Hyundai Accent (HC): Heater / Mode Control Actuator

Hyundai Accent (HC) (2017 - 2022) Service Manual / Heating, Ventilation and Air Conditioning / Heater / Mode Control Actuator

- Components Location

1. Mode control actuator

- Description The 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. Pressing the mode select switch makes the mode control actuator shift in order of Vent → Bi-Level → Floor → Mix. - Specifications

Door position	Voltage (V)	Error detecting
Vent	0.3 ± 0.15	Low voltage : 0.1V or less
Defrost	4.7 ± 0.15	High voltage : 4.9V or more

- Inspection

1.Turn the ignition switch OFF.

2.Disconnect the mode control actuator connector.

3.Verify that the mode control actuator operates to the defrost mode when connecting 12V to terminal 6 and grounding terminal 5.Verify that the mode control actuator operates to the vent mode when connected in reverse.

Pin NO	Function
1	-
2	-
3	Defrost mode
4	Sensor ground
5	Feedback signal
6	Sensor (+5V)
7	Vent mode

4.Connect the mode control actuator connector.

5.Turn the ignition switch ON.

6.Check the voltage between terminal 6 and 5.

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

- Diagnosis With GDS

1.The heating, ventilation and air conditioning can be quickly diagnosed failed parts with vehicle diagnostic system (GDS).※ The diagnostic system (GDS) provides the following information.(1) Self diagnosis : Checking the failure code (DTC) and display.(2) Current data : Checking the system input / output data state.(3) Actuation test : Checking the system operation condition.(4) Additional function : Other controlling such as he system option and zero point adjustment.

2.Select the 'Car model' and the system to be checked in order to check the vehicle with the tester.

3.Select the 'Current data' menu to search the current state of the input / output data.The input / output data for the sensors corresponding to the Mode Control Actuator can be checked.

4.To perform compulsory operation on Mode Control Actuator input factors, select "ACTUATION TEST".

- Replacement

1.Disconnect the negative (-) battery terminal.

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

3.Remove the BCM (Body Control Module) cluster.(Refer to Body Electrical System - "BCM (Body Control Module)")

4.Disconnect the connector (A) and then remove the mode control actuator (B) after loosening the mounting screws.

5.To install, reverse the removal procedure.

Temperature Control Actuator

Auto Defoging Actuator

Other information:

Hyundai Accent (HC) (2017 - 2022) Service Manual: Timing Chain

- Removal 1.Disconnect the battery negative terminal. 2.Turn the crankshaft damper pulley clockwise, and align its groove with the timing mark of the timing chain cover. 3.Remove the timing chain cover.(Refer to Timing System - "Timing Chain Cover") 4.Remove the cam to cam guide (A). 5.Remove the timing chain tensioner (A) and remove the timing chain tensioner arm (B).

Hyundai Accent (HC) (2017 - 2022) Service Manual: Repair procedures

- Diagnosis with Diagnostic tool 1.In the body electrical system, failure can be quickly diagnosed by using the vehicle diagnostic system (Diagnostic tool).The diagnostic system (Diagnostic tool) provides the following information.(1)Fault Code Searching : Checking failure and code number (DTC) (2)Data Analysis : Checking the system input/output data state (3)Actuation test : Checking the system operation condition (4)S/W Management : Controlling other features including system option setting and zero point adjustment Data Analysis 1.

Hyundai Accent (HC): Heater / Mode Control Actuator

Temperature Control Actuator

Auto Defoging Actuator

Other information:

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