Diagram sections — 28 (72 total)
AIR CONDITIONING ANTI-LOCK BRAKES ANTI-THEFT BODY CONTROL MODULES COMPUTER DATA LINES COOLING FAN CRUISE CONTROL DEFOGGERS ENGINE PERFORMANCE EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS POWER DISTRIBUTION POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER TOP/SUNROOF POWER WINDOWS RADIO SHIFT INTERLOCK STARTING/CHARGING SUPPLEMENTAL RESTRAINTS TRANSMISSION WARNING SYSTEMS WIPER/WASHER
AIR CONDITIONING
2.0L TURBO 2.0L Turbo, Automatic A/C Wiring Diagram (1 of 2) for Subaru Impreza WRX STi 2005 List of elements for 2.0L Turbo, Automatic A/C Wiring Diagram (1 of 2) for Subaru Impreza WRX STi 2005: 31 (behind right side of dash) fresh/recirc actuator A/c pressure switch (on left side of engine compt) Air mix actuator (behind right side of dash) Auto a/c control module (below center of dash) B152 B271 B282 B283 B52 Blower motor (behind right side of dash) Blower motor relay (behind left side of dash) Cruise control system Defogger system F41 Fan control amplifier (behind right side of dash) Fuse & relay box (f/b) (behind left side of dash) Fuse 1 15a Fuse 17 15a Fuse 18 15a Fuse 2 15a Fuse 9 15a Gb-4 (behind right side of dash) Gb-5 (behind center of dash) Gb-6 (under left front of center console) Hot at all times Hot in on or acc Hot in on or start Interior lights system Mode actuator (behind right side of dash) Red Thermometer 2.0L Turbo, Automatic A/C Wiring Diagram (2 of 2) for Subaru Impreza WRX STi 2005 List of elements for 2.0L Turbo, Automatic A/C Wiring Diagram (2 of 2) for Subaru Impreza WRX STi 2005: 35 2.0l turbo 2.5l turbo A/c compressor (at left front of engine) Air conditioning relay Air conditioning relay holder (at left side of engine compt) Ambient sensor (behind center of grille) B134 B135 B136 B137 B84 Combination meter Engine control module (behind right side of dash) Engine control system Engine coolant temperature sensor & thermometer (2.5l turbo: on top left front of engine) (2.0l turbo: on top center of engine) Evaporation thermo switch (behind right side of dash) F68 Fuse 2 15a Fuse 20a Gb-1 (right side of engine compt) Hot at all times I10 I12 Joint connector (shield & sensor ground) (behind right side of dash) Magnet clutch Main fan motor (behind left side of radiator) Main fan relay 1 Main fan relay 2 Main fuse box (on left side of engine compt) Nca Red Sub fan motor (behind right side of radiator) Sub fan relay 1 Sub fan relay 2 Sunload sensor (at top right side of dash) 2.0L Turbo, Manual A/C Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for 2.0L Turbo, Manual A/C Wiring Diagram for Subaru Impreza WRX STi 2005: 42 A/c compressor (at left front of engine) A/c pressure switch (on left side of engine compt) Air conditioning relay Air conditioning relay holder (at left side of engine compt) Air conditioning switch B135 B137 B152 B52 B84 Blower fan motor (behind right side of dash) Blower fan motor relay (behind left side of dash) Blower fan resistor (behind right side of dash) Blower fan switch Combination meter Engine control module (behind right side of dash) Engine controls system Engine coolant temperature sensor & thermometer (on top center of engine) Evaporation thermoswitch (behind right side of dash) F41 Fuse & relay box (f/b) (behind left side of dash) Fuse 1 15a Fuse 17 15a Fuse 18 15a Fuse 2 15a Fuse 20a Gb-1 (right side of engine compt) Gb-6 (under left front of center console) Hot at all times Hot in on or start I12 Illum Interior lights system Joint connector (shield & sensor ground) (behind right side of dash) Magnetic clutch Main fan motor (behind left side of radiator) Main fan relay-1 Main fan relay-2 Nca Sub fan motor (behind right side of radiator) Sub fan relay-1 Sub fan relay-2
2.5L 2.5L, Manual A/C Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for 2.5L, Manual A/C Wiring Diagram for Subaru Impreza WRX STi 2005: 39 (on left side of engine compt) a/c pressure switch A/c compressor (at left front of engine) Air conditioning relay Air conditioning relay holder (at left side of engine compt) Air conditioning switch B134 B135 B136 B137 B152 B52 Blower fan motor (behind right side of dash) Blower fan motor relay (behind left side of dash) Blower fan resistor (behind right side of dash) Blower fan switch Combination meter Engine control module (behind right side of dash) Engine controls system Engine coolant temperature sensor & thermometer (on top left front of engine) Evaporation thermoswitch (behind right side of dash) F41 Fuse & relay box (f/b) (behind left side of dash) Fuse 1 15a Fuse 17 15a Fuse 18 15a Fuse 2 15a Fuse 20a Gb-1 (right side of engine compt) Gb-6 (under left front of center console) Hot at all times Hot in on or start I12 Illum Interior lights system Magnet clutch Main fan motor (behind left side of radiator) Main fan relay Sub fan motor (behind right side of radiator) Sub-fan relay
2.5L TURBO 2.5L Turbo, Automatic A/C Wiring Diagram (1 of 2) for Subaru Impreza WRX STi 2005 List of elements for 2.5L Turbo, Automatic A/C Wiring Diagram (1 of 2) for Subaru Impreza WRX STi 2005: 31 (behind right side of dash) fresh/recirc actuator A/c pressure switch (on left side of engine compt) Air mix actuator (behind right side of dash) Auto a/c control module (below center of dash) B152 B271 B282 B283 B52 Blower motor (behind right side of dash) Blower motor relay (behind left side of dash) Cruise control system Defogger system F41 Fan control amplifier (behind right side of dash) Fuse & relay box (f/b) (behind left side of dash) Fuse 1 15a Fuse 17 15a Fuse 18 15a Fuse 2 15a Fuse 9 15a Gb-4 (behind right side of dash) Gb-5 (behind center of dash) Gb-6 (under left front of center console) Hot at all times Hot in on or acc Hot in on or start Interior lights system Mode actuator (behind right side of dash) Red Thermometer 2.5L Turbo, Automatic A/C Wiring Diagram (2 of 2) for Subaru Impreza WRX STi 2005 List of elements for 2.5L Turbo, Automatic A/C Wiring Diagram (2 of 2) for Subaru Impreza WRX STi 2005: 35 2.0l turbo 2.5l turbo A/c compressor (at left front of engine) Air conditioning relay Air conditioning relay holder (at left side of engine compt) Ambient sensor (behind center of grille) B134 B135 B136 B137 B84 Combination meter Engine control module (behind right side of dash) Engine control system Engine coolant temperature sensor & thermometer (2.5l turbo: on top left front of engine) (2.0l turbo: on top center of engine) Evaporation thermo switch (behind right side of dash) F68 Fuse 2 15a Fuse 20a Gb-1 (right side of engine compt) Hot at all times I10 I12 Joint connector (shield & sensor ground) (behind right side of dash) Magnet clutch Main fan motor (behind left side of radiator) Main fan relay 1 Main fan relay 2 Main fuse box (on left side of engine compt) Nca Red Sub fan motor (behind right side of radiator) Sub fan relay 1 Sub fan relay 2 Sunload sensor (at top right side of dash)
ANTI-LOCK BRAKES Anti-lock Brakes Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for Anti-lock Brakes Wiring Diagram for Subaru Impreza WRX STi 2005: 66 assembly) (2.5l turbo) parking brake warn light ind (2.5l) (at base of right "a" pillar) abs condenser (behind center of dash) (behind left side of dash) (on bracket, above brake pedal) stop & brake switch 10a 2.5l turbo Abs control module (on right side of engine compt) Abs relay (behind left side of dash) Abs warning light ind Abs ``g" sensor (under rear of center console) B158 B302 abs motor gnd (at right front of engine compartment) B380 B52 Check connector Circuit reverse Combination meter Data link connector (behind dash, Diagnosis terminal Driver`s control center differential control unit (2.5l turbo) Except 2.5l turbo F38 F41 Fl in Fl out Fr in Fr out Fuse & relay box (f/b) (behind left side of dash) Fuse 13 10a Fuse 16 20a Fuse 18 15a Fuse 8 20a Gb-3 Gb-4 (behind right side of dash) Gb-5 (behind center of dash) Ge-2 ge-1 (2.0l turbo) (top right side (top right of engine) Hot at all times Hot in on or start I10 I11 I12 Left front abs sensor (behind left front wheel hub/spindle Left of steering column) Left rear abs sensor (behind left rear wheel hub/spindle Main fuse box (m/b) (on left side of engine compartment) Motor relay Of engine) Parking brake warning light ind (except 2.5l turbo) Pump motor Red Relay holder Reverse circuit Right front abs sensor (behind right front wheel hub/spindle Right rear abs sensor (behind right rear wheel hub/spindle Rl in Rl out Rr in Rr out Sbf holder (on left side of engine compartment) Sbf-4 fuse 50a Sbf-8 fuse 30a Solenoid valve Valve relay
