Fuel - Subaru Legacy 2004 Service Manual

FUEL INJECTION (FUEL SYSTEMS)
1. General Description ..................................................................................2
2. Throttle Body...........................................................................................11
3. Intake Manifold ........................................................................................12
4. Engine Coolant Temperature Sensor....................................................18
5. Crankshaft Position Sensor ...................................................................19
6. Camshaft Position Sensor .....................................................................20
7. Knock Sensor ..........................................................................................21
8. Throttle Position Sensor ........................................................................22
9. Manifold Absolute Pressure Sensor .....................................................23
10. Mass Air Flow and Intake Air Temperature Sensor .............................24
11. EGR Valve ................................................................................................25
12. Fuel Injector.............................................................................................26
13. Variable Valve Lift Diagnosis Oil Pressure Switch ..............................28
14. Oil Temperature Sensor .........................................................................29
15. Front Oxygen (A/F) Sensor ....................................................................30
16. Rear Oxygen Sensor...............................................................................32
17. Engine Control Module (ECM) ...............................................................34
18. Main Relay ...............................................................................................35
19. Fuel Pump Relay .....................................................................................36
20. Electronic Throttle Control Relay ..........................................................37
21. Fuel Pump Control Unit ..........................................................................38
22.

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

23. Fuel Tank .................................................................................................40
24. Fuel Filler Pipe.........................................................................................46
25. Fuel Pump................................................................................................48
26. Fuel Level Sensor ...................................................................................50
27. Fuel Sub Level Sensor............................................................................51
28. Fuel Filter .................................................................................................52
29. Fuel Bypass Valve...................................................................................53
30. Fuel Delivery, Return and Evaporation Lines.......................................54
31. Fuel System Trouble in General ............................................................57
FU(H6DO)
Page