Diagram sections — 27 (46 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 WINDOWS RADIO SHIFT INTERLOCK STARTING/CHARGING SUPPLEMENTAL RESTRAINTS TRANSMISSION WARNING SYSTEMS WIPER/WASHER
AIR CONDITIONING
2.0L 2.0L, Manual A/C Wiring Diagram for Subaru Impreza WRX 2003 List of elements for 2.0L, Manual A/C Wiring Diagram for Subaru Impreza WRX 2003: 44 A/c pressure switch (on left side of engine compartment) Air conditioning relay Air conditioning relay holder (on left side of engine compartment) Air conditioning switch B134 B135 B137 B152 B52 Blower fan motor (behind right side of dash) Blower fan motor relay (behind left side of dash) Blower fan motor resistor (behind right side of dash) Blower fan switch Combination meter Compressor Engine control module (behind right side of dash) Engine controls system Engine coolant temperature sensor & thermometer (on top left front of engine) Evaporator thermoswitch (behind right side of dash) F27 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 compartment) 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) (e/g) (behind right side of dash) Magnetic clutch Main fan relay-1 Main fan relay-2 Nca Radiator main fan motor (behind left side of radiator) Sub fan motor (behind right side of radiator) Sub fan relay-1 Sub fan relay-2 Thermal protector
2.5L 2.5L, Manual A/C Wiring Diagram for Subaru Impreza WRX 2003 List of elements for 2.5L, Manual A/C Wiring Diagram for Subaru Impreza WRX 2003: 42 (behind right side of dash) joint connector (shield & sensor ground) (e/g) (on left side of engine compartment) a/c pressure switch A/c relay (in relay holder) Air conditioning relay holder (on left side of engine compartment) 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 motor resistor (behind right side of dash) Blower fan switch Combination meter Compressor Engine control module (behind right side of dash) Engine controls system Engine coolant temperature sensor & thermometer (on top center of engine) Evaporator thermoswitch (behind right side of dash) F27 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 compartment) 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 relay Radiator main fan motor (behind left side of radiator) Sub fan motor (behind right side of radiator) Sub-fan relay Thermal protector
ANTI-LOCK BRAKES Anti-lock Brakes Wiring Diagram for Subaru Impreza WRX 2003 List of elements for Anti-lock Brakes Wiring Diagram for Subaru Impreza WRX 2003: 58 (behind left side of dash) 10a 2.0l 2.5l Abs control module (on right side of engine compartment) Abs ind Abs relay (behind left side of dash) Abs ``g" sensor (near center of passenger compartment floor) B158 B302 B52 B54 B55 Check connector Combination meter Connector (behind left side of dash) Data link connector (behind dash, left of steering column) Diagnosis 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-1 (right side of engine compartment) Gb-5 (behind center of dashboard) Hot at all times Hot in run or start I10 I11 Left front abs sensor Left rear abs sensor Main fuse box (m/b) (on left side of engine compartment) Motor relay Nca Pump motor Red Relay holder (on left side of engine compartment) Right front abs sensor Right rear abs sensor Rl in Rl out Rr in Rr out Sbf holder (on left side of engine compartment) Sbf-4 fuse 50a Sbf-8 fuse 30a Shield joint connector (at right front corner of engine compt) Stoplight switch (on bracket, above brake pedal) Transmission control module (behind left side of dash) Valve relay W/ cruise W/o cruise
ANTI-THEFT Power Door Locks Wiring Diagram, with Keyless Entry for Subaru Impreza WRX 2003 List of elements for Power Door Locks Wiring Diagram, with Keyless Entry for Subaru Impreza WRX 2003: 58 (behind left side of dash) (wagon: right rear end of vehicle) (sedan: near license plate light) gb-8 Acc B152 B158 B271 B280 B281 B52 Combination meter Diode (wagon) Driver's side door lock switch Driver's side front door lock actuator Exterior lights system F40 F68 Fuse & relay box (f/b) (behind left side of dash) Fuse & relay box (f/b) (behind left side of dash) Fuse 11 15a Fuse 18 15a Fuse 2 15a Fuse 3 15a Fuse 7 20a Gb-5 (behind center of dashboard) Gb-7 (behind center of dashboard) Horns system Hot at all times Hot in on or start I10 I11 Ignition switch Ind door Ind security Integrated module Interior lights system Interrupt relay (behind left side of dash) Keyless entry control module (behind left side of dash) Left front door switch Left rear door lock actuator Left rear door switch Main fuse box (m/b) (on left side of engine compt) Off Passenger's side door lock switch Passenger's side front door lock actuator Pnk Rear gate latch switch (wagon) Rear gate lock actuator (wagon) Red Right front door switch Right rear door lock actuator Right rear door switch Security control module (behind right side of dash) Security horn (at right rear corner of engine compartment) Security horn relay (behind left side of dash) Start Starting/ charging system Trunk room light switch (sedan) Warning system
