Kia Niro: Heater / Temperature Control Actuator Repair procedures

Kia Niro 2017 (DE HEV) Service Manual / Heating, Ventilation and Air Conditioning / Heater / Temperature Control Actuator Repair procedures

Inspection

1.	Switch "OFF" the ignition.

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.

Temperature control actuator [LH]

1. -
2. -
3. Cool position
4. Sensor (+ 5V)

5. Feedback signal
6. Sensor ground
7. Warm position

Temperature control actuator [RH]

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.	Switch "ON" the ignition.

Check the voltage between terminals 5 and 6.

Specification

Door Position	Voltage (V)	Error Detectio
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

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.

Replacement

[Driver side]

1.	Disconnect the negative (-) battery terminal.

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

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

4.	Disconnect the duct sensor connector (A).

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

6.	Install in the reverse order of removal.

[Passenger side]

1.	Disconnect the negative (-) battery terminal.

2.	Remove the glove box housing. (Refer to Body - "Glove Box Housing")

3.	Remove the passenger side shower duct (A) after loosening the screw.

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

5.	Install in the reverse order of removal.

Temperature Control Actuator Description and operation

Description Located in the heater unit, the temperature control actuator regulates the temperature in the following procedure. The signal from the control unit adjusts the position of ...

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