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