BODY CONTROL MODULES Body Control Modules Wiring Diagram for Subaru Impreza WRX 2003 List of elements for Body Control Modules Wiring Diagram for Subaru Impreza WRX 2003: 23 B152 B271 B280 B281 B52 Door locks system F40 F68 Fuse & relay box (f/b) (behind left side dash) Fuse 11 15a Fuse 2 15a Fuse 3 15a Fuse 4 20a Gb-5 (behind center of dashboard) 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 Warnings system
COMPUTER DATA LINES
2.0L 2.0L, Computer Data Lines Wiring Diagram for Subaru Impreza WRX 2003 List of elements for 2.0L, Computer Data Lines Wiring Diagram for Subaru Impreza WRX 2003: 38 (behind left side of dash) Ab6 Abs control module (on right side of engine compartment) Air bag control module Air bag ind B125 B126 B134 B52 B56 B75 B76 B84 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 connector Diagnosis terminal (behind left side of dash) Engine control module (behind right side of dash) F37 Fuel pump assembly (on top of fuel tank) Fuse & relay box (f/b) (behind left side of dash) Fuse 18 15a Gb-5 (behind center of dashboard) Ge-1 (top left side of engine) Hot at all times Hot in start or run I11 Line end check connector Line end connector M/t Main fuse box (m/b) (on left side of engine compartment) Neutral position switch (m/t) (on left side of transmission) Sbf-5 fuse 30a Test mode connector (behind left side of dash) 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 2003 List of elements for 2.5L, Computer Data Lines Wiring Diagram for Subaru Impreza WRX 2003: 41 (behind left side of dash) (on top of engine) Ab6 Abs control module (on right side of engine compartment) Air bag control module Air bag ind B125 B126 B134 B135 B136 B137 B52 B54 B55 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 connector Diagnosis terminal (behind left side of dash) Engine control module (behind right side of dash) F37 Fuel pump assembly (on top of fuel tank) Fuse & relay box (f/b) (behind left side of dash) Fuse 18 15a Gb-5 (behind center of dashboard) Hot at all times Hot in start or run I11 Line end check connector Line end connector M/t Main fuse box (m/b) (on left side of engine compartment) Neutral position switch (m/t) (on left side of transmission) Sbf-5 fuse 30a Test mode connector (behind left side of dash) 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 2.0L, Cooling Fan Wiring Diagram for Subaru Impreza WRX 2003 List of elements for 2.0L, Cooling Fan Wiring Diagram for Subaru Impreza WRX 2003: 26 (behind right side of of radiator) Air conditioning relay holder (on left side of engine compartment) B135 B137 Combination meter Engine control module (behind right side of dash) Engine controls system Engine coolant temperature sensor & thermometer (on top left front of engine) F27 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) (e/g) (behind right side of dash) Main fan relay 1 Main fan relay 2 Nca Radiator main fan motor (behind left side of radiator) Sub fan motor Sub-fan relay 1 Sub-fan relay 2
2.5L 2.5L, Cooling Fan Wiring Diagram for Subaru Impreza WRX 2003 List of elements for 2.5L, Cooling Fan Wiring Diagram for Subaru Impreza WRX 2003: 23 (behind right side of radiator) Air conditioning relay holder (on left side of engine compt) B134 B137 Combination meter Engine control module (behind right side of dash) Engine controls system Engine coolant temperature sensor & thermometer (on top left front of engine) F27 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) (e/g) (behind right side of dash) Main fan relay Radiator main fan motor (behind left side of radiator) Sub fan motor Sub-fan relay
CRUISE CONTROL Cruise Control Wiring Diagram for Subaru Impreza WRX 2003 List of elements for Cruise Control Wiring Diagram for Subaru Impreza WRX 2003: 46 (2.0l) (2.5l) (a/t) (on top of engine) ge (top left side of engine) ge-1 A/t Anti-theft system B158 B52 B54 B55 B56 Cancel Check connector (behind left side of dash) Clutch switch (on bracket, above clutch pedal) Cruise control Cruise control actuator (on right side of engine compt) Cruise control module (behind left side of dash) Data link connector (behind dash, left of steering column) Except wrx Fuse & relay box (f/b) (behind left side of dash) Fuse 16 20a Fuse 18 15a Gb-4 (behind right side of dashboard) Horns system Hot at all times Hot in on or start Illum Inhibitor switch (a/t) (on left side of transmission) Interior lights system Interrupt relay (behind left side of dash) M/t Main switch Off P/n Resume Set Short connector Starting/charging system Stoplight & brake switch (on bracket, above brake pedal) Sub switch 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 Wrx
