Troubleshooting

You will find the source of the trouble more easily by properly using the table shown below. In this table, the numbers indicate the order of priority of the causes of trouble. Check each part in the order shown. If necessary, replace these parts.

Trouble Parts name

No blower operation

No Cool air come out

No warm air came out

Cool air comes out intermittently

Cool air comes out only at high speed

Insufficien t velocity of cool air

Insufficient cooling

No blower control

See page

Fuses

1

1

AC-6 to 13

Inspect Refrigerant Volume

2

T

1

t

AC-19

Inspect Refrigeration System

2

t

1

T

AC-22

Refrigerant Leakage

3

2

1

AC-38

Belt Tension

A

I

3

a

AC-21

A/C Control Cable Adjustment

1

4

AC-47 or 51

Compressor

fl

J

D

AC-25

Magnetic Clutch

5

3

AC-25

Receiver

B

AC-32

Condenser

a

E

*

AC-33

Expansion Valve

®

4

0

AC-34

Evaporator

y

1

AC-36

Blower Motor

3

AC-39

Air Inlet Control Servomotor

AC-40

Mode Control Servomotor

AC-40

Air Mix Control Servomotor

%

10

AC-40

Radiator and Condenser Fan Motor

f

7

AC-41

Power Transistor *1

4

1

AC-42

Blower Resistor

A

1

AC-42

Heater Relay

2

1

AC-43

Blower Fan Relay *2

4

1

AC-43

Magnetic Clutch Relay

AC-43

Fan Relay No. 1

t

7

AC-43

A/C Fan Relay No. 2

6

T

AC-44

A/C Fan Relay No. 3

1

7

AC-44

Engine Main Relay

E-

7

AC-44

Pressure Switch

C-

AC-44

A/C Water Temp. Switch

5

AC-44

Water Temp. Switch, (for Radiator Fan)

6

7

CO Section

Thermistor

AC-46

Room Temp. Sensor *1

a

AC-45

Ambient Temp. Sensor *1

9

AC-45

Solar Sensor *1

|

AC-45

Water Temp. Sensor

t

AC-46

A/C Control Assembly

E

7

I

AC-47 or 51

A/C Amplifier

141

AC-56

System Amplifier *2

4

11

AC-57

AUTO A/C Amplifier *1

10

A

11

AC-58

Water Valve

i

-

Wiring or Wiring Connection

7

11

5

1J

3

AC-6 to 13

Air Leakage From Cooling Unit or Duct

i

Air Inlet Block

1

*1: with AUTO A/C *2 : with Push Type Blower Speed Control Switch A/C Control Assembly

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