ENGINE PERFORMANCE – Subaru Legacy R 2010 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

2.5L

2.5L, Engine Performance Wiring Diagram (1 of 4) for Subaru Legacy R 2010

List of elements for 2.5L, Engine Performance Wiring Diagram (1 of 4) for Subaru Legacy R 2010:

• (rear of engine) electronic throttle control
• (right rear of engine) egr valve
• (right rear of engine) ge
• (top of left cylinder head) fuel injector 2
• (top of right cylinder head) fuel injector 1
• Accelerator pedal position sensor (left side of dash)
• Air conditioning system
• B134
• B135
• B280
• Body integrated unit (center of dash)
• Clutch switch (m/t) (left side of dash)
• Computer data lines system
• Ecm (right side of dash)
• Ge (right rear of engine)
• Ignition coil 1 (right side of engine)
• Ignition coil 2 (left side of engine)
• Ignition coil 3 (right side of engine)
• Ignition coil 4 (left side of engine)
• Nca
• Pnk
• Red
• Starting/ charging system

2.5L, Engine Performance Wiring Diagram (2 of 4) for Subaru Legacy R 2010

List of elements for 2.5L, Engine Performance Wiring Diagram (2 of 4) for Subaru Legacy R 2010:

• & receiver transceiver can
• (left rear of engine) left oil switching solenoid valve
• (right kick panel) j/c b83
• (right rear of engine) right oil switching solenoid valve
• (top of left cylinder head) fuel injector 4
• (top of right cylinder head) fuel injector 3
• Combination meter
• Computer data lines system
• Coolant engine
• Coolant temperature warning light ind
• Drain valve (sedan: left side of luggage compartment wagon: left quarterpanel)
• Driver circuit
• Eco gauge
• Engine
• Fuse & relay box (f/b) (left kick panel)
• Fuse 5 7.5a
• Fuse 7 7.5a
• Gb-5 (right kick panel)
• Hot at all times
• Hot in on or start
• I/f
• I152
• Indicator light malfunction
• J/c b138 (right kick panel)
• J/c i82 (left end of dash)
• J/c i98 (right side of dash)
• Light ind oil warning low engine
• Light ind warning oil pressure
• Micro computer
• Nca
• Oil pressure switch (front center of engine)
• Power distribution system
• Red
• Tacho- meter
• Temperature ind
• Temperature) engine oil (high buzzer

2.5L, Engine Performance Wiring Diagram (3 of 4) for Subaru Legacy R 2010

List of elements for 2.5L, Engine Performance Wiring Diagram (3 of 4) for Subaru Legacy R 2010:

• (in relay holder) fuel pump relay
• A/f, o2 oxygen sensor relay (in relay holder)
• B158
• B52
• Delivery (test) mode fuse 36
• Electronic throttle control relay (in relay holder)
• Energized
• Fuse & relay box (f/b) (left kick panel)
• Fuse 12 15a
• Fuse 12 7.5a
• Fuse 13 15a
• Fuse 14 15a
• Fuse 15 15a
• Fuse 16 15a
• Fuse 20 20a
• Fuse 4 7.5a
• Fuse 8 15a
• Ge (right rear of engine)
• Hot at all times
• Hot in on
• Hot w/ ig2 relay
• Ig relay (in relay holder)
• J/c b512
• Knock sensor (top left rear of engine)
• Main fuse box (m/b)
• Main relay (in relay holder)
• Nca
• Or start
• Pnk
• Red
• Stop light & brake switch (left side of dash)

2.5L, Engine Performance Wiring Diagram (4 of 4) for Subaru Legacy R 2010

List of elements for 2.5L, Engine Performance Wiring Diagram (4 of 4) for Subaru Legacy R 2010:

