Kia Stinger CK Quiz
Heating, Ventilation, and Air Conditioning

Defog Door Actuator

In this manual: Heating, Ventilation, and Air Conditioning
General Information — 8Maintenance — 27Engine Mechanical System — 47Engine Electrical System — 19Emission Control System — 12Engine Control System/Fuel System — 51Automatic Transmission System — 34All-Wheel Drive (AWD) System — 7Drive Shaft and Axle — 15Suspension System — 25Steering — 8Restraints — 19Brake System — 22Body (Interior and Exterior) — 47Front Seat Belt — 63Body Electrical System — 99Windshield Wiper/Washer — 11Heating, Ventilation, and Air Conditioning — 32
14steps
~84min
3/5difficulty
Done 0 of 14

Description and Operation

Description

Mounted on the windshield, the auto defog sensor evaluates and sends a signal to blow air when moisture is detected to prevent fogging. The air conditioning control module receives the signal from the sensor and removes moisture and prevents fogging by controlling the intake actuator, air conditioning, auto defog actuator, blower motor speed, and mode actuator.

Repair Procedures

Inspection

  1. Turn the ignition off.

  2. Disconnect the auto defog actuator connector.

  3. Verify that the auto defog actuator operates in the open position when 12 V is applied to terminal 4 and ground is applied to terminal 6.

    Check that the automatic defog actuator operates in the closed position when the connections are reversed.

    1. -
    2. -
    3. Open
    4. Sensor REF (+5V)    		 5. Feedback Signal
    6. Sensor Ground
    7. Close

  4. Connect the defogger actuator connector.

  5. Turn the ignition on.

  6. Check the voltage between terminals 5 and 6.

    Specification

    Door Position Voltage (V) Fault Detection
    Anti-Fog OFF (Close) 4,7 ± 0,15 Low voltage: 4.9 V or less
    Anti-Fog ON (Open) 0,90 ± 0,15 High voltage: 0.7 V or less

    The current actuator position will be sent to the control unit.

  7. If the measured voltage is not within specification, replace the auto defog actuator with a known good one and verify proper operation.

  8. Replace the auto defog actuator if it is determined to be the cause of the problem.

Replacement

  1. Disconnect the negative (-) battery terminal.

  2. Remove the glove box housing.

    (Refer to Body - "Glove Box Housing")

  3. Remove the passenger side air vent duct (A) after loosening the screw.

  4. Remove the aspirator.

  5. Disconnect the connector (A), then remove the auto defog actuator (B) after loosening the screws.

  6. Install in the reverse order of removal. Heating, Ventilation and Air Conditioning

Test yourself

A quick Kia Stinger CK quiz: every answer comes with an explanation and a link to the manual page.