ENGINE PERFORMANCE – Subaru Legacy i 2009 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

2.5L

2.5L, Engine Performance Wiring Diagram (1 of 4) for Subaru Legacy i 2009

List of elements for 2.5L, Engine Performance Wiring Diagram (1 of 4) for Subaru Legacy i 2009:

• (right kick panel) a/f oxygen sensor relay
• (right kick panel) main relay
• (right rear of engine) ge
• B134
• B137
• B145
• B186
• Electronic throttle control relay
• Engine control module (ecm) (right side of dash)
• Fuse 15a
• Ge (right rear of engine)
• Hot at all times
• Left oil switching solenoid valve (left side of engine compt)
• Left vvl diagnosis oil pressure switch (rear of left cylinder head)
• Main fuse box (m/b) (left side of engine compt)
• Nca
• Oil temperature sensor (rear of right cylinder head)
• Pcv diagnosis connector
• Pnk
• Power steering oil pressure switch (on power steering oil pump)
• Red
• Right oil switching solenoid valve (right side of engine compt)
• Right vvl diagnosis oil pressure switch (rear of right cylinder head)
• Sbf-5 fuse 30a
• Sbf-7 fuse 30a

2.5L, Engine Performance Wiring Diagram (2 of 4) for Subaru Legacy i 2009

List of elements for 2.5L, Engine Performance Wiring Diagram (2 of 4) for Subaru Legacy i 2009:

• (in fuel tank) fuel pump assembly
• (left rear wheelwell) (sedan) fuel pump condenser
• (sedan: under right front seat) (wagon: under front passenger seat) gb-8
• 15a
• B52
• Combination meter
• Computer data lines system
• Engine coolant temp gauge
• Front oxygen (a/f) sensor (right side of engine)
• Fuel pump
• Fuel pump relay
• Fuel temp sensor
• Fuse & relay box (f/b) (left kick panel)
• Fuse 15a
• Gb-3
• Ge (right rear of engine)
• Hot at all times
• Hot in on or start
• I/f
• I10
• Ignition coil & ignitor assembly (right rear of engine)
• Light ind warning oil pressure
• Malfunction ind light
• Micro computer
• Nca
• Oil pressure switch (upper front center of engine)
• Pnk
• Power circuit
• Purge control solenoid valve (right side of engine)
• R168
• Rear oxygen sensor (right side of engine)
• Receiver transceiver & can
• Red
• Speedo- meter
• Tacho- meter

2.5L, Engine Performance Wiring Diagram (3 of 4) for Subaru Legacy i 2009

List of elements for 2.5L, Engine Performance Wiring Diagram (3 of 4) for Subaru Legacy i 2009:

• (behind rear bumper) fuel tank pressure sensor
• (front of engine) mass air flow & intake air temperature sensor
• (left side of dash) accelerator pedal position sensor
• (right kick panel) joint connector b122
• (right kick panel) joint connector b83
• B52
• Computer data lines system
• Drain valve
• Egr valve (left rear of engine)
• Electronic throttle control (right rear of engine)
• Engine coolant temperature sensor (right rear of engine)
• Fuse & relay box (f/b) (left kick panel)
• Fuse 15a
• Hot w/ ig2 relay energized
• Manifold absolute pressure sensor (right rear of engine)
• Nca
• Pnk
• Pressure control solenoid valve (center rear of fuel tank)
• Red

2.5L, Engine Performance Wiring Diagram (4 of 4) for Subaru Legacy i 2009

List of elements for 2.5L, Engine Performance Wiring Diagram (4 of 4) for Subaru Legacy i 2009:

• (fuse & relay box (f/b)) remote engine start control module
• (left side of dash) tcm
• (right rear of engine) ge
• (top of left cylinder head) fuel injectors 2 & 4
• (top of right cylinder head) fuel injectors 1 & 3
• A/t
• Air conditioning system
• Anti-theft system
• B135
• B136
• B186
• B55
• Camshaft position sensor (left front side of engine)
• Clutch switch (left side of dash)
• Computer data lines system
• Cooling fans system
• Crankshaft position sensor (front of engine)
• Cruise control system
• Engine control module (ecm) (right side of dash)
• Fuse 7.5a
• Ge (right rear of engine)
• Hot at all times
• Joint connector b138
• Knock sensor (top left of engine)
• M/t
• Main fuse box (m/b) (left side of engine compt)
• Nca
• Pnk
• Red
• Starting/ charging system
• Starting/charging system

2.5L TURBO

2.5L Turbo, Engine Performance Wiring Diagram (1 of 5) for Subaru Legacy i 2009

List of elements for 2.5L Turbo, Engine Performance Wiring Diagram (1 of 5) for Subaru Legacy i 2009:

