SsangYong Stavic / SsangYong Rodius (2005 year). Manual - part 281

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

AIR CONDITIONING SYSTEM

STAVIC - 2004.09

23

3A

Inspection

If the active incar sensor defect code (DTC 1) and the humidity sensor defect code (DTC 10) are set, check as below:

[Active incar sensor]

1. Remove the integrated AIH sensor and measure the

resistance between terminal No. 5 and 6 on the
sensor connector.

(standard: approx. 25

°C, 2.2 k

Ω

)

2. If the measured value is out of the specified range,

replace the AIH sensor. If the measured values are
within the specified range, check as below.

3. Turn the ignition switch to ON position and measure

the voltage to active incar sensor from the FATC
controller connector.

(standard: approx. 2 V at 25

°C)

4. If the voltage value cannot be measured, check the

circuit for open. If the measured value is within the
specified range, replace the FATC controller.

Air conditioner controller

Air conditioner controller connector

(based on wiring)

AIH sensor (based on sensor)

[Humidity sensor]

1. Apply 5 V to terminal No. 1 and 3 on the humidity

sensor connector.

2. Connect the positive (+) probe of a tester on No. 2

terminal and the negative (-) probe on No. 3 terminal,
and measure the output voltage while the voltage is
applied.

(output voltage: approx. 0.8 ~ 3.4 V)

3. Check whether the output voltage is changed when

blowing into the inlet of the sensor. If there is a voltage
change, the sensor is in normal condition. However,
if the voltage is not changed, replace the humidity
sensor.

4. In addition, if the output voltage is extremely high or

low even in the specified range, replace the humidity
sensor.

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

AIR CONDITIONING SYSTEM

STAVIC - 2004.09

24

3A

9. AIR QUALITY SYSTEM (AQS)

1) Components of AQS

Air Quality System (AQS) changes the air source selection to recirculation mode when polluted air is detected through
AQS sensor. The air source selection returns back to fresh air intake mode after a specified period or the polluted air is
disappeared.

AUTO Mode

The air source is not changed when pressing the AQS and air source
selection switch in “AUTO” mode. However, the indicator on the
switch turned ON/OFF. In other words, the air source cannot be
changed to recirculation mode in AUTO mode by just pressing the
switch.

To change the air source to recirculation mode in AUTO mode, get
into Manual mode first, then press the air source selection switch.

Manual Mode

To change the AQS mode to Manual mode from AUTO mode, use
the MODE switch or the fan speed control dial. In Manual mode, the
“AUTO” symbol on the display is disappeared. When pressing the
AQS and air source selection switch, the mode is changed in order
of AQS LED ON, AQS LED OFF (fresh air), and air source LED ON
(recirculation).

The figure shows that the mode has been changed to the recircula-
tion mode from fresh air mode under AQS mode (AQS LED ON)
after detecting the polluted outside air.

AQS and air source selection switch

The AQS switch is integrated with the air source selection switch.

AQS sensor and ambient tempera-

ture sensor

AQS sensor

Ambient temperature sensor

Connector

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AIR CONDITIONING SYSTEM

STAVIC - 2004.09

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3A

2) AQS Operation

The AQS operates under air conditioner AUTO mode or when the AQS switch is pressed under manual mode. It requires
preheating time (for seconds) for operation and the module and sensor are integrated.

(However, it operates only when the DEF (defroster) switch on the air conditioner switch panel is not pressed in.)

1. Self diagnosis and preheating process during initial operation of A/C controller (AUTO mode)

2. AQS operation (AQS switch is pressed in): detecting the polluted outside air

3. When driving out of polluted area

1. When the air conditioner controller is operated in AUTO

mode during its initial operation, the air source is changed
to the recirculation mode and AQS LED comes on.

(This is the self diagnosis and preheating process for
AQS.)

2. After completing the above process, the AQS LED is

turned off and the air source is automatically changed to
the fresh air mode.

1. When pressing the AQS switch, the LED on the AQS

switch is turned on and the AQS function is activated.

2. When the polluted outside air is detected, the AQS

operates and converts the air source to recirculation mode
automatically. At this moment, the recirculation mode
indicator comes on in the display.

1. If the polluted air is disappeared, the air source is

automatically changed to the fresh air mode and AQS
LED stays on.

2. The air source is not changed when pressing the AQS

and air source selection switch in “AUTO” mode. To
change the air source to recirculation mode in AUTO
mode, get into Manual mode first, then press the air
source selection switch.

 [Note]

If the AQS switch is pressed in, the AQS function works
regardless of air conditioner controller operation.

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

AIR CONDITIONING SYSTEM

STAVIC - 2004.09

26

3A

[AQS sensor]

1. Measure the voltage value of AQS.

(between connector terminal No. 3 and 4.)

2. If the measured voltage is out of 0.1 to 4.8 V, replace

the AQS.

3. If the measured voltage is out of the specified range,

replace the AQS. If it is within the specified range,
check as below.

4. Turn the ignition key to “ON” position.

5. Measure the voltage between terminal B9 and B15

on the air conditioner controller.

6. If the voltage value cannot be measured, check the

circuit for open. If the measured value is within the
specified range, replace the FATC controller.

[Ambient temperature sensor]

1. Remove the sensor and measure the resistance

between terminal No. 5 and 6 on the sensor
connector.

(standard: approx. 25

°C, 2.2 k

Ω

)

In addition, if the resistance is extremely high or low,
replace the sensor.

2. If the measured value is out of the specified range,

replace the ambient temperature sensor. If the
measured value is within the specified range, check
as below.

3. Turn the ignition switch to ON position and measure

the voltage to ambient temperature sensor from the
FATC controller connector.

(standard: approx. 2 V at 25

°C)

4. If the voltage value cannot be measured, check the

circuit for open. If the measured value is within the
specified range, replace the FATC controller.

3) AQS Operation Circuit

1. Ambient temperature switch

2. Sensor ground

3. AQS signal (Output)

4. Ground

5. IGN 2

3. AQS signal (Output)

1. Ambient temperature switch

2. Sensor ground

4. Ground

5. IGN2