Subaru Legacy 2004 Service Manual page 661

FUEL INJECTION
(FUEL SYSTEMS)
FU(H4SO 2.5)
1. General Description ..................................................................................2
2. Throttle Body...........................................................................................11
3. Intake Manifold ........................................................................................12
4. Engine Coolant Temperature Sensor....................................................20
5. Crankshaft Position Sensor ...................................................................21
6. Camshaft Position Sensor .....................................................................22
7. Knock Sensor ..........................................................................................23
8. Throttle Position Sensor ........................................................................24
9. Manifold Absolute Pressure Sensor .....................................................25
10. Mass Air Flow and Intake Air Temperature Sensor .............................26
11. Intake Air Temperature Sensor..............................................................27
12. Tumble Generator Valve Assembly.......................................................28
13. Tumble Generator Valve Actuator .........................................................29
14. EGR Valve ................................................................................................30
15. Fuel Injector.............................................................................................31
16. Front Oxygen (A/F) Sensor ....................................................................34
17. Rear Oxygen Sensor...............................................................................35
18. Engine Control Module (ECM) ...............................................................36
19. Main Relay ...............................................................................................37
20. Fuel Pump Relay .....................................................................................38
21. Electronic Throttle Control Relay ..........................................................39
22. Fuel...........................................................................................................40
23. Fuel Tank .................................................................................................41
24. Fuel Filler Pipe.........................................................................................47
25. Fuel Pump................................................................................................49
26. Fuel Level Sensor ...................................................................................51
27. Fuel Sub Level Sensor............................................................................52
28. Fuel Filter .................................................................................................53
29. Fuel Damper Valve ..................................................................................54
30. Fuel Delivery, Return and Evaporation Lines.......................................55
31. Fuel System Trouble in General ............................................................58
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