Hyundai Tucson: Blower / Power Mosfet Repair procedures

Inspection
1.
Ignition "ON"
2.
2. Manually operate the control switch and measure the voltage of blower motor.
3.
Select the control switch to raise voltage until high speed.

Specification
Fan
Motor Voltage
Manual
First speed
4.0 ±0.5V
Second speed
5.1 ±0.5V
Third speed
6.2 ±0.5V
Fourth speed
7.4 ±0.5V
Fifth speed
8.6 ±0.5V
Sixth speed
9.7 ±0.5V
Seventh speed
10.8 ±0.5V
eighth speed
Battery

*AUTO COOLING: Auto speed (4.5V~B+)
*AUTO HEATING: Auto speed (4.5V~11.0V)
4.
If the measured voltage is not specification, substitute with a known-good power mosfet and check for proper operation.
5.
If the problem is corrected, replace the power mosfet.
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.
Install in the reverse order of removal.
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