DEFOGGERS Defoggers Wiring Diagram for Subaru Impreza WRX 2003 List of elements for Defoggers Wiring Diagram for Subaru Impreza WRX 2003: 41 2.0l 2.5l Acc B134 B135 B152 B158 B271 B280 B281 Engine control module (behind right side of dash) F40 F68 Fuse & relay box (f/b) (behind left side of dash) Fuse 15a Fuse 20a Gb-3 (near bottom of "a" pillar) Gb-5 (behind center of dashboard) Gb-8 (right rear end of vehicle) Gd (left side of package tray) Hot at all times Hot in on or start Ignition switch Integrated module (behind left side of dash) Interior lights system Left rearview mirror 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 Off Rear defogger Rear defogger relay Rear defogger switch Red Right rearview mirror Sedan Start W/ choke coil W/o choke coil Wagon
ENGINE PERFORMANCE
2.0L 2.0L, Engine Performance Wiring Diagram (1 of 4) for Subaru Impreza WRX 2003 List of elements for 2.0L, Engine Performance Wiring Diagram (1 of 4) for Subaru Impreza WRX 2003: 35 (behind left side of dash) diagnosis connector (behind right side of dash) main relay (left rear of eng) ge-1 (right side of dash) gb-4 A/c system A/t Acc B134 B135 B84 Camshaft position sensor (left front of engine) Crankshaft position sensor (lower front of engine) Defogger system Engine control module (behind right side of dash) Exterior lights system Ge-1 (left rear of eng) Ge-1 (top left side of engine) Ge-2 (top right side of engine) Hot at all times Ignition switch Knock sensor (left side of eng) Left tgv (top left rear of engine) M/t Mass airflow sensor (right side of engine compt, in air intake duct) Nca Neutral position switch (m/t) Off Power steering oil pressure switch (right front of engine) Red Right tgv (right front of engine) Shielded Shielded & sensor ground joint connector (right side of dash) Start Starting/ charging system Starting/charging system 2.0L, Engine Performance Wiring Diagram (2 of 4) for Subaru Impreza WRX 2003 List of elements for 2.0L, Engine Performance Wiring Diagram (2 of 4) for Subaru Impreza WRX 2003: 25 (behind left side of dash) check connector (top left side of eng) ge-1 A/t B152 B52 B54 B55 B56 Engine coolant temperature sensor &thermometer (top left front of engine) Exhaust gas temperature sensor (in right exhaust system) F37 Fuse & relay box (behind left side of dash) Fuse 15a Fuse 30a Hot in on & start Left tgv angle sensor (top left front of engine) Line end connector M/t Main fuse box (on left side of engine compt) Pressure sensor (at top rear of engine) Red Right tgv angle sensor (top right of engine) Throttle position sensor (on throttle body assembly) Transmission control module (behind left side of dash) Vehicle speed sensor (m/t) (right side of trans case) 2.0L, Engine Performance Wiring Diagram (3 of 4) for Subaru Impreza WRX 2003 List of elements for 2.0L, Engine Performance Wiring Diagram (3 of 4) for Subaru Impreza WRX 2003: 33 (left of steering column) data link connector (top left side of eng) ge-1 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 (right side of cargo area) Fuel pump relay (behind right side of dash) Fuel sub level sensor (top of fuel tank) Fuel tank pressure sensor (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 (behind center of dash) Hot in on & start I10 I11 I12 Internal pressure solenoid valve Line end connector Mal- function indicator light Oil pres- sure warning light Oil pressure switch (on front of engine) Pressure control solenoid valve (under rear center of vehicle) R58 Red Speedometer Tach Temp gauge 2.0L, Engine Performance Wiring Diagram (4 of 4) for Subaru Impreza WRX 2003 List of elements for 2.0L, Engine Performance Wiring Diagram (4 of 4) for Subaru Impreza WRX 2003: 24 (top left side of eng) ge-1 (top left side of engine) (top left side of engine) ge-1 A/c system B136 B137 Cooling fan system Engine control module (behind right side of dash) Front oxygen (a/f) sensor (front of catalytic converter) Fuel injectors Ge-1 Ge-1 (top left side of eng) Idle air control solenoid valve (top rear of engine) Ignition coil 1 Ignition coil 2 Ignition coil 3 Ignition coil 4 Nca Pnk Purge control solenoid valve (on intake manifold) Rear oxygen sensor (rear of catalytic converter) Red Shielded Wastegate solenoid (right side of engine compt)
