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2003 Toyota Prius CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Toyota 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
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- A/C & Heater 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
Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2003 Toyota Prius car and truck
repair procedures including Toyota engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work
guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up &
drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install
procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c
system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix
your Toyota Prius automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 2003 Toyota Prius AUTOMOBILES
Imported Cars & Light Trucks & Vans -> 2003-04 -> Refrigerant Recovery
Vehicle: 2003 Toyota Prius 1.5 L4 ELECTRIC/GAS
R-134a systems require the use of special service equipment designed specifically for R-134a systems. R-12 servicing equipment cannot be used on R-134a systems.
R-12 recovery stations cannot be used on R-134a systems. A separate recovery station must be used on R-134a systems. The refrigerants are not compatible and will contaminate the R-12 recovery station.
The use of refrigerant recovery and recycling stations allows the recovery and reuse of refrigerant after contaminants and moisture have been removed.
When using a recovery or recycling station...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Toyota Prius AUTOMOBILES
Toyota -> Fuel Filter Replacement -> Echo, Prius & Yaris -> Fuel System Pressure Relief -> Models Less Union Bolt Fuel Line Connection -> Models w/Union Bolt Fuel Line Connection -> Removal & Installation
Vehicle: 2003 Toyota Prius 1.5 L4 ELECTRIC/GAS
Fuel System Pressure Relief
Models w/Union Bolt Fuel Line Connection
- Obtain the vehicle owners radio theft protection code prior to disconnecting the battery ground cable, if equipped.
- Disconnect the battery ground cable.
- Remove the fuel fill cap to release fuel tank pressure.
- Place a shop towel over the union bolt at top of fuel filter. Slowly loosen the union bolt allowing fuel pressure to bleed down.
- Whenever the union bolt is loosened to relieve fuel system pressure, always replace the bolt gasket.
Models Less Union Bolt Fuel Line Connection
- Obtain the vehicle owners radio theft...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Toyota Prius AUTOMOBILES
CV AXLE SHAFT, Replace
Vehicle: 2003 Toyota Prius 1.5 L4 ELECTRIC/GAS
- Raise and support vehicle.
- Remove front wheel and drive shaft locknut, Fig. .
- Remove ABS speed sensor and wire harness from steering knuckle.
- Remove bolt, then the brake line clamp from steering knuckle.
- Remove bolts, then the brake caliper and disc. Support brake caliper securely.
- Remove shock absorber lower side set nut and washer, then pry down lower suspension arm, remove bolt and disconnect shock absorber.
- Remove three nuts and shock absorber with ...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Toyota Prius AUTOMOBILES
Alternator, Replace
Vehicle: 2003 Toyota Prius 1.5 L4 ELECTRIC/GAS
This vehicle is not equipped with an alt...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2003 Toyota Prius AUTOMOBILES
Cabin Air Filter Service -> Toyota -> 2001-03 Prius
Vehicle: 2003 Toyota Prius 1.5 L4 ELECTRIC/GAS
Under normal operating conditions the cabin air filter should be replaced every 22,500 miles. In dusty areas change the cabin air filter every 10,000 miles.
- Open the glove compartment door.
- Remove the two glove compartment pins, then pull the glove compartment downward, Fig. .
- Through the glove compartment opening, remove the filter housing from the fil...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Toyota Prius AUTOMOBILES
Toyota -> Malfunction Indicator Lamp (MIL) ->
Vehicle: 2003 Toyota Prius 1.5 L4 ELECTRIC/GAS
On some models equipped with OBD II, the MIL will also illuminate if the fuel tank filler cap is not properly tightened. Tighten fuel tank filler cap until it clicks.
The MIL should light when the ignition switch is placed in the On position without starting the engine. When the engine is started, the lamp should go out. If it remains lit, a fault has been detected by the diagnostic system and has logged a diagnostic trouble code. If the fault does not occur again within three trips, the lamp will go out but a diagnostic tro...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Toyota Prius AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 2003 Toyota Prius 1.5 L4 ELECTRIC/GAS
Lower
- Disconnect battery ground cable.
- Drain cooling system into a suitable container by loosening drain plug of radiator.
- Reposition hose clamp at radiator outlet.
- Remove hose from radiator.
- Reposition hose clamp at water inlet.
- Remove hose from water inlet.
- Remove hose from vehicle.
- Reverse procedure t...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Toyota Prius AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 Toyota Prius 1.5 L4 ELECTRIC/GAS
- Remove righthand bolts from engine cover assembly, then remove cover.
- Remove air cleaner inlet hose by loosing clamp.
- Loosen nut from on belt tensioner.
- Rotate or lift belt tensioner arm bolt counter...
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COMPONENT LOCATION DIAGRAMS FOR 2003 Toyota Prius AUTOMOBILES
Component location diagrams for most 2003 Toyota Prius cars and light trucks sold in the U.S. from 1990+.
 Instrument Panel Diagram for 2003 Toyota Prius 1.5 L4 ELECTRIC/GASComponents on diagram: |
 Cruise Control System Diagram for 2003 Toyota Prius 1.5 L4 ELECTRIC/GASComponents on diagram: |
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WIRING DIAGRAMS FOR 2003 Toyota Prius AUTOMOBILES
OEM drawn wiring diagrams for most 2003 Toyota Prius cars and light trucks sold in the U.S.
 2003 Toyota Prius 1.5 L4 ELECTRIC/GAS Wiring DiagramComponents on diagram: |
 2003 Toyota Prius 1.5 L4 ELECTRIC/GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2003 Toyota Prius AUTOMOBILES
OEM TSB listings for most 2003 Toyota Prius cars and light trucks sold in the U.S. from 1985+.
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Document: MIL "ON" DTC P3101, P3190 and/or P3191 Vehicle: 2003 Toyota Prius 1.5 L4 ELECTRIC/GAS Auto Systems: |
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Document: LONG TERM VEHICLE STORAGE GUIDELINES Vehicle: 2003 Toyota Prius 1.5 L4 ELECTRIC/GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2003 Toyota Prius AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Toyota Prius 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 Toyota Prius 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 Toyota Prius 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 Toyota Prius 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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