ANTI-THEFT Forced Entry Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for Forced Entry Wiring Diagram for Subaru Impreza WRX STi 2005: 40 (behind left end of dash) keyless entry control module (behind left side of dash) interrupt relay (wagon: under right taillight assembly) (sedan: near license plate light) gb-8 2.0l turbo 2.5l turbo Acc B52 Combination meter Diode (wagon) (behind right rear quarterpanel) F68 Fuse & relay box (f/b) (behind left side of dash) Fuse 18 15a Fuse 2 20a Gb-3 Gb-4 (behind right side of dash) Gb-7 (under right front seat) Horns system Hot at all times Hot in on or start I10 I11 Ignition switch Immobilizer control module (behind right side of dash) Ind light door Ind light security Left front door switch (at rear of left front door) Left rear door switch (at rear of left rear door) Lock Main fuse box (m/b) (on left side of engine compt) On off Pnk Rear gate latch switch (wagon) (at bottom center of rear gate) Right front door switch (at rear of right front door) Right rear door switch (forward of right rear wheelwell) Security control module (behind right side of dash) Security horn (at right rear corner of engine compt) Security horn relay (behind left side of dash) Start Starting/ charging system Trunk room light switch (sedan) (at rear center of trunk) Immobilizer Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for Immobilizer Wiring Diagram for Subaru Impreza WRX STi 2005: 35 (at rear of left front door) (at rear of left rear door) (at rear of right front door) (forward of right rear wheelwell) B137 B152 Combination meter Ecm (behind right side of dash) F37 F68 Fuse & relay box (f/b) (behind left side of dash) Fuse 11 15a Fuse 2 20a Fuse 5 30a Fuse 6 15a Gb-3 Gb-4 (behind right side of dash) Gb-7 (under right front seat) Hot at all times Hot in on or start I10 I11 Ignition starter & steering lock assembly Immobilizer antenna (behind right side of dash) Immobilizer control module (behind right side of dash) Indicator light immobilizer security/ Key warning switch Left front door switch Left rear door switch Light door warning Main fuse box (m/b) (on left side of engine compt) Red Right front door switch Right rear door switch Security control module (behind right side of dash)
BODY CONTROL MODULES Body Control Modules Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for Body Control Modules Wiring Diagram for Subaru Impreza WRX STi 2005: 27 Air conditioning & defogger systems All times B152 B271 B280 B281 B52 Defogger system Door locks system F40 F68 Fuse & relay box (f/b) (behind left side dash) Fuse 11 15a Fuse 2 20a Fuse 3 15a Fuse 4 20a Gb-5 (behind center of dash) Hot at Hot at all times Hot in acc or on Hot in on or start Integrated module (behind left side of dash) Interior lights system Main fuse box (m/b) (on left side of engine compt) Red Shift interlock system Warning system
COMPUTER DATA LINES
2.0L TURBO 2.0L Turbo, Computer Data Lines Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for 2.0L Turbo, Computer Data Lines Wiring Diagram for Subaru Impreza WRX STi 2005: 40 (behind left side of dash) (behind left side of dash) cruise control module (on left side of engine compartment) Ab3 Abs control module (on right side of engine compartment) Air bag control module (under front of center console) Air bag ind B125 B126 B134 B136 B137 B52 B56 B75 B76 Check connector (behind left side of dash) Combination meter Data link connector (behind dash, left of steering column) Diagnosis terminal Engine control module (behind right side of dash) F37 Fuel pump assembly (on top of fuel tank) Fuse & relay box (f/b) Fuse 18 15a Gb-5 (behind center of dash) Ge-1 (top right side of engine) Hot at all times Hot in on or start I10 Line end check connector (under left side of dash) Line end connector M/t Main fuse box (m/b) Neutral position switch (m/t) (on left side of transmission) Pvc diagnosis connector Sbf-5 fuse 30a Test mode connector Transmission control module (a/t) (behind left side of dash) Vehicle speed sensor (m/t) (on right side of transmission case)
2.5L 2.5L, Computer Data Lines Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for 2.5L, Computer Data Lines Wiring Diagram for Subaru Impreza WRX STi 2005: 38 (behind left side of engine) (on left side of engine compartment) (top left side of engine) Ab3 Abs control module (on right side of engine compartment) Air bag control module (under front of center console) Air bag ind i10 B125 B126 B137 B52 B56 B75 B76 Check connector (behind left side of dash) Combination meter Cruise control module (behind left side of dash) Data link connector (behind dash, left of steering column) Diagnosis terminal Engine control module (behind right side of dash) F37 Fuel pump assembly (on top of fuel tank) Fuse & relay box (f/b) Fuse 18 15a Gb-5 (behind center of dash) Ge-2 Hot at all times Hot in on or start Line end checker Main fuse box (m/b) Neutral position switch (m/t) (on left side of transmission) Range lock solenoid Red Sbf-5 fuse 30a Temp gauge i12 Test mode connector Transmission control module (a/t) (behind left side of dash) Vehicle speed sensor (m/t) (on right side of transmission case)
2.5L TURBO 2.5L Turbo, Computer Data Lines Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for 2.5L Turbo, Computer Data Lines Wiring Diagram for Subaru Impreza WRX STi 2005: 39 (behind left side of dash) (top left side of engine) Ab3 Air bag control module (under front of center console) Air bag ind B122 B125 B126 B137 B380 B52 B56 B75 B76 Check connector (behind left side of dash) Combination meter Data link connector (behind dash, left of steering column) Diagnosis terminal Driver's control center differential control module Engine control module (behind right side of dash) F37 Fuel pump assembly (on top of fuel tank) Fuse & relay box (f/b) Fuse 18 15a Gb-5 (behind center of dash) Ge-1 Hot at all times Hot in on or start I10 Line end check connector (under left side of dash) Line end connector Main fuse box (m/b) (on left side of engine compartment) Neutral position switch (m/t) (on left side of transmission) Pvc diagnosis connector (at right rear of engine) Sbf-5 fuse 30a Shield & sensor ground joint connector (behind right side of dash) Test mode connector Transmission control module (a/t) (behind left side of dash) Vehicle speed sensor (m/t) (on right side of transmission case)
COOLING FAN
2.0L TURBO 2.0L Turbo, Cooling Fan Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for 2.0L Turbo, Cooling Fan Wiring Diagram for Subaru Impreza WRX STi 2005: 30 (behind right side of radiator) 2.0l 2.5l turbo 2.0l turbo 2.5l turbo Air conditioning relay holder (at left side of engine compartment) B135 B136 B84 Combination meter Engine control module (behind right side of dash) Engine controls system Engine coolant temperature sensor & thermometer (2.5l turbo: on top left front of engine) (2.0l turbo: on top center of engine) F41 Fuse & relay box (f/b) (behind left side of dash) Fuse 17 15a Fuse 18 15a Fuse 20a Gb-1 (right side of engine compartment) Hot at all times Hot in on or start I12 Joint connector (shield & sensor ground) (behind right side of dash) Main fan motor (behind left side of radiator) Main fan relay 1 Main fan relay 2 Nca Sub fan motor Sub-fan relay 1 Sub-fan relay 2 Turbo
2.5L 2.5L, Cooling Fan Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for 2.5L, Cooling Fan Wiring Diagram for Subaru Impreza WRX STi 2005: 22 (behind right side of radiator) Air conditioning relay holder (at left side of engine compt) B134 B135 B136 Combination meter Engine control module (behind right side of dash) Engine controls system Engine coolant temperature sensor & thermometer (on top left front of engine) F41 Fuse & relay box (f/b) (behind left side of dash) Fuse 17 15a Fuse 18 15a Fuse 20a Gb-1 (right side of engine compartment) Hot at all times Hot in on or start I12 Main fan motor (behind left side of radiator) Main fan relay Sub fan motor Sub-fan relay
2.5L TURBO 2.5L Turbo, Cooling Fan Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for 2.5L Turbo, Cooling Fan Wiring Diagram for Subaru Impreza WRX STi 2005: 30 (behind right side of radiator) 2.0l 2.5l turbo 2.0l turbo 2.5l turbo Air conditioning relay holder (at left side of engine compartment) B135 B136 B84 Combination meter Engine control module (behind right side of dash) Engine controls system Engine coolant temperature sensor & thermometer (2.5l turbo: on top left front of engine) (2.0l turbo: on top center of engine) F41 Fuse & relay box (f/b) (behind left side of dash) Fuse 17 15a Fuse 18 15a Fuse 20a Gb-1 (right side of engine compartment) Hot at all times Hot in on or start I12 Joint connector (shield & sensor ground) (behind right side of dash) Main fan motor (behind left side of radiator) Main fan relay 1 Main fan relay 2 Nca Sub fan motor Sub-fan relay 1 Sub-fan relay 2 Turbo