2.5L 2.5L, Engine Performance Wiring Diagram (1 of 3) for Subaru Impreza WRX 2003 List of elements for 2.5L, Engine Performance Wiring Diagram (1 of 3) for Subaru Impreza WRX 2003: 30 (behind left side of dash) interrupt relay (behind right side of dash) main relay A/c system A/t Acc B134 B136 Camshaft position sensor (on left front of engine) Crankshaft position sensor (on lower front of engine) Engine control module (behind right side of dash) Gb-4 (behind right side of dash) Ge (on top of engine) Hot at all times Ignition switch Inhibitor switch (on left side of transmission) Knock sensor (on left side of engine) M/t Nca Neutral position switch (on left side of transmission) Off Power steering oil pressure switch (at right front of engine) Red Shielded Short connector Start Starter interlock relay (behind left side of dash) Starting/ charging & headlights systems Starting/ charging system W/ anti-theft W/o anti-theft 2.5L, Engine Performance Wiring Diagram (2 of 3) for Subaru Impreza WRX 2003 List of elements for 2.5L, Engine Performance Wiring Diagram (2 of 3) for Subaru Impreza WRX 2003: 35 (behind center of dash) gb-7 (behind left side of dash) check connector (behind right side of dash) shielded & sensor ground joint connector (left of steering column) data link connector (on top of engine) ge (top center of fuel tank) fuel tank pressure sensor A/t B152 B158 B52 Engine coolant temperature sensor & thermometer (on top center of engine) 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 relay (behind right side of dash) Fuel sub level sensor Fuel temp sensor Fuse & relay box (behind left side of dash) Fuse 10a Fuse 15a Gb-5 (behind center of dash) Ge (on top of engine) Hot in on or start Instru- ment cluster system Intake air temp- erature sensor (on top of engine) Line end check connector M/t Nca Pressure sensor (on top 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 Impreza WRX 2003 List of elements for 2.5L, Engine Performance Wiring Diagram (3 of 3) for Subaru Impreza WRX 2003: 42 (center rear of vehicle) pressure control solenoid valve (in relay block) ignition relay (on intake manifold) purge control solenoid valve (top front of engine) air assist injector solenoid valve (under right rear of vehicle) drain valve A/c system B125 B135 B137 B54 B55 Combination meter Cooling fans system Custom cpu Defogger system Diagnosis connector (behind left side of dash) Engine control module (behind right side of dash) Exterior lights system Exterior lights, power windows systems F37 F68 Fuel injectors Fuse 15a Fuse sbf-5 30a Gb-3 (bottom of "a" pillar) Ge (right rear of eng) Hot at all times I/f I10 I12 Idle air control solenoid valve (on front of engine) Ignition coil & ignitor (top front of eng) Internal pressure solenoid valve Line end connector Main fuse box Mal- function indicator lamp Pnk Red Shielded Speedo- meter circuit Tacho- meter Transmission control module (behind left side of dash)
EXTERIOR LIGHTS Back-up Lamps Wiring Diagram for Subaru Impreza WRX 2003 List of elements for Back-up Lamps Wiring Diagram for Subaru Impreza WRX 2003: 20 (2.0l) (2.5l) A/t B280 B52 Back-up Back-up light Back-up light switch (2.5l: 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: right rear end of vehicle) Hot in on or start Inhibitor switch (on left side of transmission) 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 2003 List of elements for Exterior Lamps Wiring Diagram for Subaru Impreza WRX 2003: 74 (behind center of dashboard) gb-7 (not used) (sedan) (wagon) (wagon) (sedan) (wagon) trailer connector (wagon: right rear end of vehicle) (sedan: near license plate light) gb-8 B152 B158 B51 B52 B69 B71 Combin- ation switch Combination meter Combination switch Control 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 (near bottom of "a" pillar) Gb-5 (behind center of dashboard) 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 I10 I12 Ignition relay (behind left side of dash, in relay block) Interior lights system Left front clearance light Left front combination light Left front turn signal light Left rear combination lamp Left side marker light Left turn ind 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 front clearance light Right front combination light Right front turn signal light Right rear combination lamp Right side marker light Right turn ind Sbf-2 fuse 50a Security control module (behind right side of dash) Stop- light Stoplight switch Stoplight switch (on bracket, above brake pedal) Tail & illumin- ation relay Tail- light Turn & hazard module (behind dash, right of steering column) Turn light Turn signal switch W/ cruise W/o cruise
