Kia Sorento: Heater & A/C Control Unit (DATC) Self Diagnosis

Second Generation XM (2011-2024) / Kia Sorento XM 2011-2024 Service Manual / Heating,Ventilation And Air Conditioning / Controller / Heater & A/C Control Unit (DATC) 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 temperature sensor short (Low)
12	In-car temperature sensor open (High)
13	Ambient temperature sensor short (Low)
14	Ambient temperature sensor open (High)
17	Evaporator sensor short (Low)
18	Evaporator sensor open (High)
19	Air mix potentiometer open (Low) - Driver
19	Air mix potentiometer short (High) - Driver
21	Direction potentiometer open (Low) - Driver
21	Direction potentiometer short (High) - Driver
20	Air mix motor - Driver
22	Direction control motor - Driver
25	Intake potentiometer open (Low)
25	Intake potentiometer short (High)
26	Intake motor
32	Air mix potentiometer open (Low) - Passanger
32	Air mix potentiometer short (High) - Passanger
33	Air mix motor - Passanger
44	Cluster Ionizer fault
31	Auto defogging sensor signal and Glass sensor input fault
40	DEF Direction potentiometer open (Low)
40	DEF Direction potentiometer short (High)
41	DEF Direction control motor
46	APT sensor Fault (CAN signal)
47	Engine RPM Fault (CAN signal)
48	Vehicle Speed Sensor Fault (CAN Signal)
49	Engine Coolant Temp Sensor Fault (CAN Signal)

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

Sensor

Fail condition

Fail safe function

In-car sensor

< 0.1V or > 4.9V

23°C (73.4°F)

Ambient temperature sensor

< 0.1V or > 4.9V

20°C (68°F)

Evaporator temperature sensor

< 0.1V or > 4.9V

-2°C (28.4°F)

Temperature control actuator feedback - Driver

< 0.1V or > 4.9V

•	Setting temperature is 24.5°C (76.1°F) or below

•	Setting temperature is 25.0°C (77°F) or above: Max hot

Mode control actuator feedback - Driver

< 0.1V or > 4.9V

•	Vent: Vent

•	Others: Defog

Intake actuator feedback

< 0.1V or > 4.9V

•	Recirculation: Recirculation

•	Others: Fresh

Temperature control actuator feedback - Passenger

< 0.1V or > 4.9V

•	Setting temperature is 24.5°C (76.1°F) or below

•	Setting temperature is 25.0°C (77°F) or above: Max hot

Auto defogging sensor (Relative humidity)

Communication fail

•	Relative humidity: 60%,

•	Surrounding temperature : 23°C (73.4°F)

Auto defogging actuator feedback

< 0.1V or > 4.9V

•	Close: Close

•	Others: Open

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