SsangYong Rexton. Service manual — part 636
SSANGYONG Y200
7D-10 AUTOMATIC CONTROL HVAC SYSTEM
Intake Control Door Motor
The mode motor set the I/A mode by the control signal
of the AUTO temperature control.
When the mode displayed in the AUTO temperature
control is different from the actual mode, check the
followings;
•
Turn the ignition ON.
•
Measure the voltage between the (+) terminals at
each mode and verify that changes from 0V before
the mode selection to 12V after the mode selection.
•
If the value is the specified value, check the open
or short circuit.
•
I f t h e w i r i n g i s n o r m a l , r e p l a c e t h e A U T O
temperature control.
•
If the voltage value is outside the specified value,
replace the I/A mode motor.
•
Check the motor operation connecting the (+)
terminal to No.4 of the motor connector and
connecting No.5 and No.7 to (-) terminal sequentially
using 12 V power.
Inspection
When the vent inlet mode displayed in the AUTO
temperature control is different from the actual mode,
check the followings;
1. Turn the ignition ON.
2. Measure the voltage between positive terminal and
negative terminal of the Mtr-Act, AI connector.
(Specified value; 12 V)
3. Measure the voltage between P1, P2, P3 and (+)
terminal. (If it changes from 0V before the mode
selection to 12 V after the mode selection, it’s
normal)
4. If the value is outside the specified value, check
the open or short circuit.
5. I f t h e w i r i n g i s n o r m a l , r e p l a c e t h e A U T O
temperature control.
6. If the value is the specified value, replace the Mtr-
Act, AI.
7. Check the motor operation connecting the (+)
terminal to No.4 of the motor connector and
connecting No.5 and No.7 to (-) terminal sequentially
using 12 V power.
Mode Control Motor
The control motor sets the mode of Vent, Bi-level, Foot,
Foot/Def or Def by opening/closing the outlet damper
at the outlet of Vent, Foot or Def according to control
signal of the AUTO temperature control.
YAD7D120
AUTOMATIC CONTROL HVAC SYSTEM 7D-11
SSANGYONG Y200
Inspection
When the vent inlet mode displayed in the AUTO
temperature control is different from the actual mode,
check the followings;
1. Turn the ignition ON.
2. Measure the voltage between P1 - P5 and (+)
terminal. (If it changes from 0V before the mode
selection to 12 V after the mode selection, it’s
normal)
3. If the value is outside the specified value, check
the open or short circuit.
4. I f t h e w i r i n g i s n o r m a l , r e p l a c e t h e A U T O
temperature control.
5. If the value is the specified value, replace the Mtr-
Act, AI.
6. Check the motor operation connecting the (+) (-)
terminal to the Mtr-Act mode and each terminal P1
- P5 to (-) terminal sequentially using 12 V power.
Air Mix Door Motor
The air mix door motor is located on left side of heater
module. The air mix door motor controls the exhaust
air temperature by the signal of the FATC.
Inspection
When the air mix door motor error displays, check the
followings;
1. Turn the ignition ON.
2. Measure the voltage within P1, P2 terminals
(specified value; 12 V) and a,b (specified value;
5).
3. If the value is outside the specified value, check
the open or short circuit.
4. If the wiring is normal, replace the Mtr-Act, Temp.
5. If the (+) (-) terminal connects to P1 and P2 of the
Mtr-Act, Temp alternately, the output by the each
mode is following;
AMD
Cool
Hot
Mode
P1 (-), P2 (+)
P1 (+), P2 (-)
Bc Resistance
Below 300
Ω
Above 2.4 K
Ω
YAD7D130
YAD7D140
SSANGYONG Y200
7D-12 AUTOMATIC CONTROL HVAC SYSTEM
Power Transistor
Power transistor controls the blower airflow and it
receives the airflow control signal from the AUTO
temperature control in order to for blower motor to shift
the speed without step by adding the current to the
power transistor basic current.
Inspection
When the power transistor error displays, check the
followings.
1. Turn the ignition ON.
2. Measure the voltage between blower connectors by
changing the step from 1st to 6th.
3. The voltage value by each step is the followings;
(specified value; 0.5)
4. If the value is outside the specified value, check
the open or short circuit.
5. When there is no problem in the wiring harness,
replace the power transistor.
1st
4.5 V
2nd
6.0 V
3rd
7.5 V
4th
9.0 V
5th
11.0 V
6th
Relay Hi
AUTOMATIC CONTROL HVAC SYSTEM 7D-13
SSANGYONG Y200
High (Gauge Pressure)
Low (Gauge Pressure)
Compressor
Receiver-Drier
Refrigerant
Oil
Condenser
A/C Pressure Sensor
Blower Motor
Heater Core
Type
Model
Displacement
Max. RPM
Material
Capacity
Type
Capacity
Type
Capacity
Max. Capacity
A/C ON
A/C OFF
A/C ON
A/C OFF
Max. Capacity
Fin Pitch
Size
Capacity
Component
SPECIFICATIONS
Description
Variable Displacement
V-5 Compressor
9.8 - 151 cc/rev
6,000 - 6,500 rpm
AL R/DRIER
210 cc
R-134a
750 ± 20 g
Synthetic PAG Oil
220 cc
11,400 Kcal/h
305 psi
425 psi
39 psi
30 psi
7,475 - 9,075 Kcal/h
1.52 mm
200.5 x 168.2 x 25.0 mm
8,250 Kcal/h
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