SsangYong Korando II (1996-2006 year). Manual — part 384
MANUAL & SEMIAUTO-HVAC 7C-5
SSANGYONG MY2002
DEFECTIVES IN FAN MOTOR CIRCUIT
Fan Motor Does Not Run
Blown fuse
Battery voltage is low
Faulty wiring
Faulty ground
Checks
Action
Check for short and replace fuse.
Check battery voltage.
Check connectors’ connection.
Do not apply grease. This can cause voltage down.
Remove body painting and completely ground,
Tighten ground bolts and make sure body ground
connection.
Fan Motor Runs in ‘4’position Only (‘3’, ‘2’, ‘1’ : Does Not Run)
Motor Runs With Poor Blowing
Blown resister temperature fuse
Air leakage in parts connection
Checks
Action
Replace resistor.
Check heater, cooling unit and blower for proper
connection.
Clogged or blocked intake grille
Checks
Action
Clogged or blocked intake grille reduces blowing
capacity.
Frosted Evaporator
Faulty thermo amp
Checks
Action
Frosted evaporator reduces cooling capacity.
Off compressor and maximize blowing capacity
SSANGYONG MY2002
7C-6 MANUAL & SEMIAUTO-HVAC
Oily clutch plate
Low voltage
Faulty electric connection or operation
Checks
Action
Clean oily plate using cleaning agent.
Charge battery or check for cause.
Check wire continuity
Check A/C switch and fan switch for continuity and
ground.
Magnetic Clutch Plays By Hand Only
Excessive clearance between
Clutch plate and clutch coil
Checks
Action
Adjust clutch clearance (0.2-0.6mm).
DEFECTIVES IN COMPRESSOR CIRCUIT
Compressor Does Not Run
Faulty high/low pressure
Faulty A/C relay
Checks
Action
Check compressor magnet voltage supply.
A/C relay.
Magnetic Clutch Slips / Idles
MANUAL & SEMIAUTO-HVAC 7C-7
SSANGYONG MY2002
DIAGNOSIS USING THE MANIFOLD GAUGE
On normal operation during the cooling cycle, the
manifold gauge must indicate approximately 1.5 - 2.0
kg/cm
2
at low pressure side and 14.5 - 15 kg/cm
2
at
high pressure side, on condition that the temperature
at the cooler inlet, 30
º
C - 35
º
C, 2,000 rpm of the
engine rpm , full cold and maximum blower speed.
Cause
Symptom
Action
1. High and low pressure are abnormally low.
2. Air at cooler outlet is not cold.
1. High and low pressure are abnormally high.
1. High and low pressure are abnormally high.
2. Connection at the low pressure is not cold.
•
There is a gas leak in the
cooling system.
•
Insufficient cooling and
faulty condenser cooling
by excessive
refrigerant.
•
Belt is slipped
•
There is an air in the
cooling system
•
Check the oil leak,
repair
•
Add the refrigerant
•
Keep the specified
amount of the
refrigerant, Clean the
condenser
•
Repair the belt
•
Clean and repair the
receiver-drier
•
Check the oil
contamination etc.
YAD7B070
YAD7B080
YAD7B100
YAD7B090
SSANGYONG MY2002
7C-8 MANUAL & SEMIAUTO-HVAC
1. The low-pressure and high-pressure are exces-
sive high.
2. There are a lot of moistures in the connection
of the low-side pressure
Cause
Symptom
Action
1. The low-pressure side indicates excessive high
and high-pressure indicates excessive low.
2. There is a moisture in the connection of the re-
ceiver-drier and the front/back of the expan-
sion valve.
1. The low-side pressure is high or normal inter-
mittently.
•
The dust and moisture
etc. are frozen at the
expansion valve
•
A gas leak in the heat
reducer
•
The mixed moisture is
frozen at the expansion
valve
•
The faulty expansion
valve, the improper
installation of the heat
reducer
•
Fail to control the flow
rate
•
Repair the receiver-drier
•
Replace the expansion
valve for the faulty heat
reducer
•
Repair the receiver-drier
and perform the
bleeding
•
Repair the receiver-drier
•
Check the oil
contamination etc.
1. The low-pressure is excessive high and high-
pressure is excessive low.
•
There is an oil leak in
the compressor
•
Replace the compressor
YAD7B110
YAD7B130
YAD7B120
YAD7B140
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