CRUISE CONTROL
2.0L TURBO 2.0L Turbo, Cruise Control Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for 2.0L Turbo, Cruise Control Wiring Diagram for Subaru Impreza WRX STi 2005: 51 (a/t) A/t Anti-theft system B158 B52 B55 B56 B68 Cancel Check connector (behind left side of dash) Clutch switch (on bracket, above clutch pedal) Combination meter Cruise control actuator (at right side of engine compt) Cruise control module (behind left side of dash) Cruise control switch Cruise indicator light Data link connector (behind dash, left of steering column) Dimmer circuit F37 Fuse & relay box (f/b) (behind left side of dash) Fuse 13 10a Fuse 16 20a Fuse 18 15a Fuse 6 15a Gb-4 (behind right side of dash) Ge-1 (top right side of engine) Horn relay Hot at all times Hot in on or start I10 I11 Indicator set Inhibitor switch (a/t) Interrupt relay (behind left side of dash) Light M/t Main Main fuse box (m/b) (on left side of engine compt) Nca P/n Resume Set Short connector St2 Starting/ charging system Steering roll connector Stoplight & brake switch (on bracket, above brake pedal) Transmission control module (a/t) (behind left side of dash) Vehicle speed sensor (m/t) (on right side of transmission case) W/ anti-theft system W/o anti-theft system
2.5L 2.5L, Cruise Control Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for 2.5L, Cruise Control Wiring Diagram for Subaru Impreza WRX STi 2005: 51 (on bracket, above brake pedal) stoplight & brake switch A/t B134 B135 B136 B137 B152 B158 B52 B56 B68 Cancel Clutch switch (m/t) (on bracket, above clutch pedal) Combination meter Cruise control switch Cruise indicator light Dimmer circuit Electric control throttle relay (behind right side of dash) Electronic throttle control (on top rear of engine) Engine control module (behind right side of dash) F37 Fuse & relay box (f/b) (behind left side of dash) Fuse 11 15a Fuse 13 10a Fuse 16 20a Fuse 18 15a Fuse 6 15a Ge-1 (top left side of engine) Ge-2 (top left side of engine) Horn relay Hot at all times Hot in on or acc Hot in on or start I10 I11 Joint connector c M/t Main Main fuse box (m/b) (on left side of engine compt) Main relay (behind right side of dash) Nca Pnk Red Resume Sbf-5 30a Set Set indicator light St2 Steering roll connector Transmission control module (behind left side of dash) Vehicle speed sensor (on right side of transmission case)
2.5L TURBO 2.5L Turbo, Cruise Control Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for 2.5L Turbo, Cruise Control Wiring Diagram for Subaru Impreza WRX STi 2005: 42 B134 B135 B136 B137 B158 B52 B68 Cancel Clutch switch (m/t) (on bracket, above clutch pedal) Combination meter Cruise control switch Cruise indicator light Electric control throttle relay (behind right side of dash) Electronic throttle control (on top rear of engine) Engine control module (behind right side of dash) Engine controls system F37 Fuse & relay box (f/b) (behind left side of dash) Fuse 13 10a Fuse 16 20a Fuse 18 15a Fuse 6 15a Ge-1 (top left side of engine) Horn relay Hot at all times Hot in on or start I10 I11 Joint connector Main Main fuse box (m/b) (on left side of engine compt) Main relay (behind right side of dash) Nca Red Resume Sbf-5 30a Set Set indicator light St2 Steering roll connector Stoplight & brake switch (on bracket, above brake pedal) Vehicle speed sensor (on right side of transmission case)
DEFOGGERS Rear Defogger Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for Rear Defogger Wiring Diagram for Subaru Impreza WRX STi 2005: 44 2.0l turbo Acc Auto a/c control module (if equipped) (below center of dash) B134 B137 B152 B158 B271 B280 B281 B282 Engine control module (behind right side of dash) Except 2.0l turbo F40 F68 Fuse & relay box (f/b) (behind left side of dash) Fuse 15a Fuse 20a Gb-5 (behind center of dash) Gb-6 (under left front of center console) Gb-8 (near license plate light) Gb-8 (under right tailgate assembly) Hot at all times Hot in on or start Ignition switch Integrated module (behind left side of dash) Interior lights system Left rearview mirror Lock Main fuse box (m/b) (on left side of engine compt) Mirror heater Mirror heater relay (behind left side of dash, in relay block) Nca On off Rear defogger (at lower right corner of rear gate) Rear defogger (under right side of rear parcel shelf) Rear defogger relay Rear defogger switch Red Right rearview mirror Sedan Start W/ choke coil Wagon Wiper Deicer Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for Wiper Deicer Wiring Diagram for Subaru Impreza WRX STi 2005: 16 (behind right end of dash) wiper deicer relay (behind right end of dash) wiper deicer timer B158 B52 Fuse & relay box (f/b) (behind left side of dash) Fuse 18 15a Fuse 19 20a Gb-3 Gb-4 (behind right side of dash) Hot at all times Hot in on or start Interior lights system Nca Off Wiper deicer (at top left of dash) Wiper deicer switch
ENGINE PERFORMANCE
2.0L TURBO 2.0L Turbo, Engine Performance Wiring Diagram (1 of 4) for Subaru Impreza WRX STi 2005 List of elements for 2.0L Turbo, Engine Performance Wiring Diagram (1 of 4) for Subaru Impreza WRX STi 2005: 33 (behind right side of dash) gb-4 (behind right side of dash) main relay (top right side of engine) ge-1 A/t Acc Air conditioning system B134 B135 B136 Camshaft position sensor (on left front of engine) Crankshaft position sensor (on lower front of engine) Defogger system Engine control module (behind right side of dash) Ge-1 (top right side of engine) Ge-2 (top left side of engine) Hot at all times Ignition switch Interior lights system Knock sensor (at center rear of engine) Left tumble generator valve (tgv) Lock M/t Mass airflow sensor (at right side of engine compt) Nca Neutral position switch (m/t) Off Power steering oil pressure switch (on front of engine) Red Right tumble generator valve (tgv) Shielded & sensor ground joint connector (behind right side of dash) Start Starting/ charging system Starting/charging system 2.0L Turbo, Engine Performance Wiring Diagram (2 of 4) for Subaru Impreza WRX STi 2005 List of elements for 2.0L Turbo, Engine Performance Wiring Diagram (2 of 4) for Subaru Impreza WRX STi 2005: 28 (behind left side of dash) check connector (top right side of engine) ge-1 A/t B125 B152 B52 B54 B55 B56 Engine coolant temperature sensor & thermometer (on top center of engine) Exhaust gas temperature sensor (in right exhaust system, near front oxygen sensor) F37 Fuse & relay box (behind left side of dash) Fuse 15a Fuse 30a Hot at all times Hot in on or start Left tumble generator valve (tgv) angle sensor Line end connector M/t Main fuse box (on left side of engine compt) Nca Pressure sensor (at top rear of engine) Red Right tumble generator valve (tgv) angle sensor Throttle position sensor (on throttle body assembly) Transmission control module (behind left side of dash) Vehicle speed sensor (m/t) (on right side of transmission case) 2.0L Turbo, Engine Performance Wiring Diagram (3 of 4) for Subaru Impreza WRX STi 2005 List of elements for 2.0L Turbo, Engine Performance Wiring Diagram (3 of 4) for Subaru Impreza WRX STi 2005: 36 (behind dash, left of steering column) data link connector (top right side of engine) (top right side of engine) ge-1 (under left side of dash) line end check connector B158 Combination meter Cpu Drain valve (under right rear of vehicle) Fuel level sensor Fuel pump Fuel pump assembly (on top of fuel tank) Fuel pump controller Fuel pump relay (behind right side of dash) Fuel sub level sensor (on top of fuel tank) Fuel tank pressure sensor (on top center of fuel tank) Fuel temperature sensor Fuse & relay box (behind left side of dash) Fuse 10a Gb-4 (behind right side of dash) Gb-7 (under right front seat) Ge-1 Hot in on or start I/f I10 I11 I12 Internal pressure solenoid valve Mal- function indicator light Oil pres- sure warning light Oil pressure switch (on front of engine) Pressure control solenoid valve (under center rear of vehicle) R58 Red Speedometer Tachometer Temp gauge 2.0L Turbo, Engine Performance Wiring Diagram (4 of 4) for Subaru Impreza WRX STi 2005 List of elements for 2.0L Turbo, Engine Performance Wiring Diagram (4 of 4) for Subaru Impreza WRX STi 2005: 25 (at left front of engine) fuel injector (at left rear of engine) fuel injector (at right front of engine) fuel injector (at right rear of engine) fuel injector (on top front of engine) (top right side of engine) ge-1 Air conditioning system B137 B84 Cooling fans system Engine control module (behind right side of dash) Front oxygen (a/f) sensor (on front of catalytic converter) Ge-1 (top right side of engine) Idle air control solenoid valve Ignition coil 1 Ignition coil 2 Ignition coil 3 Ignition coil 4 Nca Pcv diagnosis connector Pnk Purge control solenoid valve (on intake manifold) Rear oxygen sensor Red Wastegate solenoid (at right side of engine compt)
