SsangYong Rexton. Manual - part 639

SSANGYONG  Y200

7D-22  AUTOMATIC CONTROL HVAC SYSTEM

Measure the voltage between terminal 4 of the blower motor and mode
door motor ground.

Is the voltage within the specified value?
Repair the connector and the circuit for any wiring or terminal problems.

Is the repair complete?

1. Using the Motor Control Table, measure the voltages at the speci-

fied terminals of the specified motor connectors.

2. Change the mode settings and observe the voltage changes.

Is the voltage within the specified value?
Repair or replace the wiring harness or the defective terminal.

Is the repair complete?

1. Measure the voltages of the connector terminal.
2. Change the mode settings and observe the voltage changes.

Is the voltage within the specified value?
Replace the fuel filter or the fuel line.

Check the connector at the controller.

Is there a defective terminal?
Repair the terminal and replace as needed.

Is the repair complete?
Replace the controller.

Is the repair complete?

Action

Measure the voltage between terminal 4 of the intake control door
motor and ground.
Is the voltage within the specified value?

Repair the connector and the circuit for any wiring or terminal problems.
Is the repair complete?

1. Measure the voltages at the specified terminals of the specified

motor connectors.

2. Change the mode settings and observe the voltage changes
Is the voltage within the specified value?

1. Repair the wiring harness or the defective terminal.
2. Replace the fuel filter or the fuel line as needed.

Is the repair complete?

Check the connector at the controller.
Is there a defective terminal?

Repair the terminal and replace as needed.
Is the repair complete?

Replace the controller.

Is the repair complete?

Action

Step

1

2

3

4

5

6

7

8

9

Step

1

2

3

4

5

6

7

MODE CONTROLS DOES NOT WORK

MODE CONTROLS DOES NOT WORK

Yes

System OK

Go to Step 5

System OK

System OK

Go to Step 3

11 - 14 V

System OK

Go to Step 7

Go to Step 8

System OK

Yes

System OK

Go to Step 5

System OK

System OK

Go to Step 3

11 - 14 V

Go to Step 6

System OK

No

-

Go to Step 4

-

-

Go to Step 17

-

Go to Step 6

Go to Step 9

-

No

-

Go to Step 4

-

-

Go to Step 2

Go to Step 7

-

AUTOMATIC CONTROL HVAC SYSTEM  7D-23

SSANGYONG  Y200

ABNORMAL REFRIGERANT PRESSURE

Step

1

2

3

4

5

6

7

8

9

10

1. Verify whether airflow and excessive refrigerant.

2. Check any restriction at the condenser or radiator.

3. Check the condenser or cooling fan for proper operation.
4. Check any restriction of the refrigerant lines.

Is the high-side refrigerant pressure high abnormally?
1. Recover, evacuate and recharge the A/C system according to the

specified value.

2. Clean the condenser or radiator core.

3. Check the voltage, rpm, direction of the cooling fan.
4. Repair or replace the applicable parts as needed.

Is the high-side pressure within the specified value?
1. Check the amount of the refrigerant.

2. Check the internal faulty of the compressor.

3. Check the faulty of the expansion valve.
4. Check the moisture mix into the system.

Is the high-side refrigerant pressure low abnormally?
1. Replace the compressor and the expansion valve as needed.

2. Recover, evacuate and recharge the A/C system according to the

specified value.

3. Repair any leaks as needed.
Is the repair complete?

1. Check the freezing/clogging of the expansion valve
2. Check the clogging of the receiver-drier.

3. Check the amount of the refrigerant.

Is the low-side refrigerant pressure low abnormally?
1. Clean the expansion valve and replace it as needed.

2. Replace the receiver-drier as needed.
Is the repair complete?

1. Check the expansion valve and the compressor for any faulty.

2. Check the excessive amount of the refrigerant.
Is the low-side refrigerant pressure high abnormally?

1. Replace the expansion valve and the compressor as needed.
2. Add the specified amount of the refrigerant.

Is the repair complete?

1. Check the tightening condition of the refrigerant line coupling and

bolts.

2. Check the faulty O-ring.

3. Check the faulty gasket or seal of the compressor.
Is there any refrigerant leak?

1. Tighten the bolts.

2. Replace the faulty O-ring.
3. Replace the faulty compressor.

Is the repair complete?

Action

Yes

No

System OK

-

Go to Step 10

System OK

System OK

-

Go to Step 8

Go to Step 9

System OK

-

Go to Step 6

Go to Step 7

System OK

-

Go to Step 4

Go to Step 5

System OK

-

Go to Step 2

Go to Step 3

SSANGYONG  Y200

7D-24  AUTOMATIC CONTROL HVAC SYSTEM

1. Remove the controller with connecting the connector.

2. Turn the ignition switch to ON.
3. Set the A/C switch to ON.

4. Measure the voltage between the controller connector A12 (or all for

GSL) and the ground.

