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2003 Lexus SC430 CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Lexus 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
Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2003 Lexus SC430 car and truck
repair procedures including Lexus 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 Lexus SC430 automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 2003 Lexus SC430 AUTOMOBILES
Electrical Symbol & Wire Color Code Identification -> Wire Color Code Identification -> Imported Vehicles
Vehicle: 2003 Lexus SC430 4.3 V8 GAS
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BRAKE SERVICE PROCEDURES FOR 2003 Lexus SC430 AUTOMOBILES
Lexus -> Power Brake Units -> Power Brake Unit Service -> Brake Booster Overhaul -> Brake Booster, Replace -> ES300 & ES330 -> Installation -> IS300 -> LS430 -> LX470 -> Removal -> RX300 & RX330
Vehicle: 2003 Lexus SC430 4.3 V8 GAS
Brake Booster, Replace
ES300 & ES330
Removal
- Remove master cylinder as outlined under .
- Remove charcoal vapor canister as required.
- Remove brake booster vacuum hose.
- Remove pedal return spring, clip, clevis pin and clevis locknut, Fig. .
- Remove brake booster nuts. Pull out booster and gasket.
Installation
- Adjust length of booster pushrod as follows:
- Install gasket on master cylinder.
- Install brake booster pushrod gauge tool No. 09737-00010, or equivalent, on gasket.
- Lower pin until its tip slightly touches the piston.
- Turn gauge tool upside down and set it on booster.
- Measure clearan...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Lexus SC430 AUTOMOBILES
Lexus -> Fuel Filter Replacement -> GS430, LS430, SC430 & 1998-06 GS300 -> Fuel System Pressure Relief -> Removal & Installation
Vehicle: 2003 Lexus SC430 4.3 V8 GAS
Fuel System Pressure Relief
- Remove the rear seat cushion.
- Remove the carpeting to access floor service hole cover.
- Disconnect the fuel pump electrical connector.
- Start the engine and let it idle until it stalls, then turn ignition OFF.
- Disconnect the battery ground cable.
Removal & Installation
Do not smoke or allow an open flame of any type when working on or near any fuel system related components. The highly flammable vapor mixtu...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Lexus SC430 AUTOMOBILES
CV AXLE SHAFT, Replace -> Front -> Rear
Vehicle: 2003 Lexus SC430 4.3 V8 GAS
Front
- Raise and support vehicle and support it with safety stands in proper locations.
- Remove wheel nuts and front wheels.
- Remove bolts and remove disc brake cylinder from steering knuckle.
- Support brake caliper assembly with mechanics wire.
- Remove front disc brake rotor.
- Remove lefthand front hub bolt using suitable tool.
- Reverse procedure to install noting the following:
- Torque disc brake caliper bolts to 76 ft. lbs.
- Torque wheel lug nuts to 76 ft. lbs.
Rear
- Raise and support vehicle and support it with safety stands in proper locations.
- Remove wheel nuts and rear w...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Lexus SC430 AUTOMOBILES
Alternator, Replace
Vehicle: 2003 Lexus SC430 4.3 V8 GAS
- Disconnect battery ground cable.
- Remove air cleaner inlet and V-bank cover.
- Remove fan and alternator drive belt.
- Remove engine under cover.
- Remove power steering pump pulley using suitable tool.
- Disconnect alternator electrical connectors.
- Remove rubber cap and nut, then disconnect a...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2003 Lexus SC430 AUTOMOBILES
Cabin Air Filter Service -> Lexus -> 2003-09 SC430
Vehicle: 2003 Lexus SC430 4.3 V8 GAS
Under normal operating conditions the cabin air filter should be replaced every 12 months or 10,000 miles. In dusty areas change the cabin air filter more often.
- Open the glove compartment.
- On 2003-07 models, remove the two retainer pins located at the upper inside part of the glove compartment using a suitable pair of pliers, then lower then the glove compartment.
- On all models, through the glove compartment opening, disengage t...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Lexus SC430 AUTOMOBILES
Lexus -> Low Oil Level Warning Indicator ->
Vehicle: 2003 Lexus SC430 4.3 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 Lexus SC430 AUTOMOBILES
Radiator, Replace
Vehicle: 2003 Lexus SC430 4.3 V8 GAS
- Remove engine under cover and drain coolant into suitable container, Fig. .
- Remove air cleaner inlet.
- Remove radiator reserve tank.
- Remove engine cover.
- Remove...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Lexus SC430 AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 Lexus SC430 4.3 V8 GAS
- Remove bolts from air cleaner inlet.
- Rotate or lift belt tensioner arm counterclockwise, using a suitable tool to relieve tension from dri...
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COMPONENT LOCATION DIAGRAMS FOR 2003 Lexus SC430 AUTOMOBILES
Component location diagrams for most 2003 Lexus SC430 cars and light trucks sold in the U.S. from 1990+.
 Ground Electrical Wiring Routing Diagram for 2003 Lexus SC430 4.3 V8 GASComponents on diagram: |
 Ground Electrical Wiring Routing Diagram for 2003 Lexus SC430 4.3 V8 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 2003 Lexus SC430 AUTOMOBILES
OEM drawn wiring diagrams for most 2003 Lexus SC430 cars and light trucks sold in the U.S.
 2003 Lexus SC430 4.3 V8 GAS Wiring DiagramComponents on diagram: |
 2003 Lexus SC430 4.3 V8 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2003 Lexus SC430 AUTOMOBILES
OEM TSB listings for most 2003 Lexus SC430 cars and light trucks sold in the U.S. from 1985+.
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Document: REPAIR MANUAL SUPPLEMENT: VEHICLE PULLING TO ONE SIDE - REVISED Vehicle: 2003 Lexus SC430 4.3 V8 GAS Symptoms: |
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Document: TIRE INFLATION PRESSURE COMPENSATION AND ADJUSTMENT Vehicle: 2003 Lexus SC430 4.3 V8 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2003 Lexus SC430 AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Lexus SC430 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 Lexus SC430 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 Lexus SC430 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 Lexus SC430 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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