Hyundai Kona Quiz
Heating, Ventilation, and Air Conditioning

Auto Defog Actuator Repair Procedures

In this manual: Heating, Ventilation, and Air Conditioning
General Information — 17Engine Mechanical System — 85Engine Electrical System — 50Emission Control System — 26Engine Control System/Fuel System — 152DCT (Dual Clutch Transmission) System — 50Four-Wheel Drive (4WD) System — 21Propeller Shaft and Axle (2WD-FF) — 28Suspension System (without ECS) — 32Steering — 21Restraints — 38Brake System — 64Body (Interior and Exterior) — 205Body Electrical System — 1Heating, Ventilation, and Air Conditioning — 66
15steps
~90min
4/5difficulty
Done 0 of 15

Inspection

  1. Turn the ignition off.
  2. Disconnect the auto defog actuator connector.
  3. Make sure the auto defog actuator operates in the open position when 12 V is applied to terminal 3 and ground terminal 4. Make sure the auto defog actuator operates in the closed position when the connection is reversed.
    1. -
    2. -
    3. DEF (Open)
    4. DEF (Close)    		 5. Sensor Ground
    6. Feedback Signal
    7. Sensor (+5V)
  4. Connect the defogger actuator connector.
  5. Turn the ignition on.
  6. Check the voltage between terminals 6 and 5.Specification
    Door Position Voltage (V) Fault Detection
    vent 0,5 ± 0,15 Low voltage: 0.1 V or less
    Defrost 4,5 ± 0,15 High Voltage: 3.8 V or more
  7. If the measured voltage does not meet the specification, check operation by replacing the existing auto defog actuator with a new genuine part. Then determine whether replacement of the auto defog actuator is required or not.

Diagnosis Using GDS

  1. The heating, ventilation, and air conditioning system faults can be quickly diagnosed using the Global Diagnostic System (GDS). ※ The GDS provides the following information: (1) Self-diagnosis: Check and display of diagnostic trouble codes (DTC). (2) Current data: Check the input/output status of system data. (3) Active test: Check the operating status of the system. (4) Additional functions: Other controls such as system option and zero point adjustment.
  2. Select "Vehicle Model" and the system to be checked to inspect the vehicle with the tester.
  3. Select the "Current Data" menu to check the current input/output data status. The input/output data for the sensors corresponding to the Auto Defog Actuator can be checked.
  4. To perform a forced operation on the auto defog actuator input factors, select "ACTUATOR TEST".

Replacement

  1. Disconnect the negative (-) battery terminal.
  2. Remove the driver airbag module assembly. (Refer to Body - "Driver Airbag Module Assembly")
  3. Disconnect the connector (A) and remove the auto defog actuator (B) after loosening the mounting screws.
  4. To install, reverse the removal procedure.

Test yourself

A quick Hyundai Kona quiz: every answer comes with an explanation and a link to the manual page.