SsangYong Stavic / SsangYong Rodius (2005 year). Manual — part 279
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
AIR CONDITIONING SYSTEM
STAVIC - 2004.09
13
3A
3. The Micro computer integrated in controller displays the defect codes in turns on the VFD after performing self
diagnosis. Below figure shows the defect code caused by disconnecting the interior temperature sensor/humidity
temperature sensor connector.
4. After displaying defect code, operates again in AUTO mode.
2. At this moment, the air conditioner controller performs the self diagnosis procedures.
Defect code ON
Defect code ON
[Note]
For sun sensor, the diagnosis for short circuit is only available. When the switch circuit is opened, the system recognize it
as a night.
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
AIR CONDITIONING SYSTEM
STAVIC - 2004.09
14
3A
- If the setting temperature starts to blink, the self diagnosis starts to check the conditions of defective sensor.
Phenomenon when Air Conditioner System is Defective
(Initial Automatic Diagnosis)
- If any sensor in the air conditioner system is defective, the temperature display blinks about 3 times during initial
operation of air conditioner controller.
Current setting
temperature blinks
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
AIR CONDITIONING SYSTEM
STAVIC - 2004.09
15
3A
6. SYSTEM DIAGRAM
Environ-
m e n t s
Air
condi-
tioner
control-
ler
U s e r
Control
Vehicle
informa-
tion
Setting
temperature
Ambient
temperature
Duct
temperature
Interior
temperature
Sun loads
AQS sensor
Vehicle
speed
Wiper
operation
Power
transistor
Blower high
speed relay
Air mix motor
Mode motor
Air source
selection motor
Engine ECM
Fan speed control
(Blower motor
control)
Temperature control
Air flow control
Air source selection
control
Compressor control
Air Conditioner Compressor Control by Engine ECU
In case of current vehicle models, the system turns ON/OFF the compressor switch according to refrigerant pressure,
ambient temperature and condenser temperature to protect air conditioner circuits. However, for the vehicle equipped
with DI engine, the engine ECU turns off air conditioner compressor as below in addition to above conditions.
1. Coolant temperature: below -20
°C
2. Coolant temperature: over 115
°C
3. For approx. 4 seconds after starting the engine
4. When engine speed is below 650 rpm
5. When engine speed is over 4,500 rpm
6. During abrupt acceleration for the vehicle equipped with manual transmission
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
AIR CONDITIONING SYSTEM
STAVIC - 2004.09
16
3A
7. CIRCUIT DIAGRAMS IN AIR CONDITIONER SYSTEM
FATC (Full Auto Temperature Control)
1) Condenser fan, air mix motor, sun load, coolant temperature sensor
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