Kia Optima: Inspection - Temperature Control Actuator. Repair procedures - Temperature Control Actuator - Heating,Ventilation, Air Conditioning - Kia Optima TF 2011-2020 Service ManualKia Optima: Inspection

1. Ignition "OFF"
2. Disconnect the connector of temperature control actuator.
3. Verify that the temperature control actuator operates to the hot position when connecting 12V to the terminal 3 and grounding terminal 7.

Verify that the temperature control actuator operates to the cool position when connecting in the reverse.

[Drive]

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

4. Check the voltage between terminals 4 and 5 (Drive).

Specification

Door position
Voltage(4-5)
Error detecting
Max. cooling
0.3 ± 0.15V
Low voltage :0.1V or less
Max. heating
4.7 ± 0.15V
High voltage :4.9V or more

[Passenger]

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

5. Check the voltage between terminals 4 and 5 (Passenger).

Specification

Door position
Voltage(4-5)
Error detecting
Max. cooling
0.3 ± 0.15V
Low voltage :0.1V or less
Max. heating
4.7 ± 0.15V
High voltage :4.9V or more

It will feedback current position of actuator to controls.

6. If the measured voltage is not specification, substitute with a known-good temperature control actuator and check for proper operation.
7. If the problem is corrected, replace the temperature control actuator.

Temperature Control Actuator. Repair procedures
...

Replacement
1. Disconnect the negative (-) battery terminal. 2. Using the screwdriver, remove the side cover (A). 3. Loosen the mounting screws and th ...

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