• (in fuel tank) fuel pump assembly
• (right front of engine) front oxygen (a/f) sensor
• (right front of engine) rear oxygen sensor
• (right kick panel) j/c b503
• (right side of engine compt) mass air flow & intake air temperature sensor
• (sedan: right side of luggage compt wagon: right quarterpanel) fuel tank pressure sensor
• B136
• B137
• Camshaft position sensor (left front of engine)
• Computer data lines system
• Crankshaft position sensor (front of engine)
• Cruise control system
• Ecm (right side of dash)
• Engine coolant temperature sensor (top front of engine)
• Fuel pump
• Fuel temperature sensor
• Gb-8 (base of right "b" pillar)
• Ge (right rear of engine)
• Left variable valve lift diagnosis oil pressure switch (front of left cylinder head)
• Manifold absolute pressure sensor (right rear of engine)
• Nca
• Oil level switch (rear of left cylinder head)
• Oil temperature sensor (rear of right cylinder head)
• Pnk
• Power steering oil pressure switch (on power steering oil pump)
• Purge control solenoid valve (left side of engine)
• Red
• Right variable valve lift diagnosis oil pressure switch (rear of right cylinder head)
• Starting/ charging system
• Starting/charging system computer data lines system

2.5L TURBO

2.5L Turbo, Engine Performance Wiring Diagram (1 of 5) for Subaru Legacy R 2010

List of elements for 2.5L Turbo, Engine Performance Wiring Diagram (1 of 5) for Subaru Legacy R 2010:

• (left side of engine) left exhaust oil flow control solenoid valve
• (rear of engine) electronic throttle control
• (rear of right cylinder head) right intake oil flow control solenoid valve
• (right side of engine) right exhaust oil flow control solenoid valve
• (top of right cylinder head) fuel injector 1
• Accelerator pedal position sensor (left side of dash)
• Air conditioning system
• B134
• B135
• B280
• Body integrated unit (center of dash)
• Computer data lines system
• Ecm (right side of dash)
• Ge (left rear of engine)
• Ignition coil 1 (right side of engine)
• Ignition coil 2 (left side of engine)
• Ignition coil 3 (right side of engine)
• Ignition coil 4 (left side of engine)
• J/c b83 (right kick panel)
• Nca
• Pnk
• Red
• Starting/ charging system

2.5L Turbo, Engine Performance Wiring Diagram (2 of 5) for Subaru Legacy R 2010

List of elements for 2.5L Turbo, Engine Performance Wiring Diagram (2 of 5) for Subaru Legacy R 2010:

• & receiver transceiver can
• (rear of left cylinder head) left intake oil flow control solenoid valve
• (right front of engine) wastegate control solenoid valve
• (top of left cylinder head) fuel injector 2
• (top of left cylinder head) fuel injector 4
• (top of right cylinder head) fuel injector 3
• Clutch switch (left side of dash)
• Combination meter
• Computer data lines system
• Coolant temperature ind
• Coolant temperature warning light ind
• Drain valve (sedan: left side of luggage compt wagon: left quarterpanel)
• Driver circuit
• Eco gauge
• Engine
• Fuse & relay box (f/b) (left kick panel)
• Fuse 5 7.5a
• Fuse 7 7.5a
• Gb-5 (right kick panel)
• Hot at all times
• Hot in on or start
• I/f
• I152
• Indicator light malfunction
• J/c i82 (left end of dash)
• J/c i98 (right side of dash)
• Light ind oil warning low engine
• Light ind warning oil pressure
• Micro computer
• Nca
• Oil pressure switch (upper front center of engine)
• Oil temp) (high eng buzzer
• Power distribution system
• Red
• Tacho- meter

2.5L Turbo, Engine Performance Wiring Diagram (3 of 5) for Subaru Legacy R 2010

List of elements for 2.5L Turbo, Engine Performance Wiring Diagram (3 of 5) for Subaru Legacy R 2010:

• A/f, o2 oxygen sensor relay (in relay holder)
• B158
• B52
• Delivery (test) mode fuse 36
• Electronic throttle control relay (in relay holder)
• Energized
• Fuse & relay box (f/b) (left kick panel)
• Fuse 12 15a
• Fuse 12 7.5a
• Fuse 13 15a
• Fuse 15 15a
• Fuse 16 15a
• Fuse 20 20a
• Fuse 4 7.5a
• Fuse 8 15a
• Hot at all times
• Hot in on or start
• Hot w/ ig2 relay
• J/c b512 (top center of dash)
• Main fuse box (m/b)
• Main relay (in relay holder)
• Nca
• Pnk
• Pressure control solenoid valve (center rear of fuel tank)
• Red
• Stop light & brake switch (left side of dash)

