Kia Optima: Controller / Heater & A/C Control Unit (DATC)

Kia Optima DL3 2019-2025 Service and Repair Manual / Heating, Ventilation and Air Conditioning / Controller / Heater & A/C Control Unit (DATC)

Components and components location

Components

Connector

Pin NO	Funtion	Pin NO	Funtion
1	Ground	9	Ground
2	ILL-	10	-
3	-	11	-
4	-	12	-
5	HTD	13	LIN BUS
6	-	14	ISG B+
7	ILL+	15	IGN2
8	IGN1	16	Battery (+)

Repair procedures

Self Diagnosis

Self-diagnosis process.

•	When operating the self-diagnostics, the below fault(self-diagnostics code) will blink at 0.5 seconds interval on the temperature display settings(driver's side only) and the remaining symbols are OFF .

Fault code display

(1)	Continuance operation : DTC code.

(2)	Continuance operation : DTC code.

(3)	STEP operation. A. Nomal or one fault code is same as a continuance operation. B. DTC code.

Replacement

1.	Disconnect the negative (-) battery terminal.

2.	Using a screwdriver or remover, remove the floor console upper garnish (A).

3.	Loosen the mounting screws and remove the A/C & heater controller unit (A).

4.	Disconnect the A/C & heater control connector (A).

To install, reverse the removal procedure.

•	Make sure the connector are connected in properly.

•	Replace any damaged clips (or pin-type retainers).

Heater & A/C Control Unit (Manual)

Components and components location Components Connector Pin Function [Connector A] Pin NO Funtion Pin NO Funtion ...

Heater Control Unit

Components and components location Components Connector Pin Function [Connector A] Pin NO Funtion Pin NO Funtion ...

Other information:

Kia Optima DL3 2019-2025 Owner's Manual:

CAUTION When replacing tires, use the same size originally supplied with the vehicle. Using tires of a different size can damage the related parts or make them work irregularly. ✽ NOTICE It is permissible to add 21 kPa (3 psi) to the standard tire pressure specification if colder temper ...

Kia Optima DL3 2019-2025 Owner's Manual: Climate control air filter

The climate control air filter installed behind the glove box filters the dust or other pollutants that come into the vehicle from the outside through the heating and air conditioning system. If dust or other pollutants accumulate in the filter over a period of time, the air flow from the ai ...