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
...

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