Kia Optima DL3 Quiz
Heating, Ventilation, and Air Conditioning

Temperature Control Actuator

In this manual: Heating, Ventilation, and Air Conditioning
General Information — 8Advanced Driver Assistance System (ADAS) — 21Maintenance — 27Engine Mechanical System — 45Engine Electrical System — 11Emission Control System — 11Engine Control System/Fuel System — 25Automatic Transmission — 20Drive Shaft and Axle — 7Suspension System — 22Steering — 7Restraints — 11Brake System — 22Body (Interior and Exterior) — 116Body Electrical System — 90Heating, Ventilation, and Air Conditioning — 32
17steps
~102min
4/5difficulty
Done 0 of 17

Components and Component Location

Component Location

1. Temperature Control Actuator [Driver Side] 2. Temperature Control Actuator [RH]

Description and Operation

Description

The temperature control actuator is located on the heater unit. It controls the temperature as follows.

The signal from the control unit adjusts the position of the temperature door using the temperature switch. The temperature is then controlled by the ratio of hot and cold air determined by the position of the temperature door.

Repair Procedures

Inspection

  1. Turn the ignition off.

  2. Disconnect the temperature control actuator connector.

  3. Check that the temperature control actuator moves to the cooling position when 12 V is applied to terminal 3 and terminal 7 is grounded.

    Check that the temperature control actuator operates in the warm position when the connections are reversed.

    [Driver Side Temperature Control Actuator]

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

    [Passenger Side Temperature Control Actuator]

    1. -
    2. -
    3. Class position
    4. Sensor ground    		 5. Feedback Signal
    6. Sensor Power (+5V)
    7. Warm Position

  4. Connect the temperature control actuator connector.

  5. Turn the ignition on.

  6. Check the voltage between terminals 5 and 6.

    Specification

    Door Position Voltage (V) Fault Detection
    Max. Cool 0,5 ± 0,15 Low voltage: 0.1 V or less
    High voltage: 4.9 V or more
    Max. Heat 4,5 ± 0,15

  7. If the measured voltage does not meet the specification, check operation by replacing the existing temperature control actuator with a new genuine part. Then determine whether the temperature control actuator needs to be replaced.

Replacement

[Driver]

  1. Disconnect the negative (-) battery terminal.

  2. Remove the airbag lower panel.

    (Refer to Body - "Under Cover Panel")

  3. Loosen the mounting screws and remove the air duct [LH] (A).

  4. Disconnect the connector (A), loosen the mounting screws, and remove the temperature control actuator (B).

  5. To install, reverse the removal procedure.

[Passenger]

  1. Disconnect the negative (-) battery terminal.

  2. Remove the air bag center panel.

    (Refer to Body - "Center Crash Pad Panel")

  3. Loosen the mounting screws and remove the air duct [RH] (A).

  4. Disconnect the connector (A), loosen the mounting screws, and remove the temperature control actuator (B).

  5. To install, reverse the removal procedure.

Test yourself

A quick Kia Optima DL3 quiz: every answer comes with an explanation and a link to the manual page.