2013 SSANGYONG KORANDO actuator

2) Interior Layout
Sun load sensor
It is mounted to the upper left-
hand of the instrument panel and
detects the sun-load enters to the
interior through the windshield
with a photo diode. Incar sensor
It is mounted to the rear of the
heater and A/C control panel
(with FATC) and detects the
interior air temperature drawn
through the senor inlet.Air conditioner module
It is mounted to inside of the
instrument panel and has the
evaporator core, heater core,
PTC heater and corresponding
actuator and different sensors.
Heater & A/C control assembly
With FATC With MTC
It falls in to two categories; FATC (Full Automatic Temperature Control) and MTC (Manual Temperature
Control), which controls the air conditioning system's operation.

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Intake sensor
It is mounted to the side of
evaporator core and detects the
temperature of the evaporator
core.Water temperature
sensor
It is mounted to the heater pipe
part and detects the coolant
temperature.
3) Air Conditioner Module Layout
Temp actuator
It changes the air mix door
opening according to the
control command from the
heater and A/C control
assembly.Evaporator core
It cools the surrounding air by
passing through the low-
temperature and low-pressure
refrigerant sprayed from the
expansion valve.
Heater core
It is mounted to the left-hand of
the air conditioner module and
heats the indoor using the heat
of the engine coolant.
Mode actuator
It controls the air outlet damper
to the five directions according
to the control command from
the heater and A/C control
assembly.

Blower motor
It is mounted to the bottom of
the blower box and sends the
air inside of the vehicle. PTC heater
It is mounted to the heater air
outlet in the heater module
and warms the air from the
heater to the air vent.
Intake actuator
It changes the air source selection
mode according to the control
command from the heater and A/C
control assembly.A/C filter
It is mounted to the top of the
blower motor and filters the air
before it is discharged through
the duct.
MOS module
It controls the rotation speed of
the blower motor by receiving the
fan speed control signal from the
heater and A/C control assembly.

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3. FATC SYSTEM OPERATION PROCESS
1) Input/Output Factors
FATC (Full Automatic Temperature Control) is a temperature control device which receives signals from
various sensors (interior temperature sensor, ambient temperature sensor, water temperature sensor,
sun-load sensor) and control switches to control the blower motor and all kinds of actuator (mode door
actuator, mix door actuator, air source door actuator) through MICOM in the FATC, therefore, the interior
temperature of the vehicle is kept to the temperature which is set by a driver. The driver can check the
status of A/C through the LCD display of the A/C control assembly. The fan speed and the temperature
are adjusted automatically by the input values from different sensors to keep indoor air fresh. If the FATC
system has any defect, the self-diagnosis is used for the system to make it easier to detect the fault.

(2) Temperature control
The blowing air temperature is controlled by the temp actuator and the set temperature can be checked
via the LCD display.
Manual control
The discharge air temperature is controlled by the temperature control dial. The driver can select one
of the 31 levels.
Auto control
When pressing the AUTO switch, "AUTO" is shown on the display and the fan speed and air distribution
mode are adjusted automatically to keep interior temperature to the set temperature. In full AUTO mode,
the FATC receives various signals such as the indoor temperature, ambient temperature, engine coolant
temperature, sunlight, from different sensors to control the A/C compressor, mode actuator, intake
actuator, temp actuator, blower motors, etc. to keep indoor environments fresh.
Max. cooling/heating control (AUTO mode)
If the temperature is set to the lowest level (Lo) or highest level (Hi), the system will go into the maximum
cooling or maximum heating mode regardless of the sensor signals.
Set
temp.A/C
compressorAir outlet
(mode)Air inletBlower
voltageTemp actuator
LO ON Vent Recirculation 10.5 V Max. cooling position
HI OFF Footwell Fresh air 10.5 V Max. heating position
Temperature control dial
LCD display (temperature view)

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(4) Air source control
The air source selection is made by the intake actuator. The driver can see the air source mode through
the switch's indicator and the LCD display.
Manual control
Press the air source selection switch to control the air source selection door manually. The air source
mode is switched
between the fresh air and recirculation alternatively each time the switch is pressed.
Auto control
In auto mode, the basic setting for the air source is fresh air. When the ambient temperature is high
during cooling,
the air source is changed from fresh air to recirculation to lower the temperature.
Control by vehicle speed (heating)
The air source selection is controlled in accordance with the vehicle speed while driving. Operating
conditions and control process are as follows:
AUTO mode
When the vehicle speed is 45 km/h or lower in fresh air mode, the air source door is open 30% of its
maximum opening. If the vehicle speed is 65 km/h or more, then
the air source door is completely open. -
-
and the electric fan 7.5V or higher.
Air source selection switch
LCD display (air source mode view)

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(5) Air distribution control
The air distribution is changed by the mode actuator and the LCD display and the indicator of the
defroster switch shows which air distribution modes is selected.
Manual control
The driver can select one of 5 air distribution mode using the air distribution switch and defroster switch.
Defroster switch: When this switch is pressed, the defroster mode (A/C ON, fresh air mode, fan
speed of 1 level or above) is activated. Pressing the switch again returns the unit to the previous
status.
Air distribution switch: The mode is switched in the following order each time the switch is pressed:
-
-
Air distribution switch (switches in order)
Defroster switch
LCD display (air distribution mode)
Air distribution switch
When the defroster switch is pressed with the fan speed 0, the fan speed will be set to level 2
automatically.

(7) Self-diagnosis
Diagnostic trouble code
The FATC has a self-diagnosis function that can diagnose the system by itself. If this system is
defective, the LCD display shows the diagnostic trouble code (DTC) to inform a driver of defects on the
device such as a sensor or actuator. The driver can see the each sensor data on the air conditioning
system after entering self-diagnosis mode. Before checking each component, be sure to check the
default code by using self diagnosis function.
The diagnostic trouble code (DTC)
flashes twice and is displayed
repeatedly in order as long as a
separate operation is not performed.
Code Defective part
00 Normal
21 Ambient temperature sensor
22 Incar sensor
23 Water temperature sensor
24 Intake sensor
26 Temp door (control)
31 Mode door (vent)
32 Mode door (bi-level)
33 Temp door (cool)
34 Mode door (foot)
35 Mode door (defroster & foot)
36 Mode door (defroster)
37 Intake door (fresh air)
38 Intake door (1/3)
39 Intake door (recirculation)Diagnostic trouble code
Open circuit in sensor
Diagnostic trouble code