Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual — part 585

2014 IMPREZA WRX STI SERVICE MANUAL

QUICK REFERENCE INDEX

G1180BE7

BODY SECTION

EXTERIOR BODY PANELS

EB

CRUISE CONTROL SYSTEM

CC

CRUISE CONTROL SYSTEM
(DIAGNOSTICS)

CC(diag)

IMMOBILIZER (DIAGNOSTICS)

IM(diag)

LAN SYSTEM (DIAGNOSTICS)

LAN(diag)

HVAC SYSTEM (HEATER, VENTILATOR

AND A/C)

AC

Page

1.

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

2.

Air Conditioning System . . . . . . . . . . . . . . . . . . ...17

3.

Refrigerant Pressure with Manifold Gauge Set . . . . . . . . . . 18

4.

Refrigerant Recovery Procedure . . . . . . . . . . . . . . . ..19

5.

Refrigerant Charging Procedure . . . . . . . . . . . . . . . ..20

6.

Refrigerant Leak Check . . . . . . . . . . . . . . . . . . ...23

7.

Compressor Oil . . . . . . . . . . . . . . . . . . . . . . 24

8.

Blower Motor Unit Assembly . . . . . . . . . . . . . . . . . 25

9.

Blower Motor . . . . . . . . . . . . . . . . . . . . . . . 26

10.

Power Transistor (Auto A/C Model) . . . . . . . . . . . . . . .27

11.

Blower Resistor (Manual A/C Model) . . . . . . . . . . . . . ...28

12.

Heater Core . . . . . . . . . . . . . . . . . . . . . . . ..29

13.

Control Unit (Manual A/C Model) . . . . . . . . . . . . . . . .30

14.

Control Unit (Auto A/C Model) . . . . . . . . . . . . . . . . ..31

15.

Compressor . . . . . . . . . . . . . . . . . . . . . . . ..32

16.

Condenser . . . . . . . . . . . . . . . . . . . . . . . . 34

17.

Heater and Cooling Unit . . . . . . . . . . . . . . . . . . ...36

18.

Evaporator . . . . . . . . . . . . . . . . . . . . . . . . 37

19.

Hose and Pipe . . . . . . . . . . . . . . . . . . . . . . ..41

20.

Relay and Fuse . . . . . . . . . . . . . . . . . . . . . . 42

21.

Pressure Switch (Triple Pressure Switch) . . . . . . . . . . . . 43

22.

Ambient Sensor (Auto A/C Model) . . . . . . . . . . . . . . ...44

23.

Sunload Sensor (Auto A/C Model) . . . . . . . . . . . . . . ...46

24.

In-Vehicle Sensor (Auto A/C Model) . . . . . . . . . . . . . . 47

25.

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

26.

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

27.

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

28.

A/C Filter . . . . . . . . . . . . . . . . . . . . . . . . ..52

29.

General Diagnostic Table . . . . . . . . . . . . . . . . . . .53

AC-2

General Description

HVAC SYSTEM (HEATER, VENTILATOR AND A/C)

1. General Description

A: SPECIFICATION

1. HEATER SYSTEM

2. A/C SYSTEM

Item

Specifications

Condition

Heating capacity

5.0 kW (4,299 kcal/h, 17,059

BTU/h) or more

• Air flow control dial: FOOT
• Temperature adjustment dial: MAX HOT
• Temperature difference between hot water
and inlet air: 65°C (149°F)
• Hot water flow rate: 360 L (95.1 US gal,
79.2 Imp gal)/h

Air flow rate

290 m

3

(10,243 cu ft)/h

FOOT mode (FRESH), MAX HOT at 12.5 V

Max air flow rate

480 m

3

(16,954 cu ft)/h

• Temperature adjustment dial: MAX COOL
• Fan dial:
Auto A/C model: 7th position
Manual A/C model: 4th position
• FRESH/RECIRC switch: RECIRC

Heater core size
(height × length × width)

257.5 × 118.5 × 27 mm

(10.1 × 4.67 × 1.06 in)

—

Blower motor

Type

Magnet motor 260 W or less

12 V

Fan type and size
(diameter × width)

Sirocco fan type

150 × 75 mm (5.91 × 2.95 in)

—

Item

Specifications

Type of air conditioner

Reheat air-mix type

Cooling capacity

5.0 kW [at 480 m

3

(16,954 cu ft)/h]

(4,299 kcal/h, 17,059 BTU/h)

Refrigerant

HFC-134a (CH

2

FCF

3

)

[0.5±0.05 kg (1.1±0.11 lb)]

Compressor

Type

Rotary fixed capacity (DVK-10R)

Discharge

105 cc (6.41 cu in)/rev

Max. permissible speed

7,700 rpm

Magnet clutch

Type

Dry, single-disc type

Power consumption

38.8 W

Type of belt

V-belt 4 PK

Pulley dia. (effective dia.)

100 mm (3.9 in)

Pulley ratio

1.32

Condenser

Type

Sub cool type

Core face area

0.188 m

2

(2.002 sq ft)

Core thickness

16 mm (0.63 in)

Radiation area

4.5 m

2

(48.44 sq ft)

Expansion valve

Type

Block

Evaporator

Type

Dual-tank

Dimensions (W × H × T)

290.1 × 172 × 39 mm

(11.42 × 6.77 × 1.54 in)

Blower fan

Fan type

Sirocco fan

Outer diameter × width

150 × 75 mm (5.91 × 2.95 in)

Power consumption

260 W

Condenser fan (Sub fan)

Motor type

Magnet

Power consumption

120 W

Fan outer diameter

318.5 mm (12.5 in)