Kia Optima: Controller / Heater Control Unit

Kia Optima DL3 2019-2023 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).

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 ...

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