Controller Assembly; Sensors And Motors; Inside Air Temperature Sensor; Ambient Air Temperature Sensor - SSANGYONG 2004 Rexton 2.7XDi Workshop Manual

SYSTEM COMPONENTS - CONTROL

Controller Assembly

The operation of the A/C system is controlled by the switched
on the control head. This console-mounted controller con-
sist of control knobs and a vacuum fluorescent display (VFD)
indicating the status of the control settings selected.

Sensors and Motors

• Inside air sensor, ambient sensor, coolant temperature
and sun sensor
• Door mode motor, intake air control door motor, air
mix door motor

Inside Air Temperature Sensor

Inside air temperature sensor located in left side of full
automatic temperature control (FATC) controller, is a sen-
sor that detects the interior air temperature and a ther-
mistor that decreases its resistance when temperature up
and increases when temperature down. If there is open or
short in the sensors, 25°C (77°F) will be substitute.
Inspection
When the inside air temperature sensor error displays,
check the followings;
1. Remove the inside air temperature sensor and measure
the resistance between the sensor connectors.
(approximately 2.2 KW at 25°C) Replace the inside
air temperature sensor when the resistance value is
excessive low or high.
2. Replace the inside air temperature sensor for outside
the specified value and check the followings for within
the specified value;
3. Turn the ignition ON.
4. Measure the voltage between A13 and A16 terminal
of the AUTO temperature control connector.
(approximately 2.2 V at 25°C)
5. Verify the open circuit of the wiring harness when
you can not measure the voltage value and replace
the AUTO temperature control when it's normal.

Ambient Air Temperature Sensor

Ambient air temperature sensor is a thermistor (NTC
resistance) that decreases its resistance when tempera-
ture up and increases when temperature down and it de-
tects ambient air temperature. If there is open or short in
the sensors, 25°C (77°F) will be substitute. The sensor is
located in the left back side of front bumper.
A/C SYSTEM
REXTON SM - 2004.4
Inspection
When the ambient temperature sensor error displays,
check the followings;
1. Remove the ambient temperature sensor and then
measure the resistance between the sensor
connectors.
(approximately 2.2 KW at 25°C) Replace the ambient
temperature sensor when the resistance value is
excessive low or high.
2. Replace the ambient temperature sensor for outside
the specified value and check the followings for within
the specified value;
3. Turn the ignition ON.
4. Measure the voltage between A13 and B8 terminal of
the AUTO temperature control connector.
(approximately 2.2 V at 25°C)
5. Verify the open circuit of the wiring harness when
you can not measure the voltage value and replace
the AUTO temperature control when it's normal.
Coolant Temperature Sensor
Coolant temperature sensor is a thermistor that decreases
its resistance when temperature up and increases when
temperature down. It detects coolant temperature to oper-
ate the blower speed at low when the coolant temperature
is less than 50°C (122°F). If the coolant temperature sen-
sor is open or short, 100°C (212°F) will be substitute.
Inspection
When the coolant temperature sensor error displays, check
the followings;
1. Measure the resistance between the sensor
connectors. (approximately 2.2 KW at 25°C)
2. Replace the coolant temperature sensor for outside
the specified value and check the followings for within
the specified value;
3. Turn the ignition ON.
4. Measure the voltage between A13 and B9 terminal of
the AUTO temperature control connector.
(approximately 2.2 V at 25°C)
5. Verify the open circuit of the wiring harness when
you can not measure the voltage value and replace
the AUTO temperature control when it's normal.
10C-47
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN