Kia Sorento: Auto Defogging Actuator Inspection

Kia Sorento (MQ4, 2021-2026) Service Manual / Heating,Ventilation And Air Conditioning / Heater / Auto Defogging Actuator Inspection

Inspection

IG OFF.

2.	Disconnect the auto defogging actuator connector. (Refer to Auto Defogging Actuator - "Removal and Installation")

3.	Apply voltage to the auto defogging actuator 3 terminal and ground the 7 terminal to check whether the actuator operates.

When connecting in the opposite, check if it operates in reverse.

Heating,Ventilation And Air Conditioning — Heater / Auto Defogging Actuator / Inspection illustration

1. -
2. -
3. DEF (closed)
4. Sensor Ground

5. Feedback Signal
6. Sensor power (5 V)
4. DEF (open)

5.	Connect the auto defogging actuator connector.

IG ON.

Measure the voltage of the 4 - 5 terminal.

Door Position	Voltage (V)	Error Detection
DEF closed	0.3 ± 0.15	Low voltage: less than 0.1 V
DEF open	4.7 ± 0.15	High voltage: over 4.9 V

* Feedback the current position of the actuator to the control.

8.	If the measured voltage does not match the specifications, replace it with a new auto defogging actuator.

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Kia Sorento: Auto Defogging Actuator Inspection

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