Kia Cee'd: Controller / Heater & A/C Control Unit (DATC) Repair procedures

Kia Cee'd JD Service Manual / Heating,Ventilation, 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 the 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 codes are displayed in numerical format.

Display	Fail description
0	Normal
11	In-car sensor open
12	In-car sensor short
13	Ambient temperature sensor open
14	Ambient temperature sensor short
17	Evaporator temperature sensor open
18	Evaporator temperature sensor short
19	Temperature door potentiometer open/short (Driver)
20	Temperature door potentiometer fault (Driver)
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	Temperature door potentiometer open/short (Passenger)
33	Temperature 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 ionizer fault
51	Dent sensor vent open
52	Dent sensor vent short
53	Dent sensor floor open
54	Dent sensor floor short

Fault code display

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

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

(3)

STEP operation

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

B.	There are two or more DTC code.

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

Fail safe

(1)	In-car temperature sensor : Control with the value of 25°C(77°F)

(2)	Ambient temperature sensor : Control with the value of 20°C(67°F)

(3)	Evaporator temperature sensor : Control with the value of -2°C(28.4°F)

(4)	Water temperature sensor : Control with the value of -2°C(28.4°F)

(5)	Temperature control actuator (Air mix potentiometer) : If temperature setting is 15°C~22.5°C(59°F~72.5°F), fix at maximum cooling position. If temperature setting is 23°C~30°C(73.4°F~86°C), fix at maximum heating position.

(6)	Mode control actuator (Direction potentiometer) : Fix vent position, while selecting vent mode. Fix defrost position, while selecting all except vent mode.

(7)	Intake control actuator : Fix fresh position, while selecting fresh mode. Fix recirculation position, while selecting recirculation mode.

(8)	Auto defog sensor : Control with the value of 0%.

Replacement

•	When prying with a flat-tip screwdriver, wrap it with protective tape, and apply protective tape around the related parts, to prevent damage.

•	Put on gloves to protect your hands.

1.	Disconnect the negative (-) battery terminal.

2.	Remove the gear boots (B) and gear knob (A).

3.	Using a screwdriver or remover, remove the console garnish (A). [LH] [RH]

4.	Using a screwdriver or remover, remove the console upper cover (A).

5.	Disconnect the indicator connector (A).

6.	Disconnect the EPB switch connector (A).

7.	After loosening the mounting screws, then remove the console tray (A).

8.	Disconnect the connectors (A).

9.	Remove the crash pad lower panel. (Refer to Body - "Crash Pad Lower Panel")

10.	Remove the glove box housing. (Refer to Body - "Glove Box Housing")

11.	After loosening the mounting screws, then remove the crash pad center lower panel (A).

12.	Disconnect the heater control unit connectors (A) and hose (B).

13.	Remove the heater A/C controller (A) from the lower center facia panel (B) after loosening the mounting screws.

14.

Install in the reverse of removal.

•	Make sure the connector are connected in properly.

•	Replace any damaged clips.

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