2.5L 2.5L, Engine Performance Wiring Diagram (1 of 4) for Subaru Impreza WRX STi 2005 List of elements for 2.5L, Engine Performance Wiring Diagram (1 of 4) for Subaru Impreza WRX STi 2005: 23 (behind right side of dash) electric control throttle relay (behind right side of dash) main relay (m/t) Air conditioning system B135 B137 Camshaft position sensor Crankshaft position sensor (on lower front of engine) Defogger system Engine control module (behind right side of dash) Fuse & relay box (f/b) (behind left side of dash) Fuse 15a b152 Fuse 15a b52 Ge-1 (top left side of engine) Ge-2 (top right of engine) Hot in on or start Interior lights system Nca Power steering oil pressure switch (at left front of engine) Red Shield & sensor ground joint connector (behind right side of dash) Starting/ charging system Transmissions system 2.5L, Engine Performance Wiring Diagram (2 of 4) for Subaru Impreza WRX STi 2005 List of elements for 2.5L, Engine Performance Wiring Diagram (2 of 4) for Subaru Impreza WRX STi 2005: 29 (behind dash, left of steering column) data link connector (behind left side of dash) check connector 15a A/f & o2 relay B125 B126 B75 B76 Diagnosis terminal Electric throttle control (on top rear of engine) Engine coolant temperature sensor & thermometer (on top left front of engine) F35 F37 Fuse 30a Gb-5 (behind center of dash) Ge-1 (top left side of engine) Hot at all times Ignition coil & ignitor Line end connector Main fuse box (m/b) (on left side of engine compt) Manifold pressure sensor Pnk Red Relay block Sbf 1 fuse 100a Sbf 5 fuse 30a Sbf holder (on left side of engine compt) Test mode connector Vehicle speed sensor (m/t) (on right side of transmission case) 2.5L, Engine Performance Wiring Diagram (3 of 4) for Subaru Impreza WRX STi 2005 List of elements for 2.5L, Engine Performance Wiring Diagram (3 of 4) for Subaru Impreza WRX STi 2005: 29 B158 Combination meter Custom cpu Fuel level sensor Fuel pump Fuel pump assembly (on top of fuel tank) Fuel pump relay (behind right side of dash) Fuel sub level sensor (on top of fuel tank) Fuel tank pressure sensor (on top center of fuel tank) Fuel temperature sensor Fuse & relay box (f/b) (behind left side of dash) Fuse 10a Gb-7 (under right front seat) Hot in on or start I/f I10 I11 I12 Internal pressure solenoid valve Mal- function indicator light Oil pressure switch (on front of engine) Oil pressure warning light Pressure control solenoid valve (under center rear of Red Speedometer Tachometer Temp gauge Vehicle) Vent control solenoid valve (under right rear of vehicle) 2.5L, Engine Performance Wiring Diagram (4 of 4) for Subaru Impreza WRX STi 2005 List of elements for 2.5L, Engine Performance Wiring Diagram (4 of 4) for Subaru Impreza WRX STi 2005: 25 (at left front of engine) fuel injector 2 (at left rear of engine) fuel injector 4 (at right front of engine) fuel injector 1 (at right rear of engine) fuel injector 3 (behind left side of dash) accelerator position sensor (on rear of engine) knock sensor (top left side of engine) ge-1 B134 B136 B55 B56 Cooling fans system Cpc solenoid Cruise control system Egr valve (at right rear of engine) Engine control module (behind right side of dash) Front oxygen (a/f) sensor (on front of front catalytic converter) Ge-1 (top left side of engine) Joint earth connector Mass air flow sensor Nca Pnk Rear oxygen sensor Red Transmission control module (behind left side of dash)
2.5L TURBO 2.5L Turbo, Engine Performance Wiring Diagram (1 of 4) for Subaru Impreza WRX STi 2005 List of elements for 2.5L Turbo, Engine Performance Wiring Diagram (1 of 4) for Subaru Impreza WRX STi 2005: 30 (behind right side of dash) electric throttle relay (behind right side of dash) main relay Air conditioning system B135 B137 B152 B271 B52 Cooling fans system Crankshaft position sensor (on lower front of engine) Defogger system Engine control module (behind right side of dash) Fuse & relay box (f/b) (behind left side of dash) Fuse 15a Fuse 20a Ge-1 (top left side of engine) Ge-2 (top right of engine) Hot in acc or on Hot in on or start Ignition coil 1 (at right front of engine) Ignition coil 2 (at left front of engine) Ignition coil 3 (at right rear of engine) Ignition coil 4 (at left rear of engine) Interior lights system Nca Pcv diagnosis connector Power steering oil pressure switch (at left front of engine) Red Shield & sensor ground joint connector (behind right side of dash) Starting/charging system 2.5L Turbo, Engine Performance Wiring Diagram (2 of 4) for Subaru Impreza WRX STi 2005 List of elements for 2.5L Turbo, Engine Performance Wiring Diagram (2 of 4) for Subaru Impreza WRX STi 2005: 28 (behind dash, left of steering column) data link connector (behind left side of dash) check connector (on right side of transmission case) B125 B75 B76 Diagnosis terminal Electric throttle control (on top rear of engine) Engine coolant temperature sensor & thermometer (on top left front of engine) F37 Gb-3 Gb-5 (behind center of dash) Ge-2 (top right of engine) Hot at all times Intercooler water spray switch Intercooler water spray timer (behind right side of dash) Interior lights system Left tgv angle sensor Line end connector b126 Main fuse box (m/b) (on left side of engine compt) Nca Neutral position switch Pressure sensor Red Right tgv angle sensor Sbf 5 fuse 30a Test mode connector Vehicle speed sensor 2.5L Turbo, Engine Performance Wiring Diagram (3 of 4) for Subaru Impreza WRX STi 2005 List of elements for 2.5L Turbo, Engine Performance Wiring Diagram (3 of 4) for Subaru Impreza WRX STi 2005: 40 (at left side of engine) left active valve control solenoid (at right side of engine) right active valve control solenoid (behind center of dash) driver's control center differential control module B158 B380 Combination meter Drain valve (under right rear of vehicle) Fuel level sensor Fuel pump Fuel pump assembly (on top of fuel tank) Fuel pump control module (sedan: at right side of trunk) (wagon: behind right rear quarterpanel) Fuel pump relay (behind right side of dash) Fuel sub level sensor (on top of fuel tank) Fuel tank pressure sensor (on top center of fuel tank) Fuel temperature sensor Fuse & relay box (f/b) (behind left side of dash) Fuse 10a Gb-3 Gb-4 (behind right side of dash) Gb-7 (under right front seat) Gb-8 (sedan: near license plate light) (coupe: under right taillight assembly) Hot in on or start I/f I10 I11 I12 Intercooler water spray motor & level warning switch Intercooler water spray tank level warning light Internal pressure solenoid valve Mal- function indicator light Micro computer Nca Oil pres- sure warning light Oil pressure switch (on front of engine) Pressure control solenoid valve (under center rear of Red Speedometer Tachometer Temp gauge Vehicle) 2.5L Turbo, Engine Performance Wiring Diagram (4 of 4) for Subaru Impreza WRX STi 2005 List of elements for 2.5L Turbo, Engine Performance Wiring Diagram (4 of 4) for Subaru Impreza WRX STi 2005: 26 (at left front of engine) fuel injector 2 (at left rear of engine) fuel injector 4 (at right front of engine) fuel injector 1 (at right rear of engine) fuel injector 3 (behind left side of dash) accelerator position sensor (behind right side of dash) shield & sensor ground joint connector (on rear of engine) knock sensor (top right of engine) ge-2 B122 B134 B136 Cruise control system Engine control module (behind right side of dash) Front oxygen (a/f) sensor (on front of front catalytic converter) Ge-1 (top left side of engine) Left active valve control angle sensor Left tumble generator valve (tgv) (at left rear of engine) Mass air flow sensor Nca Pnk Purge control solenoid valve (on intake manifold) Rear oxygen sensor Red Right active valve control angle sensor Right tumble generator valve (tgv) (at right rear of engine) Waste gate solenoid (at right side of engine compt)
