Kia Optima: Controller / Heater Control Unit

Kia Optima DL3 2019-2024 Service and Repair Manual / Heating, Ventilation and Air Conditioning / Controller / Heater Control Unit

Components and components location
Components

Connector Pin Function

[Connector A]

Pin NO
Funtion
Pin NO
Funtion
1
Ground
11
Ground
2
Clean signal
12
-
3
Humidity
13
-
4
Diagnosis (Ionizer)
14
Driver Temperature Control Actuator Feedback
5
Ambient Temperature Sensor (+)
15
Passenger Temperature Control Actuator Feedback
6
Evaporator Temperature Sensor (+)
16
Intake Actuator Feedback
7
Right Photo Sensor (-)
17
Mode Control Actuator Feedback
8
Left Photo Sensor (-)
18
Auto Defogging Actuator Feedback
9
CAN Low
19
-
10
CAN High
20
-

[Connector B]

Pin NO
Funtion
Pin NO
Funtion
1
Passenger Temperature Control Actuator (WARM)
11
-
2
Passenger Temperature Control Actuator (COOL)
12
-
3
Auto Defogging Actuator (CLOSE)
13
-
4
Auto Defogging Actuator (OPEN)
14
-
5
Driver Temperature Control Actuator (COOL)
15
-
6
Driver Temperature Control Actuator (WARM)
16
-
7
Intake Actuator (REC)
17
-
8
Intake Actuator (FRE)
18
Blower Motor (+)
9
Mode Control Actuator (DEF)
19
FET Drain Feedback
10
Mode Control Actuator (VENT)
20
FET (GATE)

[Connector C]

Pin NO
Funtion
Pin NO
Funtion
1
Battery (+)
9
IGN1
2
IGN2
10
-
3
LIN BUS
11
-
4
Sensor REF (+5V)
12
-
5
-
13
-
6
ECV (+)
14
-
7
ECV (-) Ground
15
-
8
Ground
16
Sensor Ground

Repair procedures
Replacement
1.

Disconnect the negative (-) battery terminal.

2.

Remove the glove box.

(Refer to Body - "Glove Box")

3.

Remove the crash pad under cover (A).

4.

Disconnect the heater controller unit connectors (A).

5.

After loosening the mounting screw, remove the heater controller unit (A).

6.

To install, reverse the removal procedure.

  

Make sure the connector are connected in properly.

Heater & A/C Control Unit (DATC)
Components and components location Components Connector Pin NO Funtion Pin NO Funtion 1 Ground ...

Other information:

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