SsangYong Musso. Manual - part 531

7B/C-4  MANUAL & SEMIAUTO-HVAC

DIAGNOSIS

m

MANUAL & SEMIAUTO-HVAC  7B/C-5

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.

DEFECTIVES IN FAN MOTOR CIRCUIT

Fan Motor Does Not Run

Checks

Blown fuse

Battery voltage is low

Faulty wiring

Faulty ground

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.

Checks

Blown resister temperature fuse

Air leakage in parts connection

Action

Replace resistor.

Check heater, cooling unit and blower for proper connection.

Fan Motor Runs in ‘4’position Only (‘3’, ‘2’, ‘1’ : Does Not Run)

Frosted Evaporator

DEFECTIVES IN COMPRESSOR CIRCUIT

Compressor Does Not Run

Checks

Faulty thermo amp

Action

Frosted evaporator reduces cooling capacity.

Off compressor and maximize blowing capacity

Checks

Faulty high/low pressure

Faulty A/C relay

Action

Check compressor magnet voltage supply.

A/C relay.

Checks

Oily clutch plate

Low voltage

Faulty electric connection or operation

Magnetic Clutch Slips /Idles

Checks

Clogged or blocked intake grille

Action

Clogged or blocked intake grille reduces blowing capacity.

Motor Runs With Poor Blowing

Checks

Excessive clearance between

Clutch plate and clutch coil

Action

Adjust clutch clearance (0.2-0.6mm).

Magnetic Clutch Plays By Hand Only

7B/C-6  MANUAL & SEMIAUTO-HVAC

COMPONENT LOCATOR

VENTILATION

MANUAL & SEMIAUTO-HVAC  7B/C-7

Switch

Door

VENT Door

FOOT Door

DEF Door

INTAKE Door

AIR MIX Door

Air Flow

Mode Switch

VENT

A

C

D

Recirculation Switch

Temperature

Control Lever

[MANUAL]

[SEMI AUTO]

-

-

-

-

B/L

B

B

D

FOOT

C

A

D

D/F

C

B

B

DEF

C

C

A

REC

FRE

-

-

A

B

C

INDI.

On

-

-

-

A

INDI.

Off

-

-

-

B