EXTERIOR LIGHTS Back-up Lamps Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for Back-up Lamps Wiring Diagram for Subaru Impreza WRX STi 2005: 21 (2.0l turbo) (2.5l turbo) (2.5l) A/t B282 B52 Back-up Back-up light Back-up light switch (on left side of transmission) Fuse & relay box (f/b) (behind left side of dash) Fuse 18 15a Gb-8 (sedan: near license plate light) (wagon: under right taillight assembly) Hot in on or start Inhibitor switch Integrated module (behind left side of dash) Left rear combination light Light M/t Right rear combination light Sedan Wagon Exterior Lamps Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for Exterior Lamps Wiring Diagram for Subaru Impreza WRX STi 2005: 75 (at right rear corner of vehicle) (wagon) trailer connector (not used) (sedan) (sedan) (wagon) (under right front seat) gb-7 (wagon) (wagon) (sedan) (wagon: under right taillight assembly) (sedan: near license plate light) gb-8 2.5l turbo B152 B158 B176 B51 B52 B69 B71 Combin- ation switch Combination meter Combination switch Engine controls system Except 2.5l turbo F36 F37 F40 F41 F68 Fuse & relay box (f/b) (behind left side of dash) Fuse 16 20a Fuse 2 15a Fuse 5 10a Fuse 5 15a Fuse 6 15a Fuse 7 20a Gb-1 (right side of engine compt) Gb-3 Gb-5 (behind center of dash) Hazard switch Head High mounted stoplight (sedan w/o rear spoiler) High mounted stoplight (wagon & sedan w/ rear spoiler) Hot at all times Hot in on or start I11 I12 I12 i12 Ignition relay (behind left side of dash, in relay block) Interior lights system Keyless entry control module (behind left end of dash) Left Left front clearance light Left front combination light Left front turn signal light Left rear combination lamp License plate light Lighting switch Main fuse box (m/b) (on left side of engine compt) Nca Off Park Parking switch (top of steering column) Power windows system Right Right front clearance light Right front combination light Right front turn signal light Right rear combination lamp Sbf-2 fuse 50a Stop- light Stoplight switch Tail & illumin- ation relay Tail- light Turn & hazard module (behind dash, right of steering column) Turn light Turn signal ind light Turn signal switch
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 3) for Subaru Impreza WRX STi 2005 List of elements for Ground Distribution Wiring Diagram (1 of 3) for Subaru Impreza WRX STi 2005: 80 (2.5l turbo) driver's control center differential control unit (2.5l turbo) left seat heater switch (2.5l turbo) yaw rate ground joint connector 2.0l turbo & 2.5l 2.5l turbo A/t select lever Abs condenser Abs control module Abs relay Air mix actuator Auto a/c control module Auto/ manual switch (2.5l turbo) B280 B283 B380 B381 B70 B71 Body integrated unit Brake fluid level warning switch Check connector Clock Clutch switch (m/t) (2.0l turbo & 2.5l turbo) Combination meter Combination switch Cruise control actuator Cruise control module Daytime running light control module Daytime running light relay Daytime running light resistor Driver side front door switch Driver side rearview mirror heater Forward switch Front wiper motor Fuel pump relay (2.0l turbo & 2.5l turbo) Gb-1 (right side of engine compt) Gb-2 (near the left headlight) Gb-3 Gb-4 (behind right side of dash) Gb-5 (behind center of dash) Glove box illum- ination light Headlight leveler switch (2.5l turbo) I10 I11 Ignition starter & steering lock assembly Ignition switch Inhibitor switch (a/t) Inter cooler water spray timer (2.5l turbo) Keyless entry control module Left front fog light Left front turn signal/ clearance light Left headlight leveler Left lo-beam headlight (hid model) Lighting Main fan motor (2.0l turbo & 2.5l turbo) Main fan motor (2.5l) Main relay (2.0l turbo) Mirror heater relay Mode actuator Nca Passenger side front door switch Power window main switch Power window relay Rear 12v accessory relay Rear defogger switch Rearview mirror switch Right front fog light Right front turn signal/ clearance light Right headlight leveler Right lo-beam headlight (hid model) Security control module Security short connector Sub fan motor (2.0l turbo & 2.5l turbo) Sub fan motor (2.5l) To compass mirror (diagram 2 of 3) Turn & hazard module Wiper Wiper deicer Wiper deicer switch Wiper deicer timer Ground Distribution Wiring Diagram (2 of 3) for Subaru Impreza WRX STi 2005 List of elements for Ground Distribution Wiring Diagram (2 of 3) for Subaru Impreza WRX STi 2005: 50 (sedan) (sedan, (wagon) (wagon) trailer connector Air bag control module B54 B55 B56 Blower fan switch Compass mirror Earth bracket Fan control amplifier From ground gb-4 (diagram 1 of 3) Fuel pump assembly (2.5l) Fuel pump control unit (2.0l turbo) Fuel pump control unit (2.5l turbo) Gb-4 (behind right side of dash) Gb-5 (behind center of dash) Gb-6 (under left front of center console) Gb-7 (under right front seat) Gb-8 (sedan: near license plate light) (wagon: under right taillight assembly) Gr (under right front of center console) Hi-mounted stop light (sedan) High- mounted stop light Inter cooler water spray motor & level warning switch Left rear combination combination light Left rear door switch Left seat heater Left seat heater switch License plate light Passenger side door lock switch Passenger side rearview mirror heater Radio Rear defogger Rear differential oil temperature sensor Rear gate latch switch (wagon) Rear spoiler) Rear wiper intermittent module (wagon) Rear wiper motor (wagon) Right rear combination light Right rear door switch Right seat heater Right seat heater switch Room light Seat belt switch Spot map light Transmission control module (2.0l turbo) Transmission control module (2.5l) Transmission ground Trunk room light switch (sedan) Ground Distribution Wiring Diagram (3 of 3) for Subaru Impreza WRX STi 2005 List of elements for Ground Distribution Wiring Diagram (3 of 3) for Subaru Impreza WRX STi 2005: 33 B134 B135 B136 B137 B84 Camshaft position sensor shield Combination meter Crankshaft position sensor shield Data link connector Diagnosis terminal Electronic throttle control shield Engine control module (2.0l turbo) Engine control module (2.5l turbo) Engine control module (2.5l) Fuel level sensor Ge-1 (2.0l turbo) (top right side of engine) Ge-1 (2.5l turbo) (top left side of engine) Ge-1 (2.5l) (top left side of engine) Ge-2 (2.5l) (top right of engine) I12 Idle air control solenoid valve Ignition coil & ignitor Ignition coil 1 Ignition coil 2 Ignition coil 3 Ignition coil 4 Knock sensor shield M/t Neutral position switch (m/t) Pcv diagnosis connector Shield & sensor ground joint connector Test mode connector Vehicle speed sensor (m/t)
HEADLIGHTS Headlights Wiring Diagram, with High Intensity Discharge for Subaru Impreza WRX STi 2005 List of elements for Headlights Wiring Diagram, with High Intensity Discharge for Subaru Impreza WRX STi 2005: 42 B152 B52 Combination meter Combination switch Dimmer & passing switch Diode F39 F40 Front foglight relay (behind left side of dash, in relay block) Front foglight switch Fuse & relay box (f/b) (behind left side of dash) Fuse 12 10a Fuse 13 10a Fuse 7 15a Fuse 8 15a Fuse 9 15a Gb-1 (right side of engine compt) Gb-3 Head Hid relay (behind left side of dash, in relay block) High beam ind light Hot at all times Hot in on or start Hot w/ tail & illumination relay energized I10 Interior lights system Joint connector Left front fog light Left headlight (high) Left headlight (low) Left headlight relay Lighting switch Main fuse box (m/b) (on left side of engine compt) Nca Off Park Pass Red Right front fog light Right headlight (high) Right headlight (low) Right headlight relay Headlights Wiring Diagram, without High Intensity Discharge for Subaru Impreza WRX STi 2005 List of elements for Headlights Wiring Diagram, without High Intensity Discharge for Subaru Impreza WRX STi 2005: 52 (a/t) B152 B52 Combination meter Combination switch Daytime running light control module (behind right side of dash) Daytime running light diode (behind right side of dash) Daytime running light relay (behind right kick panel) Daytime running light resistor (turbo: at right rear of engine compartment) (non-turbo: at right side of engine compt) Dimmer & passing switch F39 F40 Front foglight diode (behind center of dash) Front foglight relay (behind left side of dash, in relay block) Front foglight switch Fuse & relay box (f/b) (behind left side of dash) Fuse 13 10a Fuse 18 15a Fuse 7 15a Fuse 8 15a Fuse 9 15a Gb-1 (right side of engine compartment) Gb-3 Gb-4 (behind right side of dash) Generator Head Hi beam ind light (2.5l turbo) Hi beam ind light (except 2.5l turbo) High beam relay (behind right kick panel) Hot at all times Hot in on or start I10 Inhibitor switch Instrument cluster system Interior lights system Joint connector Left front foglight Left headlight (high beam) Left headlight (low beam) Left headlight relay Lighting switch Main fuse box (m/b) (on left side of engine compt) Nca Off Park Parking brake switch (on base of park brake lever) Pass Red Right front foglight Right headlight (high beam) Right headlight (low beam) Right headlight relay
