Subaru Impreza 2003 Service Manual page 129

FUEL INJECTION (FUEL SYSTEMS)
1. General Description ....................................................................................2
2. Throttle Body.............................................................................................15
3. Intake Manifold..........................................................................................16
4. Engine Coolant Temperature Sensor........................................................27
5. Crankshaft Position Sensor.......................................................................28
6. Camshaft Position Sensor.........................................................................29
7. Knock Sensor............................................................................................30
8. Throttle Position Sensor............................................................................31
9. Manifold Absolute Pressure Sensor..........................................................33
10. Intake Air Temperature Sensor .................................................................34
11. Idle Air Control Solenoid Valve .................................................................35
12. EGR Valve ................................................................................................36
13. Air Assist Injector Solenoid Valve .............................................................37
14. Fuel Injector ..............................................................................................38
15. Front Oxygen (A/F) Sensor .......................................................................44
16. Rear Oxygen Sensor.................................................................................46
17. Engine Control Module (ECM) ..................................................................48
18. Main Relay ................................................................................................49
19. Fuel Pump Relay.......................................................................................50
20. Fuel ...........................................................................................................51
21. Fuel Tank ..................................................................................................52
22. Fuel Filler Pipe ..........................................................................................55
23. Fuel Pump.................................................................................................59
24. Fuel Level Sensor .....................................................................................61
25. Fuel Filter ..................................................................................................62
26. Fuel Cut Valve...........................................................................................63
27. Fuel Damper Valve ...................................................................................64
28. Fuel Delivery, Return and Evaporation Lines............................................65
29. Fuel System Trouble in General ...............................................................68
FU(H4SO)
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