Equus: 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.
3.
Select the control switch to raise the voltage until high speed.

Specification
Fan Speed (Manual)
Motor Voltage (V)
1
3.4 ± 0.5 (A/C OFF)
3.8 ± 0.5 (A/C ON)
2
4.6 ± 0.5
3
5.6 ± 0.5
4
6.8 ± 0.5
5
7.8 ± 0.5
6
9.0 ± 0.5
7
10.2 ± 0.5
8
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 cowl side trim.
(Refer to Body - "Cowl Side Trim")
3.
To remove the crash pad under cover [RH] (A), press both sides of the locking pin and then pull it down.

4.
Disconnect the under lamp connector (A).

5.
Disconnect the power mosfet connector (A) and then remove the power mosfet (B) after loosening the mounting screws.

6.
Install in the reverse order of removal.
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