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2003 Subaru Impreza CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Subaru REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Starter & Alternator Replacement
- Cabin Air Filter Locations & Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
A/C & HEATER SERVICE PROCEDURES FOR 2003 Subaru Impreza AUTOMOBILES
Air Bag System Precautions -> Subaru -> Arming
Vehicle: 2003 Subaru Impreza WRX 2.0 H4 GAS
- With ignition Off, connect battery positive cable, then battery ground cable.
- Wait at least 20 seconds.
- From a safe location at sides of or ...
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BRAKE SERVICE PROCEDURES FOR 2003 Subaru Impreza AUTOMOBILES
Subaru -> Disc Brakes -> Tightening Specifications
Vehicle: 2003 Subaru Impreza Outback 2.5 H4 GAS
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Subaru Impreza AUTOMOBILES
Subaru -> Fuel Filter Replacement -> Except Justy w/Carbureted Engine -> Fuel System Pressure Relief -> Removal & Installation
Vehicle: 2003 Subaru Impreza Outback 2.5 H4 GAS
Fuel System Pressure Relief
- On Impreza, SVX, 1990-94 Legacy models,fold down the rear seat back, then remove the floor mat and access hole lid.
- On 1995-00 Legacy models, remove the rear seat cushion and seat back, then the floor mat and access hole lid.
- On all models, disconnect the fuel pump relay electrical connector.
- Start the engine and operate until it stalls.
- After the engine has stalled, crank the engine for at least 5 seconds.
- Place the ignition switch in Off position.
- Disconnect the battery ground cable.
- Connect the fuel pump electrical connector.
- On...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Subaru Impreza AUTOMOBILES
CV AXLE SHAFT, Replace -> Front -> Rear
Vehicle: 2003 Subaru Impreza TS 2.5 H4 GAS
Front
- Disconnect battery ground cable.
- Raise and support vehicle and support it with safety stands in proper locations.
- Remove wheel nuts and front wheels.
- Unstake hub nut using suitable tool.
- Remove wheel hub locknut using suitable tool. Loosen and retighten axle nut after removing wheel from vehicle. Failure to follow this instruction may damage wheel bearings.
- Disconnect transverse link from housing.
- Remove spring pin which secures transmission spindle and install a new spring pin upon installation.
- Remove front driveshaft assembly. If driveshaft is hard to remove use suitable...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Subaru Impreza AUTOMOBILES
Alternator, Replace
Vehicle: 2003 Subaru Impreza RS 2.5 H4 GAS
- Disconnect ground cable from battery.
- Disconnect connector and terminal from alternator.
- Remove V-belt cover.
- Remove front side V-belt.
- Remove bolts w...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2003 Subaru Impreza AUTOMOBILES
Cabin Air Filter Service -> Subaru -> 1998-2002 Forester & 1999-2003 Impreza
Vehicle: 2003 Subaru Impreza Outback 2.5 H4 GAS
The cabin air filter should be replaced every 12 months or 7,500 miles.
- From under passenger's side of the instrument panel, remove two cabin air filter access cover to evaporator case retai...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Subaru Impreza AUTOMOBILES
Subaru -> Automatic Transmission (A/T) Fluid Temperature Indicator ->
Vehicle: 2003 Subaru Impreza RS 2.5 H4 GAS
The A/T fluid temperature lamp will turn on when ignition switch is placed in On position and should turn off after a few seconds. If lamp illuminates while driving, the vehicle should be pulled off the road and allowed to idle with transmission lever in Park until the lamp goes off. If the lamp goes off vehicle can ...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Subaru Impreza AUTOMOBILES
Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 2003 Subaru Impreza RS 2.5 H4 GAS
Inlet
- Disconnect battery ground cable.
- Drain cooling system into a suitable container by loosening drain plug of radiator.
- Reposition hose clamp at heater core.
- Remove hose from heater core.
- Reposition hose clamp at cylinder head.
- Remove hose from cylinder head.
- Remove hose from vehicle.
- Reverse procedur...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Subaru Impreza AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 Subaru Impreza Outback 2.5 H4 GAS
- Remove drive belt cover. Wipe off any oil or water on belt and pulley.
- Loosen lockbolt on slider bolt.
- Loosen slider bolt.
- ...
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COMPONENT LOCATION DIAGRAMS FOR 2003 Subaru Impreza AUTOMOBILES
Component location diagrams for most 2003 Subaru Impreza cars and light trucks sold in the U.S. from 1990+.
Cruise Control System Components Diagram for 2003 Subaru Impreza Outback 2.5 H4 GAS Components on diagram: |
Engine Components Diagram for 2003 Subaru Impreza Outback 2.5 H4 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 2003 Subaru Impreza AUTOMOBILES
OEM drawn wiring diagrams for most 2003 Subaru Impreza cars and light trucks sold in the U.S.
2003 Subaru Impreza Outback 2.5 H4 GAS Wiring Diagram Components on diagram: |
2003 Subaru Impreza RS 2.5 H4 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2003 Subaru Impreza AUTOMOBILES
OEM TSB listings for most 2003 Subaru Impreza cars and light trucks sold in the U.S. from 1985+.
Document: EVAPORATIVE EMISSION SYSTEM DIAGNOSTIC
INFORMATION Vehicle: 2003 Subaru Impreza Outback 2.5 H4 GAS Auto Systems: |
Document: Turbocharger Mesh Filter Screen Vehicle: 2003 Subaru Impreza WRX 2.0 H4 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2003 Subaru Impreza AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Subaru Impreza cars and light trucks sold in the U.S. and Canada from 1970+.
- Brake caliper mounting bolt torque
- Brake drum runout, machining, & discard specs
- Minimum brake lining thickness.
- Brake rotor runout, parallelism, machining, discard, & finish specs
A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 2003 Subaru Impreza cars and light trucks sold in the U.S. and Canada from 1980+.
- Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap
COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.
PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules
QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 2003 Subaru Impreza cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.
- Automatic transmission/transaxles capacities, lubricant recommendations
- Differential/final drive capacities, lube recommendations, grades, & viscosities
- Final drive fill & drain plug torques
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
- Severe service maintenance & interval recommendations
- Tire sizes, wheel nut/bolt torque, pressures & rim sizes
- Transfer case capacities, lube recommendations, grades, & viscosities
TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 2003 Subaru Impreza cars and light trucks sold in the U.S. and Canada from 1980+
- Airflow sensor electrical specifications
- Tensioning specifications for systems with automatic tensioners
- Barometric pressure sensor specs
- Battery group number and cranking performance
- Crankshaft & camshaft position sensor resistance
- Engine compression pressures
- Coolant temperature sensor specs
- Computer advance.
- Diesel fuel temperature sensor resistance.
- Distributor advance specifications
- Ignition pickup coil resistance
- Exhaust gas recirculation temperature sensor resistance
- Engine fastener torque values
- Firing order diagrams
- Fuel system pressures
- Generator (alternator) specs
- Intake air temperature sensor specs
- Ignition coil specifications
- Fuel injector resistance
- Engine idle speeds
- Knock sensor resistance
- Manifold absolute pressure sensor specs
- Mixture control solenoid resistance
- Voltage regulator specs
- Spark plug applications & gaps
- Starter motor electrical specs.
- Tensioning specifications for systems without automatic tensioners
- Throttle body temperature sensor resistance
- Ignition timing in degrees at rpm
- Transmission oil temperature sensor resistance
- Throttle position sensor specs
- Vacuum sensor valve specs
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