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Kia Sedona: Heater & A/C Control Unit (DATC) Repair procedures - Controller - Heating,Ventilation And Air Conditioning - Kia Sedona YP Service ManualKia Sedona: Heater & A/C Control Unit (DATC) Repair procedures

Third generation YP (2014-2026) / Kia Sedona YP Service Manual / Heating,Ventilation And Air Conditioning / Controller / Heater & A/C Control Unit (DATC) Repair procedures

Self Diagnosis
1.
Self-diagnosis process

2.
How to read self-diagnostic code
After the display panel flickers three times at 0.5 second intervals, the corresponding fault code flickers on the setup temperature display panel at 0.5 second intervals and two digit figure will be displayed. Codes are indicated in numerical format.
3.
Fault code display
(1)
Continuance operation : One DTC code

(2)
Continuance operation : More than two DTC codes

(3)
STEP operation
A.
Normal or one fault code is the same as a continuance operation.
B.
More than two DTC codes.

4.
If fault codes are displayed during the check up, inspect possible causes of malfunction by referring to fault codes.
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 defog sensor open
24
Auto defog sensor short
25
Intake door potentiometer open/short
26
Intake door potentiometer fault
32
Temp door potentiometer fault - Passenger
33
Temp door potentiometer open/short - Passenger
36
Temp door potentiometer open/short - Rear
37
Temp door potentiometer fault- Rear
38
Mode door potentiometer open/short - Rear
43
Defog door potentiometer open/short
44
Defog door potentiometer fault
45
APT CAN signal fault
47
RPM CAN signal fault
48
Vehicle speed signal fault
49
Engine coolant temperature CAN signal fault
50
Cluster ionizer fault 
51
In-car sensor open - Rear
52
In-car sensor short - Rear
71
ECV fault
72
Climate CAN timeout

5.
Fail safe
NO.
Item
Fault
Fail Safe
1
In-car Sensor
Open or Short
Control with the value of 25°C(77.0°F)
2
Ambient temperature sensor
Open or Short
Control with the value of 20°C(67°F)
3
Evaporator temperature sensor
Open or Short
Control with the value of -2°C(28.4°F)
4
Water temperature sensor
Open or Short
Control with the value of -2°C(28.4°F)
5
Temperature control actuator
Open or Short
If temperature setting 17°C-24.5°C, fix at maximum cooling position.
If temperature setting 25°C-32°C, fix at maximum heating position.
6
Mode control actuator
Open or Short
Fix vent position, while selecting vent mode.
Fix defrost position, while selecting all except vent mode.
7
Intake control actuator
Open or Short
Fix fresh position, while selecting fresh mode.
Fix recirculation position, while selecting recirculation mode.
9
ECV
Open
CF_Fatc_EcvFlt = 01H (fault) ECV OFF, A/C Output OFF, Torque 0Nm
10
VS (Vehicle Speed)
FFh or NO reception
VS-TCU (From TCU2)
11
VS TCU (Vehicle Speed Calculated by TCU)
FFh or NO reception
Control with the value of  0 Kph
12
N (Engine Speed)
NO reception
Control with the value of 650 RPM
13
F_N_ENG
FFh or NO reception
Control with the value of 650 RPM
14
TPS (Throttle Position Signal)
FFh or NO reception
0%
15
Temp _ ENG
FFh or NO reception
Control with the value of - 2 °C(28.4°F)
16
R _ TqAcnApvC (Max Torque Limitation of A/C Compressor)
FFh or NO reception
0 Nm (ECV OFF)
17
R _ PAcnC (APT Sensor Output Value)
FFh or NO reception
0 hPa (ECV OFF)
18
RLY _ AC
NO reception
Comp OFF (ECV OFF)

Replacement
1.
Disconnect the negative (-) battery terminal.
2.
Remove the crash pad lower panel.
(Refer to Body - "Crash Pad Lower Panel")
3.
Remove the center fascia lower panel (A) after loosening the screw.

4.
Disconnect the heater & A/C controller connectors (A).

5.
Remove the heater & A/C controller (A) from center fascia lower panel (B) after loosening the screws.

6.
Install in the reverse order of removal.
   
•
Make sure that the connectors are connected properly.
•
Replace any damaged clips.
Heater & A/C Control Unit (DATC) Components and Components Location
Components (1) Control Panel (AUDIO Type) Connector Pin Function Connector Pin NoFunctionConnector Pin NoFunctionA1ILL+ (TAIL)A29CLEAN CIGNAL2SENSOR REF (+5V)30-3-31-4-32-5MODE ACT' ...

Heater & A/C Control Unit (Rear) Components and Components Location
Components (1) [Standard] Connector Pin Function Connector Pin NoFunctionA1BATT2ILL+ (TAIL)3MODE ACT''R F/B - REAR4MODE ACT''R (VENT) - REAR5MODE ACT''R (FLOOR) - REAR6TEMP ACT''R F/B - ...

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35R Clutch Control Solenoid Valve(35R/C_VFS) Description and Operation
Description • 35R clutch control solenoid valve is a Variable Force Solenoid (VFS) type. • When TCM supplies variable current to solenoid valve, hydraulic pressure of 35R clutc ...

Mode Control Actuator Description and Operation
Description Located in the heater unit, the mode control actuator adjusts the position of the mode door by operating the mode control actuator according to the signal from the A/C control unit. ...

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