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 3) for Subaru Impreza WRX 2003 List of elements for Ground Distribution Wiring Diagram (1 of 3) for Subaru Impreza WRX 2003: 86 A/t select lever Abs control module Abs relay Abs shield joint connector B104 B106 B116 B119 B12 B157 B16 B168 B171 B176 B264 B267 B268 B281 B284 B301 B303 B32 B42 B46 B47 B70 B71 B93 B94 B96 Brake fluid level warning switch Check connector Clock Clutch switch (m/t) Combination meter Combination switch Cruise control actuator Cruise control module Daytime running light control module Daytime running light resistor Driver side front door switch Driver side rearview mirror heater F67 Forward switch Front wiper motor Fuel pump relay (2.0l) Gb-1 (right side of engine compt) Gb-2 (near the left headlight) Gb-3 (near bottom of "a" pillar) Gb-4 (behind right side of dashboard) Gb-5 (behind center of dashboard) Glove box illum- ination light I10 I11 Ignition relay Inhibitor switch (a/t) Integrated module Joint connector Key lock solenoid (a/t) Keyless entry control module Left front fog light Left front turn signal/ clearance light Left side marker light Lighting Main fan motor (2.0l) Main fan motor (2.5l) Main relay Mirror heater relay Nca Passenger side front door switch Power window main switch Power window relay Rear 12v accessory relay Rear defogger switch Remote controlled rearview mirror switch Right front fog light Right front turn signal/ clearance light Right side marker light Security control module Security short connector Shield joint connector Sub fan motor (2.0l) Sub fan motor (2.5l) To compass mirror (diagram 2 of 3) Turn & hazard module Wiper Ground Distribution Wiring Diagram (2 of 3) for Subaru Impreza WRX 2003 List of elements for Ground Distribution Wiring Diagram (2 of 3) for Subaru Impreza WRX 2003: 67 (sedan) (sedan, (wagon) (wagon) trailer connector Air bag control module B169 B54 B55 B56 Blower fan switch Compass mirror motor D15 D43 D46 D62 Earth bracket From ground gb-4 (diagram 1 of 3) Fuel pump assembly (2.5l) Fuel pump controller (2.0l) Gb-4 (behind right side of dashboard) Gb-5 (behind center of dashboard) Gb-6 (under left front of center console) Gb-7 (behind center of dashboard) Gb-8 (sedan: near license plate light) (wagon: right rear end of vehicle) Gd (left side of package tray) Gr (under right front of center console) Hi-mounted stop light High- mounted stop light 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 R116 R122 R139 R16 R22 R27 R32 R41 R42 R43 R44 R58 Radio Rear defogger (sedan) Rear defogger (wagon, Rear gate latch switch (wagon) 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 light Transmission control module (2.0l) Transmission control module (2.5l) Transmission ground Trunk room light switch (sedan) W/ choke coil model) W/ rear spoiler) W/o choke coil model) Ground Distribution Wiring Diagram (3 of 3) for Subaru Impreza WRX 2003 List of elements for Ground Distribution Wiring Diagram (3 of 3) for Subaru Impreza WRX 2003: 39 B128 B134 B135 B136 B137 B17 B25 B40 B76 B81 B84 Camshaft position sensor shield Combination meter Crankshaft position sensor shield Data link connector Diagnosis terminal E12 E31 E32 E33 E34 Engine control module (2.0l) Engine control module (2.5l) Fuel level sensor Ge (2.5l) (on top of engine) Ge-1 (2.0l) (top left side of engine) I12 Idle air control solenoid vavle 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) R58 Test mode connector Vehicle speed sensor (m/t)
HEADLIGHTS Headlights Wiring Diagram for Subaru Impreza WRX 2003 List of elements for Headlights Wiring Diagram for Subaru Impreza WRX 2003: 51 (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 (at right front of engine compartment) Dimmer & passing switch F37 F39 F40 Front foglight diode (behind center of dash) Front foglight relay 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 (near bottom of "a" pillar) Gb-4 (behind right side of dashboard) Generator Head Hi beam ind High beam relay Hot at all times Hot in on or start I11 Inhibitor switch (on left side of transmission) Instrument cluster system Interior lights system Left front foglight Left headlight 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 Red/ Right front foglight Right headlight Right headlight relay Starting/charging system
HORN Horn Wiring Diagram for Subaru Impreza WRX 2003 List of elements for Horn Wiring Diagram for Subaru Impreza WRX 2003: 10 F37 F39 Fuse 6 15a Horn Horn relay Horn switch Hot at all times Keyless entry control module (behind left side of dash) Main fuse box (m/b) (on left side of engine compt) Security horn relay (behind left side of dash)
INSTRUMENT CLUSTER
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram for Subaru Impreza WRX 2003 List of elements for Courtesy Lamps Wiring Diagram for Subaru Impreza WRX 2003: 38 B271 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 15a Gb-3 (near bottom of "a" pillar) Gb-4 (behind right side of dashboard) Gb-6 (under left front of center console) Gb-7 (behind center of dashboard) Gb-8 (near license plate light) Gb-8 (right rear end of vehicle) Hot at all times I10 I11 Integrated module (behind left side of dash) Key illumination light Left front door switch Left rear door switch Luggage room light (wagon) Luggage room light diode (wagon) Main fuse box (m/b) (on left side of engine compartment) Off Rear gate latch switch (wagon) Right front door switch Right rear door switch Room light Sedan Spot light Trunk room light (sedan) Trunk