HORN Horn Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for Horn Wiring Diagram for Subaru Impreza WRX STi 2005: 13 F37 F39 Fuse 6 15a Horn (at center front of engine compt) Horn (at left front of engine compt) Horn relay Horn switch Hot at all times Keyless entry control module (behind left end of dash) Main fuse box (m/b) (on left side of engine compt) Nca Security horn relay (behind left side of dash) Steering roll coil
INSTRUMENT CLUSTER
2.0L TURBO
2.5L
2.5L TURBO
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for Courtesy Lamps Wiring Diagram for Subaru Impreza WRX STi 2005: 37 B280 B281 B52 Combination meter Diode (wagon) Door Door warning light F40 F68 Fuse & relay box (f/b) (behind left side of dash) Fuse 2 20a Gb-3 Gb-4 (behind right side of dash) Gb-6 (under left front of center console) Gb-7 (under right front seat) Gb-8 (near license plate light) Gb-8 (under right taillight assembly) Hot at all times I10 I11 Integrated module (behind left side of dash) Key illumination light Left front door switch (at rear of left front door) Left rear door switch (at rear of left rear door) Luggage room light (wagon) Main fuse box (m/b) (on left side of engine compartment) Nca Off Rear gate latch switch (wagon) (at bottom center of rear gate) Right front door switch (at rear of right front door) Right rear door switch (forward of right rear wheelwell) Room light Sedan Spot map light Trunk room light (sedan) Trunk room light switch (sedan) (at rear center of trunk) Wagon
2.0L TURBO 2.0L Turbo, Instrument Illumination Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for 2.0L Turbo, Instrument Illumination Wiring Diagram for Subaru Impreza WRX STi 2005: 44 2.0l turbo 2.5l A/t select lever illumination light Auto a/c control module (auto a/c model) B134 B137 B152 B158 B280 B281 B283 B52 Clock Combination meter Combination switch (light switch) Compact disc player illumination light Dimmer circuit Driver Engine control module (behind right side of dash) F40 F68 Front fog- light switch illumination light Fuse & relay box (f/b) (behind left side of dash) Fuse 12 10a Fuse 13 10a Fuse 7 20a Gb-3 Hazard switch illumination light Head Hot at all times Hot in on or start I11 Illumination lights Integrated module (behind left side of dash) Main fuse box (m/b) (on left side of engine compartment) Mode control panel illumination light Nca Odo/trip lcd backlight Off Out temp lcd backlight Park Radio illumination light Tail & illumination relay Wiper deicer switch illumination light
2.5L 2.5L, Instrument Illumination Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for 2.5L, Instrument Illumination Wiring Diagram for Subaru Impreza WRX STi 2005: 44 2.0l turbo 2.5l A/t select lever illumination light Auto a/c control module (auto a/c model) B134 B137 B152 B158 B280 B281 B283 B52 Clock Combination meter Combination switch (light switch) Compact disc player illumination light Dimmer circuit Driver Engine control module (behind right side of dash) F40 F68 Front fog- light switch illumination light Fuse & relay box (f/b) (behind left side of dash) Fuse 12 10a Fuse 13 10a Fuse 7 20a Gb-3 Hazard switch illumination light Head Hot at all times Hot in on or start I11 Illumination lights Integrated module (behind left side of dash) Main fuse box (m/b) (on left side of engine compartment) Mode control panel illumination light Nca Odo/trip lcd backlight Off Out temp lcd backlight Park Radio illumination light Tail & illumination relay Wiper deicer switch illumination light
2.5L TURBO 2.5L Turbo, Instrument Illumination Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for 2.5L Turbo, Instrument Illumination Wiring Diagram for Subaru Impreza WRX STi 2005: 49 (behind right side of dash) gb-4 Auto a/c control module B137 B152 B158 B283 B52 B71 Circuit dimmer Clearance light ind light Clock Combination meter Combination switch Compact disc player illumination light Dimmer circuit Driver Driver's control center differential auto/manual switch Engine control module (behind right side of dash) F40 F68 Front fog light switch illumination light Fuse & relay box (f/b) (behind left side of dash) Fuse 12 10a Fuse 13 10a Fuse 7 20a Gb-3 Gb-5 (behind center of dash) Glove box illumination light Hazard switch illumination light Head Headlight leveler switch Hot at all times Hot in on or start I/f I10 I11 Intercooler water spray switch Letter plate illum light ind Lighting switch Liquid crystal display back light ind Logo light ind Main fuse box (m/b) (on left side of engine compt) Microcomputer Nca Off Park Pointer illum light ind Radio illumination light Tail & illumination relay
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 4) for Subaru Impreza WRX STi 2005 List of elements for Power Distribution Wiring Diagram (1 of 4) for Subaru Impreza WRX STi 2005: 81 (diagram 2 of 4) (not used) (on left side of engine compartment) main fuse box (m/b) 2.0l 2.5l turbo Abs control module B152 B158 B271 B280 B283 B381 B51 B52 B56 Battery Blower fan motor relay Body integrated unit Clock Combination meter Driver's control center differential control module Driver's control center differential relay F36 F37 F39 F40 F41 F68 From ignition switch g Front fog light relay Fuse & relay box (f/b) (behind left side of dash) Fuse 1 15a Fuse 1 20a Fuse 2 15a Fuse 2 20a Fuse 3 10a Fuse 3 15a Fuse 4 10a Fuse 5 15a Fuse 6 15a Fuse 7 15a Fuse 7 20a Fuse 8 15a Fuse 8 20a Fuse 9 15a Gb-3 Generator Hazard switch Headlights system Horn relay I11 Ignition relay (behind left side of dash, in relay block) Ignition starter & steering lock assembly Keyless buzzer Keyless entry control module Left headlight relay Nca Parking switch Power window relay Power window circuit breaker Power window relay R79 Radio Rear defogger relay Red Right headlight relay Room light Sbf-1 fuse 80a 100a Sbf-3 fuse 50a Sbf-5 fuse 30a Sbf-6 fuse 30a Security control module Security horn relay Spot map light Starter motor To fuel pump relay (diagram 4 of 4) To fuse & relay box fuse 13 (diagram 2 of 4) To main fuse box sbf-4 (diagram 2 of 4) To tail & illumination relay (diagram 3 of 4) Trailer connector Transmission control module Power Distribution Wiring Diagram (2 of 4) for Subaru Impreza WRX STi 2005 List of elements for Power Distribution Wiring Diagram (2 of 4) for Subaru Impreza WRX STi 2005: 59 10a 30a A/t Abs control module Abs relay Acc Auto a/c control module B134 B158 B271 B283 B94 Clock Combination meter Combination switch Cruise control module (a/t) Engine control module (a/t) F35 F36 F38 F40 From main fuse box headlight relays (diagram 1 of 4) From main fuse box sbf-1 (diagram 1 of 4) Front washer motor Front wiper motor Front wiper switch Fuse & relay box (f/b) (behind left side of dash) Fuse 13 10a Fuse 14 10a Fuse 15 30a Fuse 9 15a Generator I11 Ignition switch Inhibitor switch Interrupt relay Lock M/t Main fuse box (m/b) (on left side of engine compt) Nca Off Radio Rear washer motor Rear wiper intermittent module Rear wiper motor Relay holder Sbf holder (on left side of engine compt) Sbf-2 fuse 50a Sbf-4 fuse 50a Short connector Start Starter interlock relay To air conditioning fuse holder (diagram 4 of 4) To fuse & relay box (diagram 4 0f 4) To fuse & relay box fuse 18 (diagram 3 of 4) To fuse & relay box fuse 4 (diagram 4 of 4) To ignition relay (diagram 1 of 4) W/ security W/o security Power Distribution Wiring Diagram (3 of 4) for Subaru Impreza WRX STi 2005 List of elements for Power Distribution Wiring Diagram (3 of 4) for Subaru Impreza WRX STi 2005: 95 14 (behind left side of dash) (not used) 2.0l turbo 2.0l turbo, 2.5l turbo 2.5l 2.5l turbo A/t select lever illumination light Ab3 Abs relay Air bag control module Air conditioning relay Air conditioning relay holder (at left side of engine compt) Air conditioning switch Auto a/c control module Automatic a/c B134 B137 B152 B158 B271 B281 B282 B381 B51 B52 B54 Back-up light switch (m/t) Blower fan motor relay Blower motor relay Body integrated unit Check connector Clock Clutch switch (m/t) Combination meter Compact disc player illumination light Cruise control main switch Cruise control module Daytime running light relay Driver's control center diff auto/manual switch (2.5l turbo) Driver's control center differential control module Driver's control center differential relay Drl control module Engine control module F27 F41 From fuse & relay box f40 pin 9 (diagram 1 of 4) From ignition switch (diagram 2 of 4) Front fog light switch illumination light