Insufficient Cooling Diagnosis - SSANGYONG 2004 Rexton 2.7XDi Workshop Manual

10C-36
TROUBLE DIAGNOSIS

INSUFFICIENT COOLING DIAGNOSIS

Step
1. Check the A/C fuse.
2. Check the operation of the blower motor and cooling fan.
3. Check the accessory belt.
4. Check the A/C condenser for restricted air flow.
1
5. Check the engagement of the compressor clutch.
6. Check the discharge air temperature with the A/C turned ON.
Are all above the operations normal?
1. Turn the ignition to LOCK.
2. Connect the high/low pressure gauges.
2
Are both pressures within the specified value?
1. If it's above the specified value, discharge the refrigerant.
2. If it's below the specified value, add 0.45kg (1 pound) of the refriger-
ant and repair any leaks as needed.
3
3. Recover, evacuate and recharge the A/C system.
Is the repair complete?
1. Start the engine and allow it to run at idle.
2. Turn the A/C switch to ON.
3. Set the blower motor switch to 4th.
4
4. Set the temperature control lever to full cold.
Does the A/C compressor clutch engage?
1. Turn the ignition to LOCK.
5 2. Check the open or short in the compressor wiring.
Is there any open or short in the wiring?
Repair the faulty wiring as needed.
6
Is the repair complete?
Replace the compressor clutch coil.
7
Is the replacement complete?
Check for a knocking noise from the A/C compressor. Cycle the A/C
compressor ON and OFF in order to verify the source of the noise.
8
Do you hear a loud knocking noise?
1. Recover the A/C system refrigerant.
2. Replace the A/C compressor.
3. Evacuate and recharge the A/C system.
9
4. Check the A/C system for leaks.
Is the compressor running normally?
1. Close all of the windows and doors.
2. Set the A/C switch to ON position.
3. Set the intake air control switch to "Fresh Air".
4. Set the blower motor switch to 4th.
10
5. Set the temperature control switch to full cold.
6. Keep it to run at idle for 5 minutes.
7. Check the temperature at the inlet/outlet of the evaporator.
Is there a noticeable difference in the temperature of the evaporator inlet/
outlet pipes?
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
Action Yes No
System OK Go to Step 2
Go to Step 4 Go to Step 3
System OK -
Go to Step 8 Go to Step 5
Go to Step 6 Go to Step 7
System OK -
System OK -
Go to Step 9 Go to Step 10
System OK -
Go to Step 11 Go to Step 13
A/C SYSTEM
REXTON SM - 2004.4