room light switch (sedan) Wagon Instrument Illumination Wiring Diagram for Subaru Impreza WRX 2003 List of elements for Instrument Illumination Wiring Diagram for Subaru Impreza WRX 2003: 45 A/t select lever illumination light B134 B135 B152 B158 B271 B280 B281 B52 Clock Combination meter Combination switch (light switch) Compact disc player illumination light Cruise control main switch illumination light Dimmer circuit Driver Engine control module (behind right side of dash) Except wrx 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 (near bottom of "a" pillar) Gb-4 (behind right side of dashboard) Glove box illumination light Hazard switch illumination light Head Hot at all times Hot in on or start I10 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 and illumination relay Wrx
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 4) for Subaru Impreza WRX 2003 List of elements for Power Distribution Wiring Diagram (1 of 4) for Subaru Impreza WRX 2003: 82 (diagram 2 of 4) (near bottom of "a" pillar) gb-3 (not used) (on left side of engine compartment) main fuse box (m/b) 2.0l 2.5l Abs control module B134 B137 B152 B158 B271 B281 B51 B52 B56 Battery Blower fan motor relay Clock Combination meter Data link connector Engine control module F36 F37 F39 F40 F41 F68 From ignition switch g Front fog light relay Fuel pump relay Fuse & relay box (f/b) (behind left side of dash) Fuse 1 15a Fuse 1 20a Fuse 2 15a 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 Generator Hazard switch Headlights system Horn relay I10 Ignition relay (behind left side of dash, in relay block) Integrated module Key illumination light Key warning switch Keyless entry control module Left headlight relay Luggage room light (wagon) Main relay Nca Parking switch Power window circuit breaker Power window relay R79 Radio Rear defogger relay Red Right headlight relay Room light Sbf-1 fuse 80a Sbf-3 fuse 50a Sbf-5 fuse 30a Sbf-6 fuse 30a Security control module Security horn relay Spot light Starter motor To ignition switch (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 Trunk room light (sedan) Power Distribution Wiring Diagram (2 of 4) for Subaru Impreza WRX 2003 List of elements for Power Distribution Wiring Diagram (2 of 4) for Subaru Impreza WRX 2003: 61 10a 2.0l 2.5l 30a A/t Abs control module Abs relay Acc B134 B136 B158 B271 B301 B94 Clock Combination meter Combination switch Cruise control module (a/t) Engine control module 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 I10 Ignition switch Inhibitor switch Interrupt relay M/t Main fuse box (f/b) (on left side of engine compt) Nca Off Radio Rear washer motor Rear wiper intermittent module Rear wiper motor Relay holder Sbf holder 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 2003 List of elements for Power Distribution Wiring Diagram (3 of 4) for Subaru Impreza WRX 2003: 81 (2.0l) (2.5l) (2.ol) (behind left side of dash) (not used) 2.0l 2.5l A/t select lever illumination light Ab6 Abs relay Air bag control module Air conditioning relay Air conditioning relay holder Air conditioning switch B134 B135 B136 B152 B158 B271 B280 B51 B52 B54 Back-up light switch (m/t) Blower fan motor relay Check connector Clock Combination meter Compact disc player illumination light Cruise control main switch Cruise control main switch illumination light Cruise control module Daytime running light relay Drl control module Engine control module F28 F29 F30 F41 F66 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 Hazard switch illumination light High beam relay I10 Ignition coil & ignitor Ignition coil 1 Ignition coil 2 Ignition coil 3 Ignition coil 4 Inhibitor switch (a/t) Integrated module Keyless entry control module Lighting switch Main fan relay (2.5l) Main fan relay 1 (2.0l) Main fan relay 2 (2.0l) Mode control panel illumination light Nca Parking switch Radio illumination light Rear defogger relay Red Security control module Sub fan relay (2.5l) Sub fan relay 1 (2.0l) Sub fan relay 2 (2.0l) Tail & illumination relay Thermal protector Transmission control module Vehicle speed sensor (m/t) Power Distribution Wiring Diagram (4 of 4) for Subaru Impreza WRX 2003 List of elements for Power Distribution Wiring Diagram (4 of 4) for Subaru Impreza WRX 2003: 44 (not used) (w/o cruise) (w/ cruise) 2.0l 2.5l 20a Air conditioning relay holder B158 B225 B271 B280 B52 B64 b65 Compass mirror F27 F28 F29 F30 F40 F66 From fuse & relay box (diagram 2 of 4) From main fuse box (diagram 2 of 4) From main fuse box sbf-2 (diagram 2 of 4) 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 (near bottom of "a" pillar) Gb-5 (behind center of dashboard) Gb-7 (behind center of dashboard) Integrated module Main fan relay Main fan relay 1 Main fan relay 2 Mirror heater relay Nca Rear 12v accessory relay Rear accessory power socket Rear accessory socket fuse holder Remote controlled rearview mirror switch Stoplight switch Sub fan relay Sub fan relay 1