• (on top left of engine) ge-1
• (right kick panel) joint connector b122
• A/t
• Accelerator pedal position sensor (left side of dash)
• Air conditioning system
• Anti-theft system
• B135
• B136
• B52
• Clutch switch (left side of dash)
• Computer data lines system
• Cooling fans system
• Cruise control system
• Electronic throttle control relay
• Engine control module (ecm) (right side of dash)
• Fuel tank pressure sensor (behind rear bumper)
• Fuse & relay box (f/b) (left kick of dash)
• Fuse 15a
• Hot w/ ig2 relay energized
• Joint connector b83 (right kick panel)
• M/t
• Mass air flow meter & intake air temperature sensor (front of engine)
• Nca
• Pnk
• Red
• Remote engine start control module (fuse & relay box (f/b))
• Starting/charging system

2.5L Turbo, Engine Performance Wiring Diagram (2 of 5) for Subaru Legacy i 2009

List of elements for 2.5L Turbo, Engine Performance Wiring Diagram (2 of 5) for Subaru Legacy i 2009:

• (center rear of fuel tank) pressure control solenoid valve
• (right kick panel) main relay
• B145
• B186
• Can transceiver & receiver
• Combination meter
• Computer data lines system
• Drain valve
• Drive circuit
• Engine coolant temperature gauge
• Fuel pump assembly (in fuel tank)
• Fuel pump control unit (sedan) fuel pump control module (wagon) (wagon: left side of luggage compt) (sedan: left side of trunk)
• Fuel pump relay
• Fuel temp sensor
• Fuse 15a
• Fuse 7.5a
• Fuse sbf-5 30a
• Fuse sbf-7 30a
• Gb-3
• Gb-5 (right side of dash)
• Gb-9 (sedan: top center of trunk) (wagon: left "d" pillar)
• Hot at all times
• I/f
• I10
• Ind s# prohibiton
• M/t
• Main fuse box (m/b) (left side of engine compt)
• Malfunction ind light
• Micro computer
• Nca
• Oil pressure
• One step dimmer circuit
• Pnk
• Power circuit
• Red
• Speedo- meter
• Tacho- meter
• Up ind shift
• Warning ind

2.5L Turbo, Engine Performance Wiring Diagram (3 of 5) for Subaru Legacy i 2009

List of elements for 2.5L Turbo, Engine Performance Wiring Diagram (3 of 5) for Subaru Legacy i 2009:

• (on top left of engine) ge-1
• B143
• B144
• B52
• F37
• Front oxygen (a/f) sensor (right side of engine)
• Fuse & relay box (f/b) (left kick panel)
• Fuse 10a
• Fuse 15a
• Fuse 60a
• Ge-1 (top left of engine)
• Hot at all times
• Hot in on or start
• Joint connector b138
• Left secondary air combination valve (left side of engine)
• Main fuse box (m/b) (left side of engine compt)
• Nca
• Oil pressure switch (upper front center of engine)
• Purge control solenoid valve 2 (right rear of engine)
• R168
• Rear oxygen sensor (left rear of transmission)
• Red
• Relay holder (left side of engine compt)
• Secondary air combination valve relay 1
• Secondary air combination valve relay 2
• Secondary air pump (left front of engine compt)
• Secondary air pump relay
• Wastegate control solenoid (right rear of engine)

2.5L Turbo, Engine Performance Wiring Diagram (4 of 5) for Subaru Legacy i 2009

List of elements for 2.5L Turbo, Engine Performance Wiring Diagram (4 of 5) for Subaru Legacy i 2009:

• (front of engine) leak diagnosis connector
• (front of left cylinder head) left oil flow control solenoid valve
• (front of right cylinder head) right oil flow control solenoid valve
• (left side of engine) ignition coil 2
• (left side of engine) ignition coil 4
• (right side of engine) ignition coil 1
• (right side of engine) ignition coil 3
• Crankshaft position sensor (front of engine)
• Ge-1 (top left of engine)
• Knock sensor (top rear of engine)
• Left camshaft position sensor (left rear of engine)
• Manifold absolute pressure sensor (right rear of engine)
• Nca
• Purge control solenoid valve 1 (on front of engine)
• Red
• Right camshaft position sensor (right rear of engine)

2.5L Turbo, Engine Performance Wiring Diagram (5 of 5) for Subaru Legacy i 2009

List of elements for 2.5L Turbo, Engine Performance Wiring Diagram (5 of 5) for Subaru Legacy i 2009:

• (on top left of engine) ge-1
• (top left of engine) ge-1
• (top of left cylinder head) fuel injector 2
• (top of left cylinder head) fuel injector 4
• (top of right cylinder head) fuel injector 1
• (top of right cylinder head) fuel injector 3
• B134
• B137
• Electronic throttle control (right rear of engine)
• Engine control module (ecm) (right side of dash)
• Engine coolant temperature sensor (top front of engine)
• Ge-1 (top left of engine)
• Left tumble generator valve assembly (left rear of engine)
• Nca
• Pnk
• Power steering oil pressure switch (on power steering oil pump)
• Red
• Right secondary air combination valve
• Right tumble generator valve assembly (right rear of engine)

