Kia Carens: Controller / Heater & A/C Control Unit (DATC) Repair procedures

Kia Carens RP (2013-2018) Service Manual / Heating,Ventilation And Air Conditioning / Controller / Heater & A/C Control Unit (DATC) Repair procedures

Self Diagnosis

1.	Self-diagnosis process

How to read self-diagnostic code

After the display panel blinks three times every 0.5 second, the corresponding fault code blinks on the setup temperature display panel every 0.5 second and will show two figures. Codes are displayed in numerical format

Fault code

Display	Fail description
00	Normal
11	In-car sensor open
12	In-car sensor short
13	Ambient sensor open
14	Ambient sensor short
17	Evaporator sensor open
18	Evaporator sensor short
19	Temp door potentiometer open/short- Drive
20	Temp door potentiometer fault- Drive
21	Mode door potentiometer open/short
22	Mode door potentiometer fault
23	Auto defogging sensor open
24	Auto defogging sensor short
25	Intake door potentiometer open/short
26	Intake door potentiometer fault
32	Temp door potentiometer open/short - Passenger
33	Temp door potentiometer fault - Passenger
45	APT (A/C Pressure Transducer) CAN signal fault
47	RPM CAN signal fault
48	Vehicle speed CAN signal fault
49	Engine coolant temperature CAN signal fault
50	Cluster ion generator fault

Fault code display

(1)	Continuance operation : None or one DTC code.

(2)	Continuance operation : Two or more DTC code.

(3)

STEP operation

A.	Nomal or one fault code is same as a continuance operation.

B.	Two or more DTC code.

4.	If fault codes are displayed while checking, inspect for malfunction causes by referring to the fault code table.

Fail Safe

No	Sensor	Fail Condition	Fail Safe Function
1	In-car sensor	< 0.1V or > 4.9V	25°C (77°F)
2	Ambient temperature sensor	< 0.1V or > 4.9V	20°C (68°F)
3	Evaporator temperature sensor	< 0.1V or > 4.9V	-2°C (28.4°F)
4	Temperature control actuator feedback	< 0.1V or > 4.9V	Setting temperature is 24.5°C (76.1°F) or below : Max cool
4	Temperature control actuator feedback	< 0.1V or > 4.9V	Setting temperature is 25.0°C (77°F) or above : Max hot
5	Mode control actuator feedback	< 0.1V or > 4.9V	Vent: Vent
5	Mode control actuator feedback	< 0.1V or > 4.9V	Others: Defog
6	Intake actuator feedback	< 0.1V or > 4.9V	Recirculation: Recirculation
6	Intake actuator feedback	< 0.1V or > 4.9V	Others: Fresh
7	Auto defogging sensor (Relative humidity)	Open/Short	Relative humidity: 0%,
8	Engine coolant temperature	Communication fail	-2°C (28.4°F)
9	ECV feedback	Open	ECV output off

Replacement

1.	Disconnect the negative (-) battery terminal.

2.	Using a screwdriver or remover, remove the crash pad center garnish (A).

3.	Disconnect the start/stop button connector (A).

4.	After loosening the mounting screws, then remove the A/C & heater controller (A).

5.	Remove the in-car hose (A).

6.	Disconnect the A/C & heater controller connectors (B).

7.	Install in the reverse order of removal.

Heater & A/C Control Unit (DATC) Components and components location

Component Connector Pin Function Connector Pin No Function Connector Pin No Function ...

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