Kia Rio: Blower / Power Mosfet (FATC)

Kia Rio 2017-2023 YB Service Manual / Heating,Ventilation, Air Conditioning / Blower / Power Mosfet (FATC)

Repair procedures

Inspection
1.

Turn the ignition switch ON.

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 Speed (Manual)
Motor Voltage (V)
1
3.75 ± 0.5
2
4.76 ± 0.5
3
6.87 ± 0.5
4
6.99 ± 0.5
5
8.11 ± 0.5
6
9.23 ± 0.5
7
10.63 ± 0.5
8
Battery

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

*AUTO HEATING: Auto speed (4.5V~10.5V)

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

3.

Installation is the reverse order of removal.

    Repair procedures Inspection 1. Measure the resistance between the terminals. 2. The measured resistance is not within specification, the blower resistor must be replaced.

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