Kia Optima: Blower / Power Mosfet

Kia Optima DL3 2019-2021 Service and Repair Manual / Heating, Ventilation and Air Conditioning / Blower / Power Mosfet

Description and operation
Description

It is installed to the DATC and adjusts the fan rpm by precisely controlling the voltage applied to the blower motor.

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.

Replacement
1.

Disconnect the negative (-) battery terminal.

2.

Remove the crash pad under cover (A).

3.

Separate the connector (A), loosen the mounting screws and remove the power mosfet (B).

4.

To install, reverse the removal procedure.

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