Hyundai Accent: Heater / Auto Defoging Actuator

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

- Components Location

1. Auto logging actuator

- 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. - Inspection

1.Turn the ignition switch OFF.

2.Disconnect the auto defogging connector.

3.Verify that the auto defogging actuator operates to the open position when connecting 12V to terminal 3 and grounding terminal 4. Verify that the auto defogging actuator operates to the close position when connected in reverse.

1. -
2. -
3. DEF (Open)
4. Sensor (+ 5V)
5. Feedback signal
6. Sensoer ground
7. DEF (Close)

4.Connect the auto defogging actuator connector.

5.Turn the ignition switch ON.

6.Check the voltage between terminals 6 and 5.

• It will feedback the current position of the actuator to controls.

Specification

Door position	Voltage (V)	Error detecting
Vent	4.7 ± 0.15	High voltage : 2.06V or more
Defrost	2.06 ± 0.15	Low voltage : 2.06V or less

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.

- 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 Auto Defogging Actuator can be checked.

4.To perform compulsory operation on Auto Defogging 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.Disconnect the connector (A) and then remove the auto defogging actuator (B) after loosening the mounting screws.

4.To install, reverse the removal procedure.

Mode Control Actuator

Blower

Other information:

Hyundai Accent (HC) (2017 - 2022) Service Manual: Cylinder Head

- Removal • Use Fender cover to avoid damaging painted surfaces. • To avoid damaging the cylinder head, wait until the engine coolant temperature drops below normal temperature before removing it. • When handling a metal gasket, take care not to fold the gasket or damage the contact surface of the gasket. • To avoid damage, unplug the wiring connectors carefully while holding the connector portion.

Hyundai Accent (HC) (2017 - 2022) Service Manual: TPMS Sensor

- Description 1.General descriptionWU is a sensor placed in the tire that reports pressure and temperature.The WU is mounted inside the wheels, fixed to the valve. The angle between the valve and the housing of the WU is variable.This allows adaptation to various types of rims.The Wheel Unit is made of a PCB supporting the electronic hardware and encapsulated inside a housing which is potted with polyurethane.

Hyundai Accent: Heater / Auto Defoging Actuator

Mode Control Actuator

Blower

Other information:

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