Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Impreza 2001-2002.2004-2007 Approved Subaru Impreza 2004 WRX STi 08. MECHANISM AND FUNCTION 03. EMISSION CONTROL (Aux. Emission Control Devices) 02. Schematic Diagrams
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W1860BE.book Page 4 Tuesday, January 28, 2003 11:01 PM
SCHEMATIC DIAGRAMS
EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)
2. Schematic Diagrams
(21)
(22) (35)
(30) (29) (16) (36)
(32)
(31) (37)
N PN D
(38)
(28) (33)
(1)
(34)
(27)
(40) (17)
(45)
(47) (44)
(15) (39)
(41)
(12) (48)
(43)
(46) (11)
(42)
(10) (23)
(7)
(9)
(18)
(6)
(49)
(14)
(5) (2)
(6)
(13)
(24)
(8)
(3)
(4)
(19)
(25)
(26)
(20)
EC-00209
EC(H4SO)-4
W1860BE.book Page 5 Tuesday, January 28, 2003 11:01 PM
SCHEMATIC DIAGRAMS
EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)
(1) Engine control module (ECM) (18) Fuel filter (35) Ignition switch
(2) Ignition coil and igniter assembly (19) Front catalytic converter (36) Transmission control module
(TCM) (AT models only)
(3) Crankshaft position sensor (20) Rear catalytic converter (37) Vehicle speed sensor
(4) Camshaft position sensor (21) Radiator fan (38) Data link connector
(5) Throttle position sensor (22) Radiator fan relay (39) Fuel tank pressure sensor
(6) Fuel injector (23) Air assist injector solenoid valve (40) Pressure control solenoid valve
(7) Pressure regulator (24) Knock sensor (41) Fuel temperature sensor
(8) Engine coolant temperature sen- (25) Front oxygen (A/F) sensor (42) Fuel level sensor
sor
(9) Manifold absolute pressure sensor (26) Rear oxygen sensor (43) Drain filter
(10) Idle air control solenoid valve (27) Atmospheric pressure sensor (44) Vent valve
(11) Purge control solenoid valve (28) A/C compressor (45) Shut-off valve
(12) Fuel pump (29) Inhibitor switch (AT models only) (46) Drain valve
(13) PCV valve (30) Neutral switch (MT models only) (47) Fuel cut valve
(14) Air cleaner element (31) Engine malfunction indicator light (48) Fuel tank sensor control valve
(15) Canister (32) Tachometer (49) Intake air temperature sensor
(16) Main relay (33) A/C relay
(17) Fuel pump relay (34) A/C control module
EC(H4SO)-5
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