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2003 Volkswagen Jetta CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Volkswagen 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 Volkswagen Jetta car and truck
repair procedures including Volkswagen 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 Volkswagen Jetta automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 2003 Volkswagen Jetta AUTOMOBILES
Electrical Symbol & Wire Color Code Identification -> Electrical Symbol Identification -> Imported Vehicles
Vehicle: 2003 Volkswagen Jetta TDI 1.9 L4 DIESEL
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BRAKE SERVICE PROCEDURES FOR 2003 Volkswagen Jetta AUTOMOBILES
Anti-lock Brakes -> Diagnosis & Testing -> Accessing Diagnostic Trouble Codes -> Bosch 5 -> Bosch 5.3 -> Clearing Diagnostic Trouble Codes -> Diagnostic Tests -> Diagnostic Trouble Code Interpretation -> ITT Mark 20 IE -> Testing -> Teves Type 04 -> Teves Type 20
Vehicle: 2003 Volkswagen Jetta GL 2.0 L4 GAS
Accessing Diagnostic Trouble Codes
The ABS control unit has a permanent fault memory. If fault conditions occur at electrically monitored sensors or components they are stored in memory.
Faults are stored with varying priorities. Solenoid faults have the highest priority and are displayed first. Faults which occur occasionally or sporadic faults have the lowest priority and are displayed last.
Do not drive vehicle with VAG 1551 or equivalent scan tool connected.
- Connect a suitable scan tool to the Diagnostic Link Connector (DLC). Refer to Figs. through , for DLC locations and t...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Volkswagen Jetta AUTOMOBILES
Volkswagen -> Fuel Filter Replacement -> Gasoline Engines -> Models w/Fitting Or Union Bolt Connection -> Models w/Fuel Hose Connection
Vehicle: 2003 Volkswagen Jetta GL 2.0 L4 GAS
Models w/Fuel Hose Connection
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 mixtures may ignite, resulting in serious personal injury.
After the battery has been disconnected and reconnected, some abnormal driveabilty symptoms may occur. The vehicle may need to be driven while the vehicle relearns its adaptive strategy.
- Obtain the vehicle owners radio theft protection code prior to disconnecting the battery ground cable.
- Disconnect the battery ground cable.
- On models equipped with underbody moun...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Volkswagen Jetta AUTOMOBILES
CV AXLE SHAFT, Replace
Vehicle: 2003 Volkswagen Jetta GLS 1.8 L4 GAS
- Remove drive axle retaining nut while vehicle is still on ground.
- Raise and support vehicle, then remove tire and wheel.
- Mark position of bolts attaching ball joints to control arms, then remove bolts and separate ball joint from control arm. Discard bolts.
- Remove drive axle to transaxle drive flange attaching bolts.
- Mount a suitable puller tool onto hub assembly and press axle shaft out of hub. Do not flex CV or tripod joints more than 25° from their original angles.
- On models equipped with automatic transaxle,remove pendulum support mounting bolts, Fig. .
- Push engine and tran...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Volkswagen Jetta AUTOMOBILES
Alternator, Replace
Vehicle: 2003 Volkswagen Jetta GLS 2.0 L4 GAS
- Disconnect wiring connectors from alternator.
- Remove serpentine drive belt, using a suitable removal tool.
- Remove alternator mounting bolts, then the alternator.
- Remove serpentine belt pulley using suitable ...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2003 Volkswagen Jetta AUTOMOBILES
Cabin Air Filter Service -> Volkswagen -> 1993-2004 Golf, GTI & Jetta
Vehicle: 2003 Volkswagen Jetta GLS 1.8 L4 GAS
On 1993-96 models, the cabin air filter should be replaced every 15,000 miles.
On 1997-2003 models, the cabin air filter should be replaced every 10,000 miles.
On 2004 models, the cabin air filter should be replaced every 24 months or 20,000 miles.
- Open the hood.
- Remove the righthand plenum cover fasteners, then the cover.
- Remove the air deflector, if equipped.
- Press the cabin air filter housing clips downward, then remove the cabin air ...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Volkswagen Jetta AUTOMOBILES
Volkswagen -> Air Bag Warning Lamp ->
Vehicle: 2003 Volkswagen Jetta GLX 2.8 V6 GAS
If the Air Bag warning lamp lights and stays on, diagnosis and ...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Volkswagen Jetta AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 2003 Volkswagen Jetta GLI 2.8 V6 GAS
Lower
- Drain coolant into a suitable container.
- Reposition hose clamp at radiator and remove hose.
- Reposition hose clamp at thermostat housing and remove hose.
- Remove hose from vehicle.
- Reverse procedu...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Volkswagen Jetta AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 Volkswagen Jetta GLI 2.8 V6 GAS
- Put lock carrier into service position.
- Mark direction of engine rotation on belt.
- Slacken belt by tur...
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COMPONENT LOCATION DIAGRAMS FOR 2003 Volkswagen Jetta AUTOMOBILES
Component location diagrams for most 2003 Volkswagen Jetta cars and light trucks sold in the U.S. from 1990+.
 Alarm Horn Diagram for 2003 Volkswagen Jetta TDI 1.9 L4 DIESELComponents on diagram: |
 Fresh Air Intake Duct Temperature Sensor Diagram for 2003 Volkswagen Jetta GL 2.0 L4 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 2003 Volkswagen Jetta AUTOMOBILES
OEM drawn wiring diagrams for most 2003 Volkswagen Jetta cars and light trucks sold in the U.S.
 2003 Volkswagen Jetta TDI 1.9 L4 DIESEL Wiring DiagramComponents on diagram: |
 2003 Volkswagen Jetta GL 1.8 L4 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2003 Volkswagen Jetta AUTOMOBILES
OEM TSB listings for most 2003 Volkswagen Jetta cars and light trucks sold in the U.S. from 1985+.
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Document: Radio, Entering and Retrieving Anti-Theft (SAFE) Code Vehicle: 2003 Volkswagen Jetta GL 2.0 L4 GAS Auto Systems: |
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Document: Oil Consumption Measurement Vehicle: 2003 Volkswagen Jetta GL 2.0 L4 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2003 Volkswagen Jetta AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Volkswagen Jetta 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 Volkswagen Jetta 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 Volkswagen Jetta 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 Volkswagen Jetta 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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