Fuel pump relay Fuse & relay box (f/b) Fuse 11 15a Fuse 12 10a Fuse 17 15a Fuse 18 15a Fuse 6 15a Glove box illumination light (2.5l turbo) Hazard switch illumination light Headlight leveler switch Hid relay High beam relay I11 Ignition coil 1 Ignition coil 2 Ignition coil 3 Ignition coil 4 Immobilizer control module Inhibitor switch (a/t) Inter cooler water spray switch (2.5l turbo) Keyless entry control module Left headlight leveler Lighting switch Main fan relay (2.5l) Main fan relay 1 Main fan relay 2 Manual a/c Mode control panel illumination light (except 2.5l) Nca Parking switch Pressure switch Radio illumination light Rear defogger relay Red Right headlight leveler Security control module Stop light & brake switch Sub fan relay (2.5l) Sub fan relay 1 Sub fan relay 2 Tail & illumination relay Transmission control module Vehicle speed sensor (m/t) Wiper deicer relay Wiper deicer switch illumination light Wiper deicer timer Power Distribution Wiring Diagram (4 of 4) for Subaru Impreza WRX STi 2005 List of elements for Power Distribution Wiring Diagram (4 of 4) for Subaru Impreza WRX STi 2005: 56 (not used) 2.0l turbo 2.0l turbo, 2.5l turbo 2.5l 2.5l turbo 20a Air conditioning relay holder (at left side of engine compt) B135 B158 B225 B271 B281 B52 B56 B65 B84 Body integrated unit Compass mirror Data link connector Electric throttle relay Engine control module F27 F40 From fuse & relay box (diagram 2 of 4) From main fuse box (diagram 1 of 4) From main fuse box (diagram 2 of 4) From main fuse box sbf-2 (diagram 2 of 4) Fuel pump Fuel pump relay Fuse & relay box (f/b) (behind left side of dash) Fuse 10 10a Fuse 16 20a Fuse 19 20a Fuse 20a Fuse 4 20a Gb-3 Gb-5 (behind center of dash) Gb-7 (under right front seat) Immobilizer control module Inter cooler water spray switch Inter cooler water spray timer Main fan relay Main fan relay 1 Main fan relay 2 Main relay Mirror heater relay Nca Rear 12v accessory relay (behind left side of dash, in relay block) Rear accessory socket fuse holder Relay Remote control mirror switch Stoplight switch Sub fan relay Sub fan relay 1 Transmission control module Wiper deicer relay
POWER DOOR LOCKS Power Door Locks Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for Power Door Locks Wiring Diagram for Subaru Impreza WRX STi 2005: 48 (behind left side of dash) (wagon: under right taillight assembly) (sedan: near license plate light) gb-8 Anti-theft system B152 B280 B281 B52 Combination meter Diode (wagon) Driver side door lock switch Exterior lights system F68 Fuse & relay box (f/b) (behind left side of dash) Fuse 11 15a Fuse 18 15a Fuse 2 20a Fuse 3 15a Gb-3 Gb-4 (behind right side of dash) Gb-5 (behind center of dash) Gb-6 (under left front of center console) Gb-7 (under right front seat) Horns system Hot at all times Hot in on or start I10 I11 Ind light door Integrated module Interior lights system Keyless buzzer (at right front of engine compt) Keyless entry control module (behind left end of dash) Left front door lock actuator (at rear of left front door) Left front door switch (at rear of left front door) Left rear door lock actuator (at rear of left rear door) Left rear door switch (at rear of left rear door) Main fuse box (m/b) (on left side of engine compt) Passenger side door lock switch Pnk Rear gate latch switch (wagon) (at bottom center of rear gate) Rear gate lock actuator (wagon) (in tailgate) Red Right front door lock actuator (at rear of right front door) Right front door switch (at rear of right front door) Right rear door lock actuator (at rear of right rear door) Right rear door switch (forward of right rear wheelwell) Trunk room light switch (sedan) (at rear center of trunk) Warning system
POWER MIRRORS Automatic Day/Night Mirror Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for Automatic Day/Night Mirror Wiring Diagram for Subaru Impreza WRX STi 2005: 17 (2.0l turbo) (2.5l turbo) (2.5l) A/t B271 B52 Back-up light switch (on left side of transmission) Compass mirror Fuse & relay box (f/b) (behind left side of dash) Fuse 15a Fuse 20a Gb-6 (under left front of center console) Hot in acc or on Hot in on or start Inhibitor switch M/t Nca Power Mirror Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for Power Mirror Wiring Diagram for Subaru Impreza WRX STi 2005: 18 B271 Change over switch Defogger system Fuse & relay box (f/b) (behind left side of dash) Fuse 4 20a Gb-6 (under left front of center console) Hot in acc or on Left rearview mirror Left/ right m Mirror heater Motor Nca Red Remote control rearview mirror switch Right rearview mirror Up/ down m W/ heated mirrors W/o heated mirrors
POWER SEATS Heated Seats Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for Heated Seats Wiring Diagram for Subaru Impreza WRX STi 2005: 19 B271 F36 Fuse & relay box (f/b) (behind left side of dash) Fuse 20a Fuse sbf-2 50a Gb-5 (behind center of dash) Gb-6 (under left front of center console) High Hot at all times Hot in acc or on Left seat heater (under left front seat) Left seat heater switch Low Main fuse box (m/b) (on left side of engine compt) Off Rear 12v accessory relay (behind left side of dash, in relay block) Relay block Right seat heater (under right front seat) Right seat heater switch
POWER TOP/SUNROOF Sunroof Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for Sunroof Wiring Diagram for Subaru Impreza WRX STi 2005: 18 Close F36 F68 Fuse 15a Gb-1 (right side of engine (compt) Hot at all times Ignition relay (behind left side of dash, in relay block) Main fuse box (on left side of engine compt) Nca Open Power window circuit breaker (under left side of dash) Power window relay (behind left side of dash, in relay block) Red Sbf-6 fuse 30a Sun roof control module & motor (at right front of headliner) Sunroof switch Tilt down Tilt up
POWER WINDOWS Power Windows Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for Power Windows Wiring Diagram for Subaru Impreza WRX STi 2005: 25 Auto down Auto up Auto up/down circuit Down F68 Fuse 5 15a Gb-5 (behind center of dash) Hot at all times Ignition relay (behind left side of dash, in relay block) Left front Left front power window motor (at center of left front door) Left rear Left rear power window motor (at center of left rear door) Left rear power window sub switch Main fuse box (m/b) (on left side of engine compt) Power tops system Power window circuit breaker (under left side of dash) Power window main switch Power window relay (behind left side of dash, in relay block) Right front Right front power window motor (at center of right front door) Right front power window sub switch Right rear Right rear power window motor (at center of right rear door) Right rear power window sub switch
RADIO Radio Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for Radio Wiring Diagram for Subaru Impreza WRX STi 2005: 21 Antenna Antenna amplifier (sedan: at left "c" pillar) (wagon: behind left rear quarterpanel) B271 Bracket earth F68 Fuse & relay box (f/b) (behind left side of dash) Fuse 2 20a Fuse 9 15a Gr (under right front of center console) Hot at all times Hot in acc or on Interior lights system Left front door speaker Left front door tweeter Left rear door speaker Main fuse box (m/b) (on left side of engine compt) Nca Radio Right front door speaker Right front door tweeter Right rear door speaker
SHIFT INTERLOCK Shift Interlock Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for Shift Interlock Wiring Diagram for Subaru Impreza WRX STi 2005: 32 "p" position switch (behind center of dash) gb-5 2.5l turbo B152 B158 B271 B280 B281 B56 Except 2.5l turbo F37 Fuse & relay box (f/b) (behind left side dash) Fuse 11 15a Fuse 15a Fuse 16 20a Fuse 3 15a Fuse 4 20a Gb-3 Gb-4 (behind right side of dash) Hot at all times Hot in acc or on Hot in on or start Inhibitor switch Integrated module (behind left side of dash) Interior lights system Main fuse box (m/b) (on left side of engine compt) Red Shift lock diode (behind left side of dash) Shift lock solenoid Steering lock Stop & brake switch (on bracket, above brake pedal) Transmission control module (behind left side of dash)