POWER DOOR LOCKS Power Door Locks Wiring Diagram, without Keyless Entry for Subaru Impreza WRX 2003 List of elements for Power Door Locks Wiring Diagram, without Keyless Entry for Subaru Impreza WRX 2003: 23 B152 B271 B280 B281 B52 Driver's side door lock switch F40 F68 Fuse & relay box (f/b) (behind left side of dash) Fuse 2 15a Fuse 3 15a Gb-5 (behind center of dashboard) Gb-7 (behind center of dashboard) Hot at all times Integrated module (behind left side of dash) Left front door lock actuator Left rear door lock actuator Main fuse box (m/b) (on left side of engine compartment) Passenger's side door lock switch Rear gate lock actuator (wagon) Red Right front door lock actuator Right rear door lock actuator
POWER MIRRORS Power Mirrors Wiring Diagram for Subaru Impreza WRX 2003 List of elements for Power Mirrors Wiring Diagram for Subaru Impreza WRX 2003: 18 B271 Change over switch Defogger system Fuse & relay box (f/b) (behind left side of dash) Fuse 4 20a Gb-3 (near bottom of "a" pillar) 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 Power Seats Wiring Diagram for Subaru Impreza WRX 2003 List of elements for Power Seats Wiring Diagram for Subaru Impreza WRX 2003: 20 B271 F36 Fuse & relay box (f/b) (behind left side of dash) Fuse 20a Gb-5 (behind center of dashboard) Gb-6 (under left front of center console) High Hot at all times Hot in acc or on Left seat heater 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) Rear accessory power socket Rear accessory socket fuse holder Right seat heater Right seat heater switch Sbf-2 fuse 50a
POWER WINDOWS Power Windows Wiring Diagram for Subaru Impreza WRX 2003 List of elements for Power Windows Wiring Diagram for Subaru Impreza WRX 2003: 25 Auto down Auto up Auto up/down circuit Down F68 Fuse 5 15a Gb-5 (behind center of dashboard) Hot at all times Ignition relay (behind left side of dash, in relay block) Left front Left front power window motor Left rear Left rear power window motor Left rear power window sub switch Main fuse box (m/b) (on left side of engine compt) Power tops system Power window circuit breaker Power window main switch Power window relay (behind left side of dash, in relay block) Right front Right front power window motor Right front power window sub switch Right rear Right rear power window motor Right rear power window sub switch
RADIO Radio Wiring Diagram for Subaru Impreza WRX 2003 List of elements for Radio Wiring Diagram for Subaru Impreza WRX 2003: 20 Antenna B271 Bracket earth F68 Fuse & relay box (f/b) (behind left side of dash) Fuse 2 15a 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 2003 List of elements for Shift Interlock Wiring Diagram for Subaru Impreza WRX 2003: 29 "p" position switch B152 B158 B271 B280 B281 F37 Fuse & relay box (f/b) (behind left side dash) Fuse 11 15a Fuse 16 20a Fuse 3 15a Fuse 4 20a Fuse 6 15a Gb-4 (behind right side of dashboard) Gb-5 (behind center of dashboard) Hot at all times Hot in acc or on Hot in on or start Inhibitor switch (a/t) (on left side of transmission) Integrated module (behind left side of dash) Key lock solenoid (on steering column, behind ignition key cylinder) Key warning switch Main fuse box (m/b) (on left side of engine compt) Red Shift lock solenoid Stop & brake switch (on bracket, above brake pedal) Stoplight switch (on bracket, above brake pedal) W/ cruise control W/o cruise control
STARTING/CHARGING Charging Wiring Diagram for Subaru Impreza WRX 2003 List of elements for Charging Wiring Diagram for Subaru Impreza WRX 2003: 23 Acc B158 Battery Charge ind Combination meter F35 F38 F39 Fuse & relay box (f/b) (behind left side of dash) Fuse 13 10a Fuse 3 10a Generator I10 I11 Ignition switch Main fuse box (m/b) (on left side of engine compt) Nca Off Power distribution system Sbf-1 fuse 80a Sbf-4 fuse 50a Start Starter motor Starting Wiring Diagram for Subaru Impreza WRX 2003 List of elements for Starting Wiring Diagram for Subaru Impreza WRX 2003: 31 (2.0l) (2.5l) A/t Acc Anti-theft system B134 B136 Battery Clutch switch (on bracket, above clutch pedal) Connector Cruise control (a/t) (behind left side of dash) Daytime running light control module (behind right side of dash) Engine control module (a/t 2.0l) (behind right side of dash) Engine control module (behind right side of dash) F38 Gb-5 (behind center of dashboard) Ignition switch Inhibitor switch (on left side of transmission) Interrupt relay (behind left side of dash) M/t Main fuse box (m/b) (on left side of engine compt) Module Nca Off Sbf-1 fuse 80a Sbf-4 fuse 50a Start Starter interlock relay (behind left side of dash, in relay block) Starter motor W/ anti-theft W/o anti-theft
