Kia Soul: Heater & A/C Control Unit (FATC) Self Diagnosis - Controller - Heating,Ventilation And Air ConditioningKia Soul: Heater & A/C Control Unit (FATC) Self Diagnosis

Kia Soul 2014-2019 PS Service Manual / Heating,Ventilation And Air Conditioning / Controller / Heater & A/C Control Unit (FATC) Self Diagnosis

1.
Self-diagnosis process

2.
How to read self-diagnostic code
After the display panel flickers three times every 0.5 second, the corresponding fault code flickers on the setup temperature display panel every 0.5 second and will show two figures. Codes are displayed in numerical format
3.
Fault code display
(1)
Continuance operation : DTC code is one.

(2)
Continuance operation : DTC code is more two.

(3)
STEP operation
A.
Nomal or one fault code is same as a continuance operation.
B.
DTC code os more two.

4.
If fault codes are displayed during the check, Inspect malfunction causes 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
25
Intake door potentiometer open/short
26
Intake 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
71
ECV fault

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)

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