Is the voltage within the specified value?
Replace the defective motor.

Is the repair complete?

Action

1. Put the smoke of the cigarette near the air inlet and verify that the

smoke come into the air inlet properly.

2. Remove the controller with connecting the connector.

3. Turn the ignition switch to ON.
4. Measure the voltage between the connector terminals of the inside

air sensor.

Does the measured voltage indicate 2 - 3 V at 25 

°

C?

Repair the open or short of the wiring harness.

Is the repair complete?

1. Remove the inside air temperature sensor.
2. Measure the resistance between the inside air sensor connector

terminals.

Does the measured resistance indicate 2.2 k

Ω

 at 25 

°

C?

Replace the inside air sensor.

Is the repair complete?

Replace the controller.
Is the repair complete?

Action

1. Remove the ambient air temperature sensor.

2. Measure the resistance between the ambient air temperature sensor

connector terminals.

Does the measured resistance indicate 2.2 k

Ω

 at 25 

°

C?

Replace the ambient air temperature sensor.

Is the repair complete?
1. Remove the controller with connecting the connector.

2. Turn the ignition switch to ON.

3. Measure the voltage between terminal B8 and connector A13.
Does the measured voltage indicate 2.2 V at 25 

°

C?

Repair the open or short of the wiring harness.
Is the repair complete?

Replace the controller.

Is the repair complete?

Action

COMPRESSOR MAGNETIC CLUTCH DOES NOT ENGAGE

INSIDE AIR  TEMPERATURE SENSOR ERROR

AMBIENT AIR  TEMPERATURE SENSOR ERROR

Step

1

2

Step

1

2

3

4

5

Step

1

2

3

4

5

Yes

Yes

Yes

No

No

No

System OK

-

Go to

“Insufficient

Cooling

Diagnosis”

11 - 14 V

Go to Step 2

Go to Step 3

Go to Step 2

System OK

-

Go to Step 5

Go to Step 4

System OK

-

System OK

-

Go to Step 3

Go to Step 2

System OK

-

Go to Step 5

Go to Step 4

System OK

-

System OK

-

AUTOMATIC CONTROL HVAC SYSTEM  7D-25

SSANGYONG  Y200

Step

1

2

3

4

5

Step

1

2

3

4

5

6

7

8

9

COOLANT  TEMPERATURE SENSOR ERROR

AIR MIX DOOR ERROR

1. Disconnect the coolant temperature sensor connector from the

FATC harness.

2. Measure the resistance between the coolant temperature sensor

connector terminals..

Does the measured resistance indicate 2.2 k

Ω

 at 25 

°

C?

Replace the coolant temperature sensor.

Is the repair complete?
1. Remove the controller with connecting the connector.

2. Turn the ignition switch to ON.
3. Measure the voltage between terminal B9 and connector A13.

Does the measured voltage indicate 2.2 V at 25 

°

C?

Repair the open or short of the wiring harness.
Is the repair complete?

Replace the controller.
Is the repair complete?

Action

1. Disconnect the I/P wiring harness connector form the air mix door

motor.

2. Use an ohmmeter to measure the resistance between terminals 5

and 7 on the air mix door motor.

Is the resistance within the specified value?
Replace the air mix door motor.

Is the repair complete?

Use an ohmmeter to measure the resistance between terminals 2 and 3
on the air mix door motor.
Does the measured resistance indicate approximately 3 k

Ω

?

Replace the air mix door motor.
Is the repair complete?

Use an ohmmeter to measure the resistance between terminals 6 and
3, 6 and 2 on the air mix door motor.

Does the measured resistance indicate approximately 3 k

Ω

?

Replace the air mix door motor.

Is the repair complete?
Check the connector terminals at the air mix door motor and the wiring
in the FATC harness.

Is there a problem with any terminal on either the harness connector or
the motor connector or the wiring?

1. Remove the FATC controller from the instrument panel.
2. Disconnect the harness connectors of the controller.

3. Examine the connector terminals on the harness connectors and the

controller connectors and the harness wiring.

Is there a problem with any of these connectors or the wiring?

Repair the problem found with a connector terminal or wiring.

Is the repair complete?

Action

Yes

Yes

No

No

Go to Step 3

Go to Step 2

System OK

-

Go to Step 5

Go to Step 4

System OK

-

System OK

-

Go to step 3

open :

 ∞

short : 0 

Ω

Go to Step 2

System OK

-

Go to Step 5

Go to Step 4

System OK

-

Go to Step 7

Go to Step 6

System OK

-

Go to Step 9

Go to Step 8

Go to Step 9

Go to Step 10

System OK

-