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System Block Diagram

G16344830Courtesy of SUBARU OF AMERICA, INC.
(1) Engine control module (ECM)
(2) Ignition coil
(3) Crankshaft position sensor
(4) Intake camshaft position sensor
(5) Exhaust camshaft position sensor
(6) Electronic throttle control sensor
(7) Fuel injector
(8) Engine coolant temperature sensor (outlet)
(9) Engine coolant temperature sensor (inlet)
(10) Thermo control valve ASSY
(11) Manifold absolute pressure sensor
(12) Mass air flow and intake air temperature sensor
(13) Purge control solenoid valve
(14) Knock sensor
(15) PCV valve
(16) Air cleaner
(17) Canister
(18) Main relay
(19) Fuel pump relay
(20) Fuel filter
(21) Fuel pump
(22) Front catalytic converter
(23) Rear catalytic converter
(24) Front oxygen (A/F) sensor
(25) Rear oxygen sensor
(26) Radiator fan relay
(27) Radiator fan
(28) Combination meter
(29) Air filter
(30) Fuel level sensor
(31) Resonator chamber
(32) EGR control valve
(33) Intake oil control solenoid valve
(34) Exhaust oil control solenoid valve
(35) Engine oil temperature sensor
(36) Leak check valve ASSY
(37) Tumble generator valve actuator
(38) Parking/neutral position switch
(39) Accelerator pedal position sensor
(40) EGR cooler
(41) High-pressure fuel pump
(42) High-pressure fuel pressure sensor
(43) Transmission control module (TCM)
(44) VDC control module and hydraulic control unit (VDCCM & H/U)
(45) ABS wheel speed sensor
(46) Data link connector
(47) To IG 1 relay
(48) A/C compressor
(49) A/C relay
(50) A/C control panel
G00674407Courtesy of SUBARU OF AMERICA, INC.
(1) Engine control module (ECM)
(2) Starter
(3) Fuel tank
(4) Mass air flow and intake air temperature sensor
(5) Fuel injector LH
(6) Camshaft position sensor LH
(7) Rear oxygen sensor
(8) Front oxygen (A/F) sensor
(9) High-pressure fuel pump
(10) Engine coolant temperature sensor
(11) Oil pressure sensor
(12) Electronic throttle control sensor
(13) Camshaft position sensor RH
(14) Fuel pressure sensor
(15) Fuel injector RH
(16) Crankshaft position sensor
(17) Fuel filter
(18) Pressure regulator
(19) Fuel pump