Auto Parts Search
2003 Subaru Legacy CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Subaru REPAIR SHOPS DON'T WANT YOU TO KNOW
Learn how to repair a car or truck, install or remove parts, wire an engine, reset warning lights, replace fuel filter, fix auto body and more. Get Automotix DIY!Select Section
- 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 Legacy AUTOMOBILES
Subaru -> Component Replacement & Adjustment -> Cabin Air Filter, Replace -> Legacy & Outback
Vehicle: 2003 Subaru Legacy 2.5 H4 GAS
Legacy & Outback
- Remove glove compartment door stoppers, then the door hinge screws, Fig. .
- Remove glove compartment retaining screws and clips.
- Disconnect blower resistor conne...
CLICK HERE TO GET FULL ACCESS TO 2003 Subaru Legacy A/C & HEATER SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 2003 Subaru Legacy AUTOMOBILES
Subaru -> Disc Brakes -> Brake Pad Service -> Front -> Rear
Vehicle: 2003 Subaru Legacy 2.5 H4 GAS
Front
- Raise and support vehicle.
- Remove front wheels.
- Disconnect brake hose from strut.
- Remove caliper lockpin, then rotate caliper on guide pin, Figs. through .
- Remove brake pads from support.
- Reverse procedure to install noting the following:
- Push piston into caliper body. When piston is difficult to insert, loosen the air bleeder, then push into place.
- Refer to Figs. through for tightening values.
- After completing installation, depress brake pedal several times to seat brake pads against rotor. If pedal stroke is excessive, bleed hydraulic ...
CLICK HERE TO GET FULL ACCESS TO 2003 Subaru Legacy BRAKE SERVICE PROCEDURES
FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Subaru Legacy AUTOMOBILES
Subaru -> Fuel Filter Replacement -> Except Justy w/Carbureted Engine -> Fuel System Pressure Relief -> Removal & Installation
Vehicle: 2003 Subaru Legacy 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...
CLICK HERE TO GET FULL ACCESS TO 2003 Subaru Legacy FUEL FILTER REPLACEMENT PROCEDURES
DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Subaru Legacy AUTOMOBILES
DRIVESHAFT, Replace
Vehicle: 2003 Subaru Legacy 2.5 H4 GAS
Wrap metal parts with a cloth or rubber material. Rubber boot may be damaged due to interference with adjacent metal parts during removal.
- Disconnect battery ground cable.
- Place vehicle in neutral.
- Release parking brake.
- Raise and support vehicle and support it with safety stands in proper locations.
- Remove center exhaust pipes bolts and nuts.
- Remove rear exhaust pipe and muffler.
- Remove heat shield cover.
- Place reference mark on front driveline and rear differential flange. Paint is recommended for match marks. Never damage rear driveline shaft flange yoke or companion flange
- Remove...
CLICK HERE TO GET FULL ACCESS TO 2003 Subaru Legacy DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES
STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Subaru Legacy AUTOMOBILES
Starter, Replace
Vehicle: 2003 Subaru Legacy 2.5 H4 GAS
- Disconnect battery ground cable.
- Disconnect solenoid wiring at starter.
- Remo...
CLICK HERE TO GET FULL ACCESS TO 2003 Subaru Legacy STARTER & ALTERNATOR REPLACEMENT PROCEDURES
CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2003 Subaru Legacy AUTOMOBILES
Cabin Air Filter Service -> Subaru -> 1998-2004 Legacy, Outback & 2003-04 Baja
Vehicle: 2003 Subaru Legacy 2.5 H4 GAS
The cabin air filter should be replaced every 12 months or 9,300 ...
CLICK HERE TO GET FULL ACCESS TO 2003 Subaru Legacy CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES
MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Subaru Legacy AUTOMOBILES
Subaru -> All Wheel Drive (AWD) System Warning Lamp ->
Vehicle: 2003 Subaru Legacy 2.5 H4 GAS
The AWD warning lamp, will illuminate for a few seconds when the ignition switch is placed in the on position as a bulb check. The lamp should go off when the engine is started. The lamp will illuminate when AWD is disen...
CLICK HERE TO GET FULL ACCESS TO 2003 Subaru Legacy MAINTENANCE LAMP RESET PROCEDURES
RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Subaru Legacy AUTOMOBILES
Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 2003 Subaru Legacy 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...
CLICK HERE TO GET FULL ACCESS TO 2003 Subaru Legacy RADIATOR & HOSE REPLACEMENT PROCEDURES
SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Subaru Legacy AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 Subaru Legacy 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.
- ...
CLICK HERE TO GET FULL ACCESS TO 2003 Subaru Legacy SERPENTINE BELT SERVICE PROCEDURES
COMPONENT LOCATION DIAGRAMS FOR 2003 Subaru Legacy AUTOMOBILES
Component location diagrams for most 2003 Subaru Legacy cars and light trucks sold in the U.S. from 1990+.
Sensors Diagram for 2003 Subaru Legacy 2.5 H4 GAS Components on diagram: |
Bulkhead Wiring Harness Diagram for 2003 Subaru Legacy 2.5 H4 GAS Components on diagram: |
CLICK HERE TO GET FULL ACCESS TO 2003 Subaru Legacy PARTS/COMPONENTS LOCATION DIAGRAMS!
WIRING DIAGRAMS FOR 2003 Subaru Legacy AUTOMOBILES
OEM drawn wiring diagrams for most 2003 Subaru Legacy cars and light trucks sold in the U.S.
2003 Subaru Legacy 2.5 H4 GAS Wiring Diagram Components on diagram: |
2003 Subaru Legacy 2.5 H4 GAS Wiring Diagram Components on diagram: |
CLICK HERE TO GET FULL ACCESS TO 2003 Subaru Legacy WIRING DIAGRAMS!
TECHNICAL SERVICE BULLETINS FOR 2003 Subaru Legacy AUTOMOBILES
OEM TSB listings for most 2003 Subaru Legacy cars and light trucks sold in the U.S. from 1985+.
Document: Service Manual Corrections Vehicle: 2003 Subaru Legacy 2.5 H4 GAS Auto Systems: |
Document: EVAPORATIVE EMISSION SYSTEM DIAGNOSTIC
INFORMATION Vehicle: 2003 Subaru Legacy 2.5 H4 GAS Auto Systems: |
CLICK HERE TO GET FULL ACCESS TO 2003 Subaru Legacy TECHNICAL SERVICE BULLETINS!
COMPONENT/PARTS SPECIFICATIONS FOR 2003 Subaru Legacy AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Subaru Legacy 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 Legacy 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 Legacy 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 Legacy 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
CLICK HERE TO GET FULL ACCESS TO 2003 Subaru Legacy SPECIFICATIONS DATA!
Shop online for auto body parts, engines, wheels, lights...
More parts |
Get the Complete Technical Service Bulletins! |
Access diagrams and repair information such as wiring diagrams, diagnosis and repair charts, manufacturer service bulletins, and OEM Part numbers of your 2003 Subaru Legacy vehicle. |
Access the Complete guide! |