2.5L Turbo, Engine Performance Wiring Diagram (4 of 5) for Subaru Legacy R 2010

List of elements for 2.5L Turbo, Engine Performance Wiring Diagram (4 of 5) for Subaru Legacy R 2010:

• (in fuel tank) fuel pump assembly
• (in relay holder) fuel pump relay
• (right kick panel) j/c b138
• (sedan: right side of luggage compt wagon: right quarterpanel) fuel tank pressure sensor
• (wagon: right quarterpanel sedan: right side of luggage compt) fuel pump control unit
• Fuel pump
• Fuel temperature
• Gb-7 (sedan: center front of luggage compt wagon: right quarterpanel)
• Ge (left rear of engine)
• J/c b479 (left front of engine compt)
• Knock sensor (top rear of engine)
• Left intake camshaft position sensor (left rear of engine)
• Left tumble generator valve assembly (left rear of engine)
• Nca
• Oil level switch (left rear of engine)
• Pnk
• Purge control solenoid valve 1 (top front of engine)
• Purge control solenoid valve 2 (right rear of engine)
• Red
• Right tumble generator valve assembly (right rear of engine)
• Sensor

2.5L Turbo, Engine Performance Wiring Diagram (5 of 5) for Subaru Legacy R 2010

List of elements for 2.5L Turbo, Engine Performance Wiring Diagram (5 of 5) for Subaru Legacy R 2010:

• (left rear of engine) ge
• (left side of engine) front oxygen (a/f) sensor
• (left side of engine) rear oxygen sensor
• (right kick panel) j/c b503
• (right side of engine compt) mass air flow & intake air temperature sensor
• B136
• B137
• Computer data lines system
• Crankshaft position sensor (front of engine)
• Cruise control system
• Ecm (right side of dash)
• Engine coolant temperature sensor (top of engine)
• Ge (left rear of engine)
• Left exhaust camshaft position sensor (left side of engine)
• Manifold absolute pressure sensor (right rear of engine)
• Nca
• Neutral position switch
• Pnk
• Power steering oil pressure switch (on power steering oil pump)
• Red
• Right exhaust camshaft position sensor (right side of engine)
• Right intake camshaft position sensor (right rear of engine)
• Starting/charging system

3.6L

3.6L, Engine Performance Wiring Diagram (1 of 5) for Subaru Legacy R 2010

List of elements for 3.6L, Engine Performance Wiring Diagram (1 of 5) for Subaru Legacy R 2010:

• (in relay holder) electronic throttle control
• (top of left cylinder head) fuel injector 2
• (top of left cylinder head) fuel injector 4
• (top of left cylinder head) fuel injector 6
• (top of right cylinder head) fuel injector 1
• (top of right cylinder head) fuel injector 3
• (top of right cylinder head) fuel injector 5
• Accelerator pedal position sensor (left side of dash)
• Air conditioning system
• B134
• B135
• B280
• Body integrated unit (center of dash)
• Computer data lines system
• Ecm (right side of dash)
• Ge (left rear of engine)
• Ignition coil 1 (right side of engine)
• Ignition coil 2 (left side of engine)
• Ignition coil 3 (right side of engine)
• Ignition coil 4 (left side of engine)
• Ignition coil 5 (right side of engine)
• Ignition coil 6 (left side of engine)
• Nca
• Pnk
• Red
• Starting/ charging system

3.6L, Engine Performance Wiring Diagram (2 of 5) for Subaru Legacy R 2010

List of elements for 3.6L, Engine Performance Wiring Diagram (2 of 5) for Subaru Legacy R 2010:

