Kia Forte: Power Mosfet Inspection

Second generation YD (2014-2018) / Kia Forte TD 2014-2018 Service Manual / Heating,Ventilation, Air Conditioning / Blower / Power Mosfet 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	Motor Voltage (V)
Fan Speed	Manual Fan Speed	Auto Fan Speed
1	3.4	Max. 4.5
2	4.9	4.5 ~ 5.5
3	6.1	5.5 ~ 6.7
4	7.2	6.7 ~ 7.7
5	8.3	7.7 ~ 8.9
6	9.5	8.9 ~ 10.1
7	11.3	10.1 ~ 11.3
8	B+

* Manual Fan Speed : 3.4V ~ B+

* Auto Fan Speed : 4.5V ~ B+

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.

Blower Motor Replacement

1. Disconnect the negative (-) battery terminal. 2. Disconnect the connector (A) of the blower motor. 3. Remove ...

Power Mosfet Replacement

1. Disconnect the negative (-) battery terminal. 2. Disconnect the power mosfet connector (A) and then remove the power mosfet (B) after lo ...

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