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2003 Toyota Sequoia 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
- 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 Sequoia 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 Sequoia automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 2003 Toyota Sequoia AUTOMOBILES
Electrical Symbol & Wire Color Code Identification -> Electrical Symbol Identification -> Imported Vehicles
Vehicle: 2003 Toyota Sequoia 4.7 V8 GAS
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BRAKE SERVICE PROCEDURES FOR 2003 Toyota Sequoia AUTOMOBILES
Toyota -> Front Disc Brakes -> Precautions -> Audio Coded Anti-Theft System
Vehicle: 2003 Toyota Sequoia 4.7 V8 GAS
Audio Coded Anti-Theft System
Some models are equipped with an audio coded anti-theft system that will disable the radio when the battery cable is disconnected. The system can be identified by the "ANTI-THEFT SYSTEM" on the cassette tape lid. Obtain 3 digit customer code for input. Reset system after service as follows:
- Obtain 3 digit audio anti-theft code.
- Depress 1 (PROG) while depressing righthand side of TUNE SEEK button, - - - will appear in tape operation display.
- To enter the first digit, depress 1 (PROG) button repeatedly until the number of times depressed equals the first digit ...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Toyota Sequoia AUTOMOBILES
Toyota -> Fuel Filter Replacement -> Land Cruiser, Pickup, Previa, Sequoia, Tacoma, Tundra, T100, Truck & Van -> Fuel System Pressure Relief -> Models Less Union Bolt Fuel Line Connection -> Models w/Union Bolt Fuel Line Connection -> Removal & Installation
Vehicle: 2003 Toyota Sequoia 4.7 V8 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...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Toyota Sequoia AUTOMOBILES
CV AXLE SHAFT, Replace
Vehicle: 2003 Toyota Sequoia 4.7 V8 GAS
- Raise and support vehicle.
- Remove wheel and tire assembly.
- Remove engine under-cover.
- Drain differential oil.
- Remove drive shaft lock nut grease cap, using a screwdriver and hammer.
- Remove cotter pin and lock cap from drive shaft lock nut.
- With an assistant applying brakes, remove drive shaft lock nut.
- Remove cotter pin and nut from lower ball joint.
- Disconnect lower suspension arm, using a suitable pry tool.
- Disconnect drive shaft from hub by pushing steering knuckle outward. Be careful not to damage oil seal, bo...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Toyota Sequoia AUTOMOBILES
Alternator, Replace
Vehicle: 2003 Toyota Sequoia 4.7 V8 GAS
- Remove engine under cover.
- Remove throttle body cover.
- Disconnect battery ground cable (-) from battery terminal.
- Disconnect intake air connector from throttle body.
- Loosen belt tension by turning belt tensioner counterclockwise, and remove drive belt. Pulley bolt for belt tensioner has a left hand thread.
- Remove power steering vane pump from engine.
- Disconnect alternator...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Toyota Sequoia AUTOMOBILES
Toyota -> Low Oil Level Warning Indicator ->
Vehicle: 2003 Toyota Sequoia 4.7 V8 GAS
This lamp lights to indicate that the engine oil level is below a specified level. The lamp will be illuminated during engine start-up. If...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Toyota Sequoia AUTOMOBILES
Radiator, Replace
Vehicle: 2003 Toyota Sequoia 4.7 V8 GAS
- Remove engine under cover, then drain engine coolant into a suitable container.
- Disconnect radiator reservoir hose from radiator, then radiator upper hose from radiator.
- Disconnect radiator lower hose from radiator, then automatic transmission oil cooler hoses from radiator.
- Remove No. 2 fan shroud, then radiator and No. 1 fan shroud.
- On all models, remove radiator reservoir tank, then automatic transmission oil cooler hoses from...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Toyota Sequoia AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 Toyota Sequoia 4.7 V8 GAS
- Remove V-Bank cover subassembly.
- Remove bolts from engine under cover assembly, then remove cover.
- Rotate or lift belt tensioner arm counterclockwise, using a suitable tool to...
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COMPONENT LOCATION DIAGRAMS FOR 2003 Toyota Sequoia AUTOMOBILES
Component location diagrams for most 2003 Toyota Sequoia cars and light trucks sold in the U.S. from 1990+.
 Power Source Diagram for 2003 Toyota Sequoia 4.7 V8 GASComponents on diagram: |
 Trailer Towing Components Diagram for 2003 Toyota Sequoia 4.7 V8 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 2003 Toyota Sequoia AUTOMOBILES
OEM drawn wiring diagrams for most 2003 Toyota Sequoia cars and light trucks sold in the U.S.
 2003 Toyota Sequoia 4.7 V8 GAS Wiring DiagramComponents on diagram: |
 2003 Toyota Sequoia 4.7 V8 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2003 Toyota Sequoia AUTOMOBILES
OEM TSB listings for most 2003 Toyota Sequoia cars and light trucks sold in the U.S. from 1985+.
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Document: A340 TRANSMISSION SOLENOID IDENTIFICATION Vehicle: 2003 Toyota Sequoia 4.7 V8 GAS Auto Systems: |
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Document: LONG TERM VEHICLE STORAGE GUIDELINES Vehicle: 2003 Toyota Sequoia 4.7 V8 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2003 Toyota Sequoia AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Toyota Sequoia 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 Sequoia 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 Sequoia 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 Sequoia 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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