SUPPLEMENTAL RESTRAINTS Supplemental Restraints Wiring Diagram for Subaru Impreza WRX 2003 List of elements for Supplemental Restraints Wiring Diagram for Subaru Impreza WRX 2003: 32 (behind center of dashboard) gb-5 (behind right side of dashboard) gb-4 (near bottom of right "a" pillar) Ab17 Ab18 Ab6 Air bag circuit Air bag control module Air bag indicator light Check connector (behind left side of dash) Combination meter Diagnosis connector (behind left side of dash) Driver side inflator Fuse & relay box (f/b) (behind left side of dash) Fuse 10a Fuse 15a Gb-3 Hot in on or start I10 I11 Left front sub sensor Left pretensioner (w/elr) Left side air bag sensor Left side inflator Nca Passenger side inflator Red Right front sub sensor Right pretensioner (w/elr) Right side air bag sensor Right side inflator Steering roll connector
TRANSMISSION
2.0L 2.0L, A/T Wiring Diagram for Subaru Impreza WRX 2003 List of elements for 2.0L, A/T Wiring Diagram for Subaru Impreza WRX 2003: 58 (behind left side of dash) check connector b79 (left of steering column) data link connector (left side of transmission) (left side of transmission) inhibitor switch 2-4b timing solenoid A/t control (transmission) A/t oil temp ind A18 A19 A=b134 b=b135 c=b136 Anti-lock brakes system B152 B158 B19 B20 B28 B40 B54 B55 B56 C14 Combination meter Cpu Cruise control system Engine control module (ecm) (behind right side of dash) F37 Fuse & relay box (fb) (behind left side of dash) Fuse 10a Fuse 15a Fuse 20a Gb-4 (behind right side of dash) Hot at all times Hot in on or start I10 I11 I12 L/c timing solenoid Line end check connector Line pressure solenoid Main fuse box (mb) (left side of engine compt) 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 Speedo Stoplight switch (on brake pedal support) Throttle position sensor (on throttle body assembly) Transmission control module (tcm) Transmission control module (tcm) (behind left side of dash) Turbine speed sensor Vehicle speed sensor 1 Vehicle speed sensor 2
2.5L 2.5L, A/T Wiring Diagram for Subaru Impreza WRX 2003 List of elements for 2.5L, A/T Wiring Diagram for Subaru Impreza WRX 2003: 66 (behind right side of dash) (left side of dash) (left side of transmission) (right side of engine compt) dropping resistor (w/o cruise) (w/o cruise) (w/ cruise) 2-4b timing solenoid A/t control (transmission) A/t oil temp ind A30 A31 A=b134 b=b135 c=b136 Anti-lock brakes system Atf temperature sensor B152 B158 B16 B17 B40 B54 B55 C11 C15 C16 C17 Check connector b79 Combination meter Cpu Cruise control system Data link connector (left side of dash) Engine control module (ecm) (behind right side of dash) F37 Fuse & relay box (fb) (behind left side of dash) Fuse 10a Fuse 15a Fuse 20a Fwd ind Fwd switch (fuse) (w/ awd) (in relay holder) Gb-1 (right side of engine compt) Gb-4 Hot at all times Hot in on or start I10 I11 I12 Inhibitor switch L/c timing solenoid Line end check connector Main fuse box (mb) (left side of engine compt) Nca Red 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 line pressure Solenoid lock-up Speedometer Stoplight switch (on brake pedal support) Throttle position sensor (on throttle body assembly) Transmission control module (tcm) (behind left side of dash) Turbine speed sensor Vehicle speed sensor 1 Vehicle speed sensor 2
WARNING SYSTEMS Warning Systems Wiring Diagram for Subaru Impreza WRX 2003 List of elements for Warning Systems Wiring Diagram for Subaru Impreza WRX 2003: 26 (on left side of engine compt) 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 15a Fuse 6 15a Gb-2 (near the left headlight) Gb-6 (under left front of center console) Hot at all times Hot in on or start I10 I11 Integrated module (behind left side of dash) Key warning switch Left front door switch Main fuse box (m/b) Seat belt switch Seat belt warning light ind
WIPER/WASHER Front Wiper/Washer Wiring Diagram for Subaru Impreza WRX 2003 List of elements for Front Wiper/Washer Wiring Diagram for Subaru Impreza WRX 2003: 21 B158 Combination switch Front washer motor (on left side of engine compt, in washer fluid reservoir) Front wiper motor (on left side of firewall) Fuse & relay box (f/b) (behind left side of dash) Fuse 15 30a Gb-3 (near bottom of ``a" pillar) 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 2003 List of elements for Rear Wiper/Washer Wiring Diagram for Subaru Impreza WRX 2003: 20 (sedan: near license plate light) (wagon: right rear end of vehicle) 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 (neat bottom of ``a" pillar) Gb-8 (sedan: near license plate light) (wagon: right rear end of vehicle) Hot in acc or on Nca Off Park Rear washer motor (in washer fluid reservoir) Rear wiper intermittent module (at right side of cargo compt) Rear wiper motor (on center underside of rear gate) Rear wiper/ washer switch Run Wash Wiper motor