• & receiver transceiver can
• (front of left cylinder head) left exhaust oil flow control solenoid valve
• (front of left cylinder head) left intake oil flow control solenoid valve
• (front of right cylinder head)
• (front of right cylinder head) right intake oil flow control solenoid valve
• (rear of engine) egr valve
• (right rear of engine) manifold absolute pressure sensor
• Combination meter
• Computer data lines system
• Coolant engine
• Drain valve (sedan: left side of luggage compt wagon: left quarterpanel)
• Driver circuit
• Eco gauge
• Engine coolant temperature
• Fuse & relay box (f/b) (left kick panel)
• Fuse 5 7.5a
• Fuse 7 7.5a
• Gb-5 (right kick panel)
• Hot at all times
• Hot in on or start
• I/f
• I152
• Ind
• Indicator light malfunction
• J/c i82 (left end of dash)
• J/c i98 (right side of dash)
• Light ind oil warning low engine
• Light ind warning oil pressure
• Micro computer
• Nca
• Oil pressure switch (right front of engine)
• Power distribution system
• Red
• Right exhaust oil flow control solenoid valve
• Tacho- meter
• Temperature warning light ind
• Temperature) engine oil buzzer (high

3.6L, Engine Performance Wiring Diagram (3 of 5) for Subaru Legacy R 2010

List of elements for 3.6L, Engine Performance Wiring Diagram (3 of 5) for Subaru Legacy R 2010:

• (right kick panel) j/c b138
• A/f, o2 oxygen (in relay holder)
• B158
• B52
• Delivery (test) mode fuse 36
• Electronic throttle control relay (in relay holder)
• Energized
• Fuse & relay box (f/b) (left kick panel)
• Fuse 12 15a
• Fuse 12 7.5a
• Fuse 13 15a
• Fuse 14 15a
• Fuse 15 15a
• Fuse 16 15a
• Fuse 20 20a
• Fuse 4 7.5a
• Fuse 8 15a
• Hot at all times
• Hot in on or start
• Hot w/ ig2 relay
• Ig relay (in relay holder)
• J/c b512 (top center of dash)
• Main fuse box (m/b)
• Main relay (in relay holder)
• Nca
• Pnk
• Purge control solenoid valve (right rear of engine)
• Red
• Stop light & brake switch (left side of dash)

3.6L, Engine Performance Wiring Diagram (4 of 5) for Subaru Legacy R 2010

List of elements for 3.6L, Engine Performance Wiring Diagram (4 of 5) for Subaru Legacy R 2010:

• (downstream of catalytic converter)
• (downstream of catalytic converter) left rear oxygen sensor
• (in fuel tank) fuel pump assembly
• (in relay holder) fuel pump relay
• (left cylinder head exhaust)
• (sedan: right side of luggage compartment wagon: right quarterpanel) fuel tank pressure sensor
• (sedan: right side of luggage compt wagon: right quarterpanel) fuel pump control unit
• Fuel pump
• Fuel temp sensor
• Gb-7 (sedan: center front of luggage compt wagon: right quarterpanel)
• Ge (left rear of engine)
• J/c b479 (left front of engine compartment)
• J/c b83 (right kick panel)
• Knock sensor 1 (right center of engine)
• Knock sensor 2 (left center of engine)
• Left exhaust camshaft position sensor (front of left cylinder head)
• Left front oxygen (a/f) sensor
• Nca
• Pnk
• Red
• Right exhaust camshaft position sensor (front of right cylinder head)
• Right intake camshaft position sensor (right rear of engine)
• Right rear oxygen sensor

3.6L, Engine Performance Wiring Diagram (5 of 5) for Subaru Legacy R 2010

List of elements for 3.6L, Engine Performance Wiring Diagram (5 of 5) for Subaru Legacy R 2010:

• (right cylinder head exhaust) right front oxygen (a/f) sensor
• (right kick panel) j/c b503
• (right side of engine compt) mass air flow & intake air temperature sensor
• B136
• B137
• Computer data lines system
• Crankshaft position sensor (rear of engine)
• Cruise control system
• Ecm (right side of dash)
• Engine coolant temperature sensor (left front of engine)
• Ge (left rear of engine)
• Left intake camshaft position sensor (left rear of engine)
• Nca
• Oil level switch (lower left side of engine)
• Oil temperature sensor (left cylinder head)
• Pnk
• Power steering oil pressure switch (on power steering oil pump)
• Red
• Starting/charging system