2003 Toyota Corolla REPAIR MANUAL -- HOW TO FIX YOUR CAR OR TRUCK

A/C & HEATER SERVICE PROCEDURES FOR 2003 Toyota Corolla AUTOMOBILES

Toyota -> Manual Air Conditioning & Heater System Diagnosis & Testing -> Troubleshooting -> 4-Door -> 5-Door -> A/C Indicator Does Not Light When Turning Mode Control Dial To DEF Position -> Air Inlet Door Inoperative On Two-Way Flow Position When Performing In These Conditions: Air Inlet Selector: FRESH, Blower Switch: ON, Temperature Control Selector: MAX. WARM, Mode Selector: FOOT OR FOOT/DEF (Two-Way Flow Heater) -> Avalon -> Blinking A/C Indicator -> Brightness Does Not Change When Lamp Control Switch Is Turned -> Camry & Camry Solara -> Celica -> Compressor Operates Intermittently -> Cool Air Comes Out Only At High Engine RPM -> Corolla, Corolla Matrix, Highlander & MR2 -> Echo -> Front A/C -> Insufficient Air Flow -> Insufficient Cooling -> No Air Flow Mode Control -> No Air Inlet Control -> No Air Inlet Control (Two-Way Flow Heater) -> No Air Outlet Control -> No Air Temperature -> No Air Temperature Control -> No Blower Control -> No Blower Operation -> No Blower Operation (Two-Way Flow Heater) -> No Compressor Operation -> No Condenser Fan Operation -> No Condenser Fan Operation (High Speed) -> No Condenser Fan Operation (Low Speed) -> No Condenser Fan Speed Change -> No Cool Air Comes Out -> No Engine Idle-Up When A/C Switch Is On -> No Engine Idle-Up With A/C Switch On -> No Mode Control -> No Temperature Control -> No Warm Air Comes Out -> PTC Heater Inoperative When Performing In These Conditions: Engine Coolant Temp: 140° or below, Engine Speed: 650 RPM Or Above, Temperature Control Selector: MAX. COOL (PTC HEATER) -> RAV4 -> Rear A/C -> Sequoia, Tacoma & Tundra -> Sienna
Vehicle: 2003 Toyota Corolla 1.8 L4 GAS

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BRAKE SERVICE PROCEDURES FOR 2003 Toyota Corolla AUTOMOBILES

Toyota -> Drum Brakes -> Adjustments -> 2WD -> 4WD -> Camry, Camry Solara, Celica, Corolla, Echo & Matrix -> Highlander -> Parking Brake -> Shoe Adjustment -> Tacoma -> Tacoma & Tundra -> Tundra
Vehicle: 2003 Toyota Corolla 1.8 L4 GAS

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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Toyota Corolla AUTOMOBILES

Toyota -> Fuel Filter Replacement -> 1998-06 Corolla & Matrix -> Fuel System Pressure Relief -> Models Less Union Bolt Fuel Line Connection -> Models w/Union Bolt Fuel Line Connection -> Removal & Installation
Vehicle: 2003 Toyota Corolla 1.8 L4 GAS

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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Toyota Corolla AUTOMOBILES

CV AXLE SHAFT, Replace
Vehicle: 2003 Toyota Corolla 1.8 L4 GAS

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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Toyota Corolla AUTOMOBILES

Alternator, Replace
Vehicle: 2003 Toyota Corolla 1.8 L4 GAS

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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2003 Toyota Corolla AUTOMOBILES

Cabin Air Filter Service -> Toyota -> 2003-09 Corolla & 2005-09 Avalon
Vehicle: 2003 Toyota Corolla 1.8 L4 GAS

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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Toyota Corolla AUTOMOBILES

Toyota -> Automatic Transmission Oil Temperature Warning Lamp ->
Vehicle: 2003 Toyota Corolla 1.8 L4 GAS

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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Toyota Corolla AUTOMOBILES

Coolant Hose, Replace -> Lower -> Upper
Vehicle: 2003 Toyota Corolla 1.8 L4 GAS

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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Toyota Corolla AUTOMOBILES

Serpentine Drive Belt, Replace
Vehicle: 2003 Toyota Corolla 1.8 L4 GAS

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COMPONENT LOCATION DIAGRAMS FOR 2003 Toyota Corolla AUTOMOBILES

Component location diagrams for most 2003 Toyota Corolla cars and light trucks sold in the U.S. from 1990+.

Power Door Lock Control System Location Diagram for 2003 Toyota Corolla 1.8 L4 GAS Components on diagram: Door Courtesy Lamp Switch Instrument Panel Junction Box Power Window Regulator Master Switch Assembly Integration Relay Door Lock Assembly

Electrical Wiring Routing Diagram for 2003 Toyota Corolla 1.8 L4 GAS Components on diagram: Personal Light Connector F8 Connector F9 Connector D8 Connector L3

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WIRING DIAGRAMS FOR 2003 Toyota Corolla AUTOMOBILES

OEM drawn wiring diagrams for most 2003 Toyota Corolla cars and light trucks sold in the U.S.

2003 Toyota Corolla 1.8 L4 GAS Wiring Diagram Components on diagram: Battery Ignition Switch Ignition Relay Engine Control Module EFI Relay

2003 Toyota Corolla 1.8 L4 GAS Wiring Diagram Components on diagram: Turn Switch Battery Ignition Switch Ignition Relay Hazard Switch

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TECHNICAL SERVICE BULLETINS FOR 2003 Toyota Corolla AUTOMOBILES

OEM TSB listings for most 2003 Toyota Corolla cars and light trucks sold in the U.S. from 1985+.

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COMPONENT/PARTS SPECIFICATIONS FOR 2003 Toyota Corolla AUTOMOBILES

BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Toyota Corolla 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 Corolla 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 Corolla 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 Corolla 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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