STARTING/CHARGING Charging Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for Charging Wiring Diagram for Subaru Impreza WRX STi 2005: 27 (turbo) (except turbo) 2.5l turbo Acc B158 Battery Charge ind Combination meter Except 2.5l turbo F35 F38 F39 Fuse & relay box (f/b) (behind left side of dash) Fuse 13 10a Fuse 3 10a Generator I10 I11 Ignition switch Lock Main fuse box (m/b) (on left side of engine compt) Nca On off Power distribution system Sbf-1 fuse 80a 100a Sbf-4 fuse 50a Start Starter motor Starting Wiring Diagram, M/T for Subaru Impreza WRX STi 2005 List of elements for Starting Wiring Diagram, M/T for Subaru Impreza WRX STi 2005: 26 (turbo) (except turbo) Acc Anti-theft system B134 B135 B137 Battery Clutch switch (on bracket, above clutch pedal) Engine control module (behind right side of dash) Except turbo Gb-5 (behind center of dash) Ignition switch Interrupt relay (behind left side of dash) Lock Main fuse box (m/b) (on left side of engine compt) Nca On off Sbf-1 fuse 80a 100a Sbf-4 fuse 50a Short connector Start Starter interlock relay (behind left side of dsh, in relay block) Starter motor Turbo W/ anti-theft W/o anti-theft
2.0L TURBO 2.0L Turbo, Starting Wiring Diagram, A/T for Subaru Impreza WRX STi 2005 List of elements for 2.0L Turbo, Starting Wiring Diagram, A/T for Subaru Impreza WRX STi 2005: 25 (behind right side of dash) engine control module (turbo) (except turbo) 2.0l turbo 2.5l Acc Anti-theft system B134 B135 B137 Battery Ignition switch Inhibitor switch Interrupt relay (behind left side of dash) Lock Main fuse box (m/b) (on left side of engine compt) Nca On off Relay holder (2.5l) Sbf-1 fuse 80a 100a Sbf-4 fuse 50a Short connector Start Starter motor W/ anti-theft W/o anti-theft
2.5L 2.5L, Starting Wiring Diagram, A/T for Subaru Impreza WRX STi 2005 List of elements for 2.5L, Starting Wiring Diagram, A/T for Subaru Impreza WRX STi 2005: 25 (behind right side of dash) engine control module (turbo) (except turbo) 2.0l turbo 2.5l Acc Anti-theft system B134 B135 B137 Battery Ignition switch Inhibitor switch Interrupt relay (behind left side of dash) Lock Main fuse box (m/b) (on left side of engine compt) Nca On off Relay holder (2.5l) Sbf-1 fuse 80a 100a Sbf-4 fuse 50a Short connector Start Starter motor W/ anti-theft W/o anti-theft
SUPPLEMENTAL RESTRAINTS Supplemental Restraints Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for Supplemental Restraints Wiring Diagram for Subaru Impreza WRX STi 2005: 31 (near bottom of right "a" pillar) Ab3 Ab7 Ab8 Air bag circuit Air bag control module (under front of center console) Air bag warning light Check connector (behind left side of dash) Combination meter Driver side inflator Fuse & relay box (f/b) (behind left side of dash) Fuse 10a Fuse 15a Gb-3 Gb-4 (behind right side of dash) Gb-5 (behind center of dash) Hot in on or start I10 I11 Left front sub sensor (under left headlight assembly) Left pretensioner (w/elr) (at left "b" pillar) Left side air bag sensor (forward of left rear wheelwell) Left side inflator Nca Passenger side inflator Red Right front sub sensor (under right headlight assembly) Right pretensioner (w/elr) (at right "b" pillar) Right side air bag sensor (forward of right rear wheelwell) Right side inflator Steering roll connector
TRANSMISSION
2.0L TURBO 2.0L Turbo, Transmission Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for 2.0L Turbo, Transmission Wiring Diagram for Subaru Impreza WRX STi 2005: 59 (behind dash, left of steering column) data link connector (behind left side of dash) check connector (on right side of transmission case) (under left side of dash) line end check connector 2-4b timing solenoid A/t control (transmission) A/t oil temp ind A18 A19 A=b134 b=b135 d=b137 Awd ind B152 B158 B19 B20 B28 B54 B55 B56 Combination meter Cruise control system D14 Dimmer circuit Engine control module (ecm) (behind right side of dash) F37 Fuse & relay box (f/b) Fuse 10a Fuse 15a Fuse 20a Gb-3 Gb-4 (behind right side of dash) Hot at all times Hot in on or start I/f I10 I11 I12 Inhibitor switch L/c timing solenoid Line pressure solenoid Main fuse box (m/b) Micro- computer Nca Red Sensor atf temperature Shield & sensor ground joint connector (behind right side of dash) Shield joint connector (behind left side of dash) Shift solenoid 2 Solenoid 1 shift Solenoid 2-4b Solenoid awd Solenoid lock-up Speed- meter Stoplight switch (on bracket, above brake pedal) Throttle position sensor (on throttle body assembly) Torque converter turbine speed sensor Transmission control module (tcm) (behind left side of dash) Vehicle speed sensor 1 (awd) Vehicle speed sensor 2
2.5L 2.5L, Transmission Wiring Diagram (1 of 2) for Subaru Impreza WRX STi 2005 List of elements for 2.5L, Transmission Wiring Diagram (1 of 2) for Subaru Impreza WRX STi 2005: 36 (on right side of transmission case) A/t oil temp ind Accelerator position sensor (behind left side of dash) Awd ind B134 B136 B136 b136 B137 B158 B54 B55 Combination meter Dimmer circuit Engine control module (behind right side of dash) Fuse & relay box (f/b) Fuse 10a Fuse 20a Gb-3 Gb-4 (behind right side of dash) Hot at all times Hot in on or start I/f I10 I11 I12 Inhibitor switch Micro- computer Nca Red Shield joint connector (behind left side of dash) Speedo- meter Stoplight switch (on bracket, above brake pedal) Torque converter turbine speed sensor Transmission control module (tcm) (behind left side of dash) Vehicle speed sensor 1 Vehicle speed sensor 2 (awd) 2.5L, Transmission Wiring Diagram (2 of 2) for Subaru Impreza WRX STi 2005 List of elements for 2.5L, Transmission Wiring Diagram (2 of 2) for Subaru Impreza WRX STi 2005: 28 (behind left side of dash) check connector 2-4 brake duty A/t control (transmission) Awd Awd duty B152 B56 Data link connector (behind dash, left of steering column) F37 Fuse & relay box (f/b) Fuse 10a Fuse 15a Gb-1 (behind right side of front bumper) High clutch duty Hot at all times Hot in on or acc Hot in on or start Liner solenoid line pressure Lock-up duty Low & reverse duty Low clutch duty Main fuse box (m/b) Red Relay block Sensor atf temperature Shift interlock system Switch Transmission control module (tcm) (behind left side of dash)
2.5L TURBO 2.5L Turbo, Transmission Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for 2.5L Turbo, Transmission Wiring Diagram for Subaru Impreza WRX STi 2005: 41 (right side of engine compt) ge-1 Anti-lock brakes & engine controls systems Anti-lock brakes system Auto Auto-manual switch B152 B158 B380 B381 Center differential solenoid Combination meter Dimmer circuit Driver's control center differential control module (behind center of dash) Driver's control center differential switch Driver's control center off relay (behind left end of dash) Engine controls system F37 Fuse & relay box (f/b) (behind left side of dash) Fuse 10a Fuse 15a Gb-3 Ge-4 (behind right side of dash) Ground joint connector (at right kick panel) Hot at all times Hot in on or start I10 I11 I12 Interior lights system Joint connector (behind right side of dash) Lock Main fuse box (m/b) (left side of eng compt) Nca Neutral position switch R148 R159 Rear differential oil temp warning light ind Rear differential oil temperature sensor Rear differential temperature circuit Red Yaw rate sensor (below center console)
WARNING SYSTEMS Warning Systems Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for Warning Systems Wiring Diagram for Subaru Impreza WRX STi 2005: 26 B152 B158 B280 B281 Combination meter Door warning ind F37 F68 Fuse & relay box (f/b) (behind left side of dash) Fuse 11 15a Fuse 13 10a Fuse 2 20a Fuse 6 15a Gb-3 Gb-7 (under right front seat) Hot at all times Hot in on or start I10 I11 Ignition starter & steering lock assembly Integrated module (behind left side of dash) Left front door switch (at rear of left front door) Main fuse box (m/b) (on left side of engine compt) Nca Seat belt switch (in driver's seat belt buckle) Seat belt warning light ind
WIPER/WASHER Front Wiper/Washer Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for Front Wiper/Washer Wiring Diagram for Subaru Impreza WRX STi 2005: 21 B158 Combination switch Front washer motor (at left front of engine compt) Front wiper motor (at left rear of engine compt) Fuse & relay box (f/b) (behind left side of dash) Fuse 15 30a Gb-3 Hot in acc or on Int Int volume Intermittent wiper module Mist Mist switch Nca Off Park Rear wiper circuit Run Washer switch Wiper motor Wiper switch Rear Wiper/Washer Wiring Diagram for Subaru Impreza WRX STi 2005 List of elements for Rear Wiper/Washer Wiring Diagram for Subaru Impreza WRX STi 2005: 20 (sedan: near license plate light) (wagon: under right taillight assembly) gb-8 B158 Combination switch F40 Front wiper/ washer circuit Fuse & relay box (f/b) (behind left side of dash) Fuse 14 10a Gb-3 Gb-8 (sedan: near license plate light) (wagon: under right taillight assembly) Hot in acc or on Nca Off Park Rear washer motor (at left front of engine compt) Rear wiper intermittent module (behind right rear quarterpanel) Rear wiper motor (at center of rear gate) Rear wiper/ washer switch Run Wash Wiper motor
