Repair procedures: Inspection

WARNING: This page is about a different car, the 2013 Hyundai Tucson and 2012 Hyundai Tucson. However, it is still accessible from the selected car via links, so may be relevant.

Ignition "ON"
Manually operate the control switch and measure the voltage of blower motor.

Select the control switch to raise voltage until high speed.

Fig 1: Measuring Voltage Of Blower Motor

Courtesy of HYUNDAI MOTOR CO.

Specification

MOTOR VOLTAGE SPECIFICATIONS

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

*AUTO COOLING: Auto speed (4.5 V ~ B+)

*AUTO HEATING: Auto speed (4.5 V ~ 11.0 V)

If the measured voltage is not specification, substitute with a known-good power mosfet and check for proper operation.
If the problem is corrected, replace the power mosfet.