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