Subaru Legacy (2005 year). Manual — part 244

FUEL INJECTION
(FUEL SYSTEMS)

FU(H4DOTC)

Page

1.

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

2.

Throttle Body. . . . . . . . . . . . . . . . . . . . . . . .11

3.

Intake Manifold. . . . . . . . . . . . . . . . . . . . . . ..12

4.

Engine Coolant Temperature Sensor. . . . . . . . . . . . . . 22

5.

Crankshaft Position Sensor. . . . . . . . . . . . . . . . . ...23

6.

Camshaft Position Sensor. . . . . . . . . . . . . . . . . . .24

7.

Knock Sensor. . . . . . . . . . . . . . . . . . . . . . . 25

8.

Throttle Position Sensor. . . . . . . . . . . . . . . . . . . 26

9.

Mass Air Flow and Intake Air Temperature Sensor . . . . . . . . ..27

10.

Manifold Absolute Pressure Sensor. . . . . . . . . . . . . . ..28

11.

Fuel Injector . . . . . . . . . . . . . . . . . . . . . . . ..29

12.

Oil Flow Control Solenoid Valve. . . . . . . . . . . . . . . . 30

13.

Wastegate Control Solenoid Valve . . . . . . . . . . . . . . ...31

14.

Front Oxygen (A/F) Sensor . . . . . . . . . . . . . . . . . ...32

15.

Rear Oxygen Sensor. . . . . . . . . . . . . . . . . . . . .33

16.

Engine Control Module (ECM) . . . . . . . . . . . . . . . . ..34

17.

Main Relay . . . . . . . . . . . . . . . . . . . . . . . . 35

18.

Fuel Pump Relay. . . . . . . . . . . . . . . . . . . . . ...36

19.

Electronic Throttle Control Relay . . . . . . . . . . . . . . . ..37

20.

Fuel Pump Control Unit. . . . . . . . . . . . . . . . . . . .38

21.

Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . ...39

22.

Fuel Tank . . . . . . . . . . . . . . . . . . . . . . . . ..40

23.

Fuel Filler Pipe . . . . . . . . . . . . . . . . . . . . . . ..46

24.

Fuel Pump. . . . . . . . . . . . . . . . . . . . . . . . .48

25.

Fuel Level Sensor . . . . . . . . . . . . . . . . . . . . . .50

26.

Fuel Sub Level Sensor. . . . . . . . . . . . . . . . . . . ..51

27.

Fuel Filter . . . . . . . . . . . . . . . . . . . . . . . . ..53

28.

Fuel Bypass Valve . . . . . . . . . . . . . . . . . . . . . 54

29.

Fuel Delivery, Return and Evaporation Lines. . . . . . . . . . . 55

30.

Fuel System Trouble in General . . . . . . . . . . . . . . . ...58

FU(H4DOTC)-2

FUEL INJECTION (FUEL SYSTEMS)

General Description

1. General Description

A: SPECIFICATION

Fuel tank

Capacity

64

2 (16.9 US gal, 14.1 Imp gal)

Location

Under rear seat

Fuel pump

Type

Impeller

Shutoff discharge pressure

550 — 850 kPa (5.61 — 8.67 kgf/cm

2

, 79.8 — 123.3 psi)

Discharge rate

155

2 (40.9 US gal, 34.1 Imp gal)/h or more

[12 V at 300 kPa (3.06 kgf/cm

2

, 43.5 psi)]

Fuel filter

In-tank type

FU(H4DOTC)-3

FUEL INJECTION (FUEL SYSTEMS)

General Description

B: COMPONENT

1. INTAKE MANIFOLD

FU-01154

(8)

(21)

(9)

(9)

T2

T4

T4

T4

T4

T5

T5

T2

T2

T2

T2

T2

T1

(4)

(5)

(6)

(7)

(7)

(8)

T3

T3

(17)

(18)

(19)

(16)

(15)

(20)

(10)

(12)

(1)

(11)

(10)

(12)

(2)

(3)

(11)

T3

T3

(14)

T4

T4

T4

(3)

(22)

(13)

(23)

(23)

FU(H4DOTC)-4

FUEL INJECTION (FUEL SYSTEMS)

General Description

2. AIR INTAKE SYSTEM

(1)

Fuel pipe ASSY

(12)

O-ring

(21)

Ground stay

(2)

Fuel hose

(13)

Fuel injector pipe LH

(22)

Coolant filler tank stay

(3)

Clip

(14)

Fuel injector pipe RH

(23)

O-ring

(4)

Purge control solenoid valve

(15)

Solenoid valve bracket

(5)

Vacuum hose

(16)

Manifold absolute pressure sensor Tightening torque: N

⋅

m (kgf-m, ft-lb)

(6)

Vacuum control hose

(17)

Filter

T1: 1.5 (0.15, 1.1)

(7)

Intake manifold gasket

(18)

Intake manifold

T2: 6.5 (0.66, 4.8)

(8)

Guide pin

(19)

Wastegate control solenoid valve
ASSY

T3: 8.3 (0.85, 6.1)

(9)

Intake manifold (lower)

T4: 19 (1.9, 14)

(10)

Fuel injector

(20)

Vacuum hose

T5: 25 (2.5, 18.4)

(11)

Seal ring

(1)

O-ring

Tightening torque: N

⋅

m (kgf-m, ft-lb)

(2)

Throttle body

T: 8 (0.8, 5.9)

FU-01155

T

(1)

(2)