Kia Rio Manuals

Kia Rio: Heater & A/C Control Unit (FATC) Self Diagnosis - Controller - Heating,Ventilation, Air Conditioning - Kia Rio UB 2012-2024 Service ManualKia Rio: Heater & A/C Control Unit (FATC) Self Diagnosis

1.
Self-diagnosis process
2.
How to read self-diagnostic code
During the self-diagnosis, the corresponding fault code flickers on the setup temperature display panel every 0.5 second and will show two figures.
Fault codes are displayed in numerical format.
Display
 Fail description
00
 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
20
 Temperature door potentiometer fault
21
 Mode door potentiometer open/short
22
 Mode door potentiometer fault
25
 Intake door potentiometer open/short
26
 Intake door potentiometer fault
43
 Foot door potentiometer open/short
44
 Foot door potentiometer 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
50
 Cluster ionizer fault
51
 Auto defogging sensor communication and sensor input fault

3.
Fault code display
(1)
Continuance operation: DTC code is none or one.
(2)
Continuance operation: DTC code is two or more.
(3)
STEP operation
A.
Normal or one fault code is same as a continuance operation.
B.
DTC code is two or more.


4.
If fault codes are displayed during the check, inspect malfunction causes by referring to fault codes table.
5.
Fail safe
No
 Sensor
 Fail condition
 Fail safe function
1
 In-car sensor
 < 0.1V or > 4.9V
 23°C (73.4°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
 Temperature control actuator feedback
 < 0.1V or > 4.9V
•
Setting temperature is 24.5°C (76.1°F) or below: Max cool
•
Setting temperature is 25.0°C (77°F) or above: Max hot
5
 Mode control actuator feedback
 < 0.5V or > 4.5V
•
Vent: Vent
•
Others: Defog
6
 Intake actuator feedback
 < 0.1V or > 4.9V
•
Recirculation: Recirculation
•
Others: Fresh
7
 Foot actuator feedback
 < 0.5V or > 4.5V
•
Vent: Open
•
Others: Close
8
 Auto defogging sensor
(Relative humidity)
 Communication fail
•
Relative humidity: 60%,
•
Surrounding temperature : 23°C (73.4°F)
9
 Auto defogging sensor
(Glass temperature)
 < 0.1V or > 4.9V
 Glass temperature : 23°C(73.4°F)
10
 Engine coolant temperature
 Communication fail
 85°C (185°F)
11
 ECV feedback
 No input of ECV
feedback signal
•
ECV fault signal : 1
•
PWM control output : maintain
•
Torgue : 0

Heater & A/C Control Unit (FATC) Schematic Diagrams
...

Heater & A/C Control Unit (FATC) Replacement
1. Disconnect the negative (-) battery terminal. 2. Remove the heater & A/C controller (A) from the center facia using a flat-head scre ...

See also:

Front Stabilizer Bar Replacement
1. Remove the front wheel & tire. Tightening torque : 88.3 ~ 107.9N.m(9.0 ~ 11.0kgf.m, 65.1 ~ 79.6lb-ft) ...

Rheostat Replacement
1. Disconnect the negative (-) battery terminal. 2. Remove the crash pad side switch assembly (A). 3. ...

Removal
1. Remove the fuel pump. (Refer to Engine Control/Fuel System - “Fuel Pump”) 2. Remove the ORVR valve (A) after releasing hooks (B). ...

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