ENGINE PERFORMANCE – Subaru Legacy L 2003 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

2.5L

2.5L, Engine Performance Wiring Diagram (1 of 3) for Subaru Legacy L 2003

List of elements for 2.5L, Engine Performance Wiring Diagram (1 of 3) for Subaru Legacy L 2003:

• (behind left side of dash) interrupt relay
• (on left side of engine) egr solenoid valve
• (right kick panel) main relay
• A/c system
• A/t
• Acc
• B135
• B136
• Camshaft position sensor (on left camshaft support)
• Crankshaft position sensor (front of eng, on oil pump)
• Day time running light control module & starter motor
• Engine control module (behind right side of dash)
• Gb-3 (rear of engine compt)
• Ge (right rear of eng)
• Hot at all times
• Ignition switch
• Inhibitor switch (right side of transmission case)
• Knock sensor (top rear of eng)
• M/t
• Nca
• Neutral position switch (on transfer case)
• Off
• Pnk
• Power steering oil pressure switch (on power steering oil pump)
• Red
• Shielded
• Short connector
• Start
• Starter interlock relay (behind left side of dash)
• Starting system
• Starting/ charging system
• W/ anti-theft
• W/o anti-theft (w/ security conn)
• W/o anti-theft (w/o security conn)

2.5L, Engine Performance Wiring Diagram (2 of 3) for Subaru Legacy L 2003

List of elements for 2.5L, Engine Performance Wiring Diagram (2 of 3) for Subaru Legacy L 2003:

• (at center of dash) check connector
• (at center of dash) data link connector
• (on fuel tank) fuel tank pressure sensor
• (or red)
• (right rear of eng) ge
• (right side of dash) shielded & sensor ground joint connector
• (under right front seat) gb-8
• A/t
• B152
• B158
• Engine coolant temperature sensor & thermometer (top front or eng, on water pipe)
• Front oxygen sensor (a/f) (front of catalytic converter)
• Fuel gauge sub module (on top of fuel tank)
• Fuel level sensor
• Fuel pump assembly (on top of fuel tank)
• Fuel pump condenser (sedan)
• Fuel pump relay (behind left side of dash)
• Fuel sub level sensor
• Fuel temp sensor
• Fuse & relay box (behind left side of dash)
• Fuse 15a
• Ge (right rear of eng)
• Hot at all times
• Hot in on or start
• Instru- ment cluster system
• Intake air temp- erature sensor (on air cleaner case)
• Line end check connector
• M/t
• Nca
• Pnk
• Pressure sensor (top rear of engine)
• Rear oxygen sensor (rear of catalytic converter)
• Red
• Shielded
• Throttle position sensor (on throttle body)
• Vehicle speed sensor (m/t) (right side of transmission)

2.5L, Engine Performance Wiring Diagram (3 of 3) for Subaru Legacy L 2003

List of elements for 2.5L, Engine Performance Wiring Diagram (3 of 3) for Subaru Legacy L 2003:

• (center rear of fuel tank) pressure control solenoid valve
• (in relay block) ignition relay
• (on intake manifold) air assist injector solenoid valve
• (on intake manifold) purge control solenoid valve
• (rear center of vehicle) internal pressure solenoid valve
• (right rear corner of vehicle) atmospheric pressure solenoid
• A/c system
• B134
• B137
• B152
• B54
• B55
• B56
• Combination meter
• Cooling fans system
• Custom cpu
• Defogger system
• Engine control module (behind right side of dash)
• Exterior lights system
• F37
• F68
• Fuel injectors
• Fuse & relay box (behind left side of dash)
• Fuse 15a
• Fuse sbf-5 30a
• Gb-3 (rear of engine compt)
• Ge (right rear of eng)
• Hot at all times
• I/f
• I10
• I11
• I12
• I15
• Idle air control solenoid valve (on throttle body)
• Ignition coil & ignitor (top front of eng)
• Main fuse box
• Mal- function indicator lamp
• Op connector (behind center of dash)
• Pnk
• Shielded
• Speedo- meter circuit
• Tacho- meter
• Test mode connector (behind center of dash)
• Transmission control module (behind left side of dash)
• W/ sports shift
• W/o sports shift