Hyundai Accent (HC): Heater / Mode Control Actuator
1. Mode control actuator
| 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 |
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.
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".
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.
Other information:
Hyundai Accent (HC) (2017 - 2022) Service Manual: Specifications
- Specifications DescriptionSpecificationsLimit General TypeIn-line, DOHC Number of cylinders4 Bore75.60 mm (2.9764 in) Stroke89.0 mm (3.5039 in.) Total displacement1,598 cc (97.52 cu.in) Compression ratio11.2 ± 0.2 : 1 Firing order1-3-4-2 Valve timing Intake valveOpensBTDC 42° - ATDC 38° ClosesABDC 7° - ABDC 87° Exhaust valveOpensBBDC 43° - ABDC 2° ClosesATDC 0° - ATDC 45° Cylinder head Flatness of gasket surfaceLess than 0.Hyundai Accent (HC) (2017 - 2022) Service Manual: General Safety Information and Caution
- Precautions General Precautions Please read the following precautions carefully before performing the airbag system service. Observe the instructions described in this manual, or the airbags could accidentally deploy and cause damage or injuries. • Except when performing electrical inspections, always turn the ignition switch OFF and disconnect the negative cable from the battery, and wait at least three minutes before beginning work.
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