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Kia Forte: Heater & A/C Control Unit (DATC) Self Diagnosis - Controller - Heating,Ventilation, Air Conditioning - Kia Forte TD 2014-2018 Service ManualKia Forte: Heater & A/C Control Unit (DATC) Self Diagnosis

Second generation YD (2014-2018) / Kia Forte TD 2014-2018 Service Manual / Heating,Ventilation, Air Conditioning / Controller / Heater & A/C Control Unit (DATC) Self Diagnosis

1.
Self-diagnosis process
2.
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 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 defoggin sensor open
24
 Auto defoggin 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
43
 Defog door potentiometer open/short
44
 Defog door potentiometer fault
50
 Cluster ionizer fault
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

3.
Fault code display
(1)
Continuance operation : 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.
Two or more DTC code.

4.
If fault codes are displayed when checking, inspect for malfunction causes by referring to fault codes.
5.
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
 Auto defogging sensor (relative humidity)
 < 0.1V or > 4.9V
•
Relative humidity : 0%
5
 Temperature control actuator feedback - Driver
 < 0.1V or > 4.9V
•
Setting temperature is 24.5°C (76°F) or below: Max cool
•
Setting temperature is 25.0°C (77°F) or above: Max hot
6
 Mode control actuator feedback
< 0.1V or > 4.9V
•
Vent : Vent
•
Others : Defog
7
 Intake actuator feedback
 < 0.1V or > 4.9V
•
Recirculation : Recirculation
•
Others : Fresh
8
 Auto defogging actuator feedback
 < 0.1V or > 4.9V
•
Close : Close
•
Others : Open
9
 ECV feedback
 No input of ECV
feedback signal
•
ECV fault signal : 1
•
PWM control output : 0%
•
Torgue : 0

Heater & A/C Control Unit (DATC) Component
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Heater & A/C Control Unit (DATC) Replacement
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See also:

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Auto Defogging Sensor Description
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Components
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