Hyundai Elantra (CN7): Heater / Auto Defoging Actuator

Hyundai Elantra (CN7) 2021-2026 Service Manual / Heating, Ventilation and Air Conditioning / Heater / Auto Defoging Actuator

Description and operation

Description

The auto defogging sensor is installed on front window glass. The sensor judges and sends signal if moisture occurs to blow out wind for defogging. The air conditioner control module receives a signal from the sensor and restrains moisture and eliminates defog by the intake actuator, A/C, auto defogging actuator, blower motor rpm and mode actuator.

Components and components location

Components Location

1. Auto defoging actuator

Specifications

Door position	Voltage (V)	Error detecting
Max. cooling	0.3 ± 0.15	Low voltage : 0.1V or less
Max. heating	4.7 ± 0.15	High voltage : 4.9V or more

Repair procedures

Inspection

1.	Turn the ignition switch OFF.

2.	Disconnect the auto defogging connector.

Verify that the auto defogging actuator operates to the open position when connecting 12V to terminal 3 and grounding terminal 7.

Verify that the auto defogging actuator operates to the close position when connected in reverse.

Pin No	Function
1	-
2	-
3	Open
4	Sensor (+5V)
5	Feedback signal
6	Sensor ground
7	Off

4.	Connect the auto defogging actuator connector.

5.	Turn the ignition switch ON.

6.	Check the voltage between terminals 6 and 5.

7.	If the measured voltage is not within specification, check the operation by replacing the existing auto defogging actuator with a new genuine part. After that, determine whether replacement of the auto defogging actuator is required or not.

Replacement

1.	Disconnect the negative (-) battery terminal.

2.	Remove the main crash pad assembly. (Refer to Body (Interior and Exterior) - "Main Crash Pad Assembly")

3.	Disconnect the connector (A) and then remove the auto defoging actuator (B) after loosening the mounting screws.

4.	To install, reverse the removal procedure.

❮Mode Control Actuator

Description and operation DescriptionThe mode control actuator is located at the heater unit.It adjusts the position of the mode door by operating the mode control actuator based on the signal of the A/C control unit.

Blower❯

Other information:

Hyundai Elantra (CN7) 2021-2026 Service Manual: Climate Control Air Filter

Description and operation Description The climate control air filter is located in the blower unit. It eliminates foreign materials and odor. The particle filter performs a role as an odor filter as well as a conventional dust filter to ensure comfortable interior environment.

Hyundai Elantra (CN7) 2021-2026 Service Manual: Repair procedures

Variant Coding When you need variant coding:– Replace Front View Camera with a new one※ EOL Variant Coding and calibration required for new replacementFront View Camera Variant CodingFront view camera variant coding makes it possible to operate functions for each vehicle type.