3.0L

3.0L, Engine Performance Wiring Diagram (1 of 5) for Subaru Legacy i 2009

List of elements for 3.0L, Engine Performance Wiring Diagram (1 of 5) for Subaru Legacy i 2009:

• (right kick panel) joint connector b122
• (right side of dash)
• Accelerator pedal position sensor (left side of dash)
• Air conditioning system
• Anti-theft system
• B135
• B136
• B52
• Computer data lines system
• Cooling fans system
• Cruise control system
• Electronic throttle control relay
• Engine control module (ecm)
• Fuel tank pressure sensor (behind rear bumper)
• Fuse & relay box (f/b) (left kick panel)
• Fuse 15a
• Hot w/ ig2 relay energized
• Joint connector b83 (right kick panel)
• Mass air flow meter & intake air temperature sensor (front of engine)
• Nca
• Pnk
• Red
• Remote engine start control module (fuse & relay box (f/b))
• Starting/charging system

3.0L, Engine Performance Wiring Diagram (2 of 5) for Subaru Legacy i 2009

List of elements for 3.0L, Engine Performance Wiring Diagram (2 of 5) for Subaru Legacy i 2009:

• (right kick panel) main relay
• (right kick panel) main relay 2
• B145
• B186
• Can transceiver & receiver
• Combination meter
• Computer data lines system
• Drive circuit
• Engine coolant temperature gauge
• Fuel pump assembly (in fuel tank)
• Fuel pump control unit (sedan) fuel pump control module (wagon) (wagon: left side of luggage compt) (sedan: left side of trunk)
• Fuel pump relay
• Fuel temp sensor
• Fuse 15a
• Fuse 7.5a
• Fuse sbf-5 30a
• Fuse sbf-7 30a
• Gb-3
• Gb-5 (right side of dash)
• Gb-9 (sedan: top center of trunk) (wagon: left "d" pillar)
• Hot at all times
• I/f
• I10
• Main fuse box (m/b) (left side of engine compt)
• Malfunction ind light
• Micro computer
• Nca
• Oil pressure
• Oil pressure switch (right front of of engine)
• Pnk
• Power circuit
• Red
• S# prohibition ind
• Speedo- meter
• Tacho- meter
• Warning ind

3.0L, Engine Performance Wiring Diagram (3 of 5) for Subaru Legacy i 2009

List of elements for 3.0L, Engine Performance Wiring Diagram (3 of 5) for Subaru Legacy i 2009:

• (center rear of fuel tank) pressure control solenoid valve
• B52
• Drain valve
• Fuse & relay box (f/b) (left kick panel)
• Fuse 15a
• Hot at all times
• Hot in on or start
• Joint connector b138
• Left front oxygen (a/f) sensor (top of left cylinder head)
• Left rear oxygen sensor (rear catalytic converter)
• Nca
• R168
• Red
• Right front oxygen (a/f) sensor (rear of engine)
• Right rear oxygen sensor (rear of engine compt)

3.0L, Engine Performance Wiring Diagram (4 of 5) for Subaru Legacy i 2009

List of elements for 3.0L, Engine Performance Wiring Diagram (4 of 5) for Subaru Legacy i 2009:

• (left rear of engine) left oil flow control solenoid valve
• (right rear of engine) right oil flow control solenoid valve
• (top left of engine) ignition coils 2, 4 & 6
• (top right of engine) ignition coils 1, 3 & 5
• Crankshaft position sensor (rear of engine)
• Ge (right rear of engine)
• Knock sensor 1 (right center of engine)
• Knock sensor 2 (left center of engine)
• Left camshaft position sensor (left rear of engine)
• Left oil switching solenoid valve (left rear of engine)
• Nca
• Purge control solenoid valve (right side of engine)
• Red
• Right camshaft position sensor (right rear of engine)
• Right oil switching solenoid valve (right rear of engine)

3.0L, Engine Performance Wiring Diagram (5 of 5) for Subaru Legacy i 2009

List of elements for 3.0L, Engine Performance Wiring Diagram (5 of 5) for Subaru Legacy i 2009:

• (right rear of engine) ge
• (right side of dash)
• (top of left cylinder head) fuel injector 2, 4 & 6
• (top of right cylinder head) fuel injector 1, 3 & 5
• B134
• B137
• Egr valve (left rear of engine)
• Electronic throttle control (right rear of engine)
• Engine control module (ecm)
• Engine coolant temperature sensor & thermometer (left front of engine)
• Ge (right rear of engine)
• Left vvl diagnosis oil pressure switch (left rear of engine)
• Manifold absolute pressure sensor (right rear of engine)
• Nca
• Oil temperature sensor (rear of left cylinder head)
• Pnk
• Power steering oil pressure switch (on power steering oil pump)
• Red
• Right vvl diagnosis oil pressure switch (right rear of engine)