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2003 Toyota Sienna 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
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- A/C & Heater Service
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Tire Pressure Monitoring System
- Starter & Alternator 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 Sienna 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 Sienna automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 2003 Toyota Sienna AUTOMOBILES
Electrical Symbol & Wire Color Code Identification -> Wire Color Code Identification -> Imported Vehicles
Vehicle: 2003 Toyota Sienna 3.0 V6 GAS
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BRAKE SERVICE PROCEDURES FOR 2003 Toyota Sienna 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 Sienna 3.0 V6 GAS
Parking Brake
Camry, Camry Solara, Celica, Corolla, Echo & Matrix
- Apply parking brake and count number of notches on parking brake sector. Specified number of notches should be as follows:
- On Camry, Camry Solara, Corolla, Echo and Matrix models, 5-8 clicks.
- On Celica models, 4-7 clicks.
- On all models, remove console box.
- Loosen locknut and turn adjustment screw until lever travel is correct.
- Tighten locknut and install console.
Highlander
- Slowly press parking brake pedal all the way down and count number of clicks. If parking brake pedal does not click 5-7 times, proceed to next step to adju...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Toyota Sienna AUTOMOBILES
Toyota -> Fuel Filter Replacement -> 1998-03 Sienna -> Fuel System Pressure Relief -> Models Less Union Bolt Fuel Line Connection -> Models w/Union Bolt Fuel Line Connection -> Removal & Installation
Vehicle: 2003 Toyota Sienna 3.0 V6 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 prot...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Toyota Sienna AUTOMOBILES
DRIVESHAFT, Replace
Vehicle: 2003 Toyota Sienna 3.0 V6 GAS
- Raise and support vehicle.
- Remove exhaust pipe.
- Have an assistant depress and hold brake pedal.
- Loosen the cross groove joint set bolts a 1/2 turn.
- Place reference marks on both flanges.
- Remove nuts, bolts and washers at flanges.
- Remove bolts and adjusting shims from...
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TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR 2003 Toyota Sienna AUTOMOBILES
Description
Vehicle: 2003 Toyota Sienna 3.0 V6 GAS
If the TPMS (Tire Pressure Monitor System) warning system detects a drop in the tire inflation pressure while the vehicle is operated, the TPMS ECU (Electronic Control Unit) turns on the low tire pressure warning lamp in the instrument cluster to warn the driver. The...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Toyota Sienna AUTOMOBILES
Alternator, Replace
Vehicle: 2003 Toyota Sienna 3.0 V6 GAS
- Disconnect battery ground cable.
- Loosen alternator pivot bolt, adjusting lock bolt and adjusting bolt, then remove alternator be...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Toyota Sienna AUTOMOBILES
Toyota -> Anti-Lock Brake System (ABS)/Vehicle Stability Control (VSC) System Warning Lamp -> 2003-09 Sienna
Vehicle: 2003 Toyota Sienna 3.0 V6 GAS
The anti-lock warning lamp is used to warn of a system fault. The lamp will be lit during engine start-up, but should go out when the self-diagnostic system verifies proper anti-lock operation. If the lamp remains lit, a fault in the anti-lock brake system is indicated. After system diagnosis and repair are complete, the lamp c...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Toyota Sienna AUTOMOBILES
Heater Hose, Replace -> Bypass -> Inlet -> Outlet
Vehicle: 2003 Toyota Sienna 3.0 V6 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 water outlet.
- Remove hose from water outlet.
- Remove hose from vehicle.
- Reverse procedure to install.
Outlet
- Disconnect battery ground cable.
- Drain cooling system into a suitable container by loosening drain plug of radiator.
- Reposition hose clamp a...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Toyota Sienna AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 Toyota Sienna 3.0 V6 GAS
- Rotate or lift the belt tensioner arm, using a suitable tool to relieve tension from dr...
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COMPONENT LOCATION DIAGRAMS FOR 2003 Toyota Sienna AUTOMOBILES
Component location diagrams for most 2003 Toyota Sienna cars and light trucks sold in the U.S. from 1990+.
 Ignition Switch And Key Unlock Warning Switch Diagram for 2003 Toyota Sienna 3.0 V6 GASComponents on diagram: |
 Garage Door Opener Components Diagram for 2003 Toyota Sienna 3.0 V6 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 2003 Toyota Sienna AUTOMOBILES
OEM drawn wiring diagrams for most 2003 Toyota Sienna cars and light trucks sold in the U.S.
 2003 Toyota Sienna 3.0 V6 GAS Wiring DiagramComponents on diagram: |
 2003 Toyota Sienna 3.0 V6 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2003 Toyota Sienna AUTOMOBILES
OEM TSB listings for most 2003 Toyota Sienna cars and light trucks sold in the U.S. from 1985+.
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Document: LONG TERM VEHICLE STORAGE GUIDELINES Vehicle: 2003 Toyota Sienna 3.0 V6 GAS Auto Systems: |
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Document: UPPER/LOWER WINDSHIELD/REAR GLASS TICK NOISE - REVISED Vehicle: 2003 Toyota Sienna 3.0 V6 GAS Symptoms: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2003 Toyota Sienna AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Toyota Sienna 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 Sienna 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 Sienna 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 Sienna 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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