Hyundai Elantra (CN7): Heater / Temperature Control Actuator

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

Description and operation

Description

The temperature control actuator is located at the heater unit. It regulates the temperature by the procedure as follows.

The signal from the control unit adjusts the position of the temperature door by operating the temperature switch. Then the temperature will be regulated by the hot/cold air ratio decided by the position of the temperature door.

Components and components location

Components Location

1. Temperature control actuator [LH]

2.Temperature control actuator [RH]

Specifications

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

Repair procedures

Inspection

1.	Turn the ignition switch OFF.

2.	Disconnect the temperature control actuator connector.

Verify that the temperature control actuator operates to the cool position when connecting 12V to terminal 3 and grounding terminal 7.

Verify that the temperature control actuator operates to the warm position when connected in reverse.

Pin NO	Function
1	-
2	-
3	Cool position
4	Sensor (+5V)
5	Feedback signal
6	Sensor ground
7	Warm position

4.	Connect the temperature control actuator connector.

5.	Turn the ignition switch ON.

6.	Check the voltage between terminal 5 and 6.

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

Replacement

[Driver's side]

1.	Disconnect the negative (-) battery terminal.

2.	Remove the crash pad lower panel. (Refer to Body (Interior and Exterior) - "Crash Pad Lower Panel")

3.	Loosen the mounting screw, remove the shower duct (A).

4.	Disconnect the connector (A) and then remove the driver's side temperature control actuator (B) after loosening the mounting screws.

5.	To install, reverse the removal procedure.

[Passenger's side]

1.	Disconnect the negative (-) battery terminal.

2.	Remove the glove box housing cover. (Refer to Body (Interior and Exterior) - "Glove Box Housing Cover")

3.	Loosen the mounting screw, remove the shower duct (A).

4.	Disconnect the connector (A) and then remove the passenger's side temperature control actuator (B) after loosening the mounting screws.

5.	To install, reverse the removal procedure.

❮Evaporator Core

Repair procedures Replacement1.Disconnect the negative (-) battery terminal. 2.Remove the heater and blower assembly.(Refer to Heater - "Heater Unit") 3.

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.

Other information:

Hyundai Elantra (CN7) 2021-2026 Service Manual: Compressor oil

Repair procedures Oil Specification1.The HFC-134a system requires synthetic (PAG) compressor oil whereas the R-12 system requires mineral compressor oil. The two oils must never be mixed.2.Compressor (PAG) oil varies according to compressor model. Be sure to use oil specified for the model of compressor.

Hyundai Elantra (CN7) 2021-2026 Service Manual: ADAS Parking ECU (ADAS_PRK)

Components and components location Components and Components Location Repair procedures Removal • Use a plastic panel removal tool to remove interior trim pieces without marring the surface.• Take care not to bend or scratch the trim and panels.