Subaru Legacy III (2000-2003 year). Manual - part 853

2003 LEGACY SERVICE MANUAL

QUICK REFERENCE INDEX

BODY SECTION

G2300GE7

CRUISE CONTROL SYSTEM

CC

CRUISE CONTROL SYSTEM  
(DIAGNOSTICS)

CC

IMMOBILIZER (DIAGNOSTICS)

IM

HVAC SYSTEM (HEATER, VENTILATOR 
AND A/C)

AC

Page

1.

General Description ....................................................................................2

2.

Refrigerant Pressure with Manifold Gauge Set.........................................22

3.

Refrigerant Recovery Procedure...............................................................23

4.

Refrigerant Charging Procedure ...............................................................24

5.

Refrigerant Leak Check ............................................................................27

6.

Compressor Oil .........................................................................................29

7.

Heater Unit ................................................................................................30

8.

Blower Motor Assembly ............................................................................31

9.

Heater Blower Resistor .............................................................................32

10.

Heater Core...............................................................................................33

11.

Control Unit ...............................................................................................34

12.

Compressor...............................................................................................35

13.

Condenser.................................................................................................37

14.

Receiver Drier ...........................................................................................39

15.

Intake Unit .................................................................................................40

16.

Flexible Hose ............................................................................................42

17.

Relay and Fuse .........................................................................................43

18.

Pressure Switch (Dual Switch) ..................................................................45

19.

Pressure Switch (Triple Switch) ................................................................46

20.

Ambient Sensor (Auto A/C) .......................................................................47

21.

Sunload Sensor (Auto A/C) .......................................................................48

22.

Air Vent Grille ............................................................................................49

23.

Heater Duct ...............................................................................................50

24.

Heater Vent Duct.......................................................................................51

25.

General Diagnostics ..................................................................................52

AC-2

HVAC SYSTEM (HEATER, VENTILATOR AND A/C)

GENERAL DESCRIPTION

1. General Description

A: SPECIFICATIONS

1. HEATER SYSTEM

Item

Specifications

Condition

Heating capacity

LHD model

5.0 kW (4,300 kcal/h, 17,062 BTU/
h) or more

• Mode selector switch: HEAT
• Temperature control switch: FULL HOT
• Temperature difference between hot water 
and inlet air: 65

°

C (149

°

F) 

• Hot water flow rate: 360 

2

 (95.1 US gal, 

79.2 Imp gal)/h

RHD model

5.58 kW (4,800 kcal/h, 19,046 
BTU/h) or more

Air flow rate

LHD model

300 m

3

 (10,593 cu ft)/h

Heat mode (FRESH), FULL HOT at 12.5 V

RHD model

300 m

3

 (10,593 cu ft)/h

Max air flow rate

LHD model

500 m

3

 (17,655 cu ft)/h

• Temperature control switch: FULL COLD
• Blower fan speed: 4th position
• Mode selector lever: RECIRC

RHD model

480 m

3

 (16,949 cu ft)/h

Heater core size 
(height 

×

 length 

×

 width)

LHD model

193.5 

×

 152 

×

 35.0 mm

(7.62 

×

 5.98 

×

 1.378 in)

—

RHD model

181.5 

×

 160 

×

 27 mm

(7.15 

×

 6.30 

×

 1.06 in)

Blower 
motor

Type

LHD model

Magnet motor 230 W or less

at 12 V

RHD model

Magnet motor 220 W or less

Fan type and size 
(diameter 

×

 width)

LHD model

Sirocco fan type 
150 

×

 75 mm (5.91 

×

 2.95 in)

—

RHD model

Sirocco fan type 
150 

×

 75 mm (5.91 

×

 2.95 in)

AC-3

HVAC SYSTEM (HEATER, VENTILATOR AND A/C)

GENERAL DESCRIPTION

2. A/C SYSTEM (4 CYLINDER)

• LHD Model

Item

Specifications

Type of air conditioner

Reheat air-mix type

Cooling capacity

5.2 kW

(4,471 kcal/h, 17,741 BTU/h)

Refrigerant

HFC-134a (CH

2

FCF

3

)

[0.65

±

0.05 kg (1.43

±

0.11 lb)]

Compressor

Type

5-vane rotary, fix volume (DKV-14G)

Discharge

140 cm

3

 (8.54 cu in)/rev

Max. permissible speed

7,000 rpm

Magnet clutch

Type

Dry, single-disc type

Power consumption

38 W

Type of belt

V-Ribbed 4 PK

Pulley dia. (effective dia.)

125 mm (4.92 in)

Pulley ratio

1.064

Condenser

Type

Corrugated fin (Multi-flow)

Core face area

0.22 m

2

 (2.37 sq ft)

Core thickness

21 mm (0.83 in)

Radiation area

6.52 m

2

 (70 sq ft)

Receiver drier

Effective inner capacity

250 cm

3

 (15.26 cu in)

Expansion valve

Type

External equalizing

Evaporator

Type

Single tank

Dimensions (W 

×

 H 

×

 T)

235 

×

 224 

×

 60 mm

(9.25 

×

 8.82 

×

 2.36 in)

Blower fan

Fan type

Sirocco fan

Outer diameter 

×

 width

150 

×

 75 mm (5.91 

×

 2.95 in)

Power consumption

230 W at 12 V

Condenser fan (Sub fan)

Motor type

Magnet

Power consumption

75 W at 12 V

Fan outer diameter

300 mm (11.81 in)

Radiator fan (Main fan)

Motor type

Magnet

Power consumption

75 W at 12 V

Fan outer diameter

300 mm (11.81 in)

Idling speed (A/C ON)

MPFI model

850

±

100 rpm 

Dual switch
(Pressure 
switch)

Low-pressure 
switch operat-
ing pressure

ON 

→

 OFF

177

±

25 kPa

(1.80

±

0.25 kg/cm

2

, 25.6

±

3.6 psi)

OFF 

→

 ON

216

+39

/

−

25  

 kPa

(2.2

+0.4

/

−

0.25

 kg/cm

2

, 31

+5.7

/

−

3.6

 psi)

High-pres-
sure switch 
operating 
pressure

ON 

→

 OFF

2,942

±

196 kPa 

(30

±

2 kg/cm

2

, 427

±

28 psi)

DIFF

588

±

196 kPa 

(6

±

2 kg/cm

2

, 85

±

28 psi)

Thermo control amplifier 
working temperature
(Evaporator outlet air)

(1) 1.5±0.5

°

C (35±0.9

°

F)

(2) 3.0±0.3

°

C (37±0.5

°

F)

(3) Repeat

AC-00459

( 1 )

( 2 )

( 3 )

OFF

ON