Hyundai Creta: Heater / Temperature Control Actuator

Components and components location

Components Location

1. 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.

Repair procedures

Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the temperature control actuator connector.
3.
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.

1. -
2. -
3. Warm position
4. Sensor ground
5. Feedback signal
6. Sensor (+ 5V)
7. Cool position

4.
Connect the temperature control actuator connector.
5.
Turn the ignition switch ON.
6.
Check the voltage between terminal 5 and 6.
Specification
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

It will feedback the current position of the actuator to controls.
7.
If the measured voltage is not within specification, substitute with a known-good temperature control actuator and check for proper operation.
8.
Replace the temperature control actuator if it is proved that there is a problem with it.
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 Temperature Control Actuator can be checked.

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

Replacement
1.
Disconnect the negative (-) battery terminal.
2.
Remove the glove box housing.
(Refer to Body - "Glove Box Housing")
3.
Remove the passenger's side shower duct (A) after loosening the screw.

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

5.
Install in the reverse order of removal.
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