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2003 Ford Focus CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Ford 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 Ford Focus car and truck
repair procedures including Ford 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 Ford Focus automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 2003 Ford Focus AUTOMOBILES
Electric Cooling Fans -> Precautions -> Air Bag System Disarming & Arming -> Battery Ground Cable -> Fan Service
Vehicle: 2003 Ford Focus ZTW 2.3 L4 GAS
Air Bag System Disarming & Arming
Refer to and for air bag system disarming and arming procedures.
Battery Ground Cable
Prior to service, disconnect battery ground cable and isolate as required.
Fan Service
Do not operate engine until fan has first been inspected for cracks and/or separations. If a fan blade...
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BRAKE SERVICE PROCEDURES FOR 2003 Ford Focus AUTOMOBILES
Disc Brakes -> Rear Disc & Parking Brakes -> Brake System Bleed -> System Priming -> Wheel Bleeding Sequence
Vehicle: 2003 Ford Focus SE 2.3 L4 GAS
Pressure bleeding is recommended for all hydraulic disc brake systems.
Do not use brake fluid drained from the hydraulic system when bleeding the brakes. Ensure disc brake pistons are returned to their normal positions and the shoe and lining assemblies are properly seated. Before driving the vehicle, inspect the brake operation.
Do not shake the pressure bleeder tank while air is being added or after it has been pressurized. This will prevent air from the tank getting into the lines. Set the tank in the required location, then bring the air hose to the tank. Do not move the ta...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Ford Focus AUTOMOBILES
Ford Motor Co. Passenger Cars -> Fuel Filter Scheduled Maintenance -> Focus -> Normal Service -> Severe Service
Vehicle: 2003 Ford Focus SE 2.0 L4 GAS
Normal Service
Replace every 30,000 mi...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Ford Focus AUTOMOBILES
CV AXLE SHAFT, Replace
Vehicle: 2003 Ford Focus ZX5 2.0 L4 GAS
- Loosen strut lock nut 5 rotations. Use Allen key to prevent piston from rotating.
- Raise and support vehicle, then remove wheel and tire assembly.
- Disconnect ball joint from knuckle.
- Remove hub nut.
- Using puller No. 204-069 and stud extension tool No. 204-085, or equivalents, Fig. , separate halfshaft from wheel hub.
- On right side, remove intermediate shaft bearing mounting nuts.
- On either ...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Ford Focus AUTOMOBILES
Alternator, Replace
Vehicle: 2003 Ford Focus SVT 2.0 L4 GAS
- Disconnect battery ground cable.
- Remove cooling fan motor and shroud.
- Remove drive belt.
- Remove power steering pipe support brackets.
- Remove exhaust manifold heat shield.
- Raise and support vehicle.
- Disconnect alternator electrical connectors.
- Remo...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2003 Ford Focus AUTOMOBILES
Cabin Air Filter Service -> Ford Motor Co. -> 2000-07 Focus
Vehicle: 2003 Ford Focus ZTS 2.0 L4 GAS
Under normal operating conditions the cabin air filter should be replaced every 15,000 miles. In dusty areas change the cabin air filter more often.
- Position the windshield wipers in the vertical position.
- Open the hood.
- Remove the caps from the righthand side air cowl grille retaining screws.
- Remove the righthand side air cowl grille retaining screws, then the grille.
- Open the service flap, then remove the cabin air filter ...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Ford Focus AUTOMOBILES
Ford Motor Co. Cars -> Traction Control System Warning Lamp ->
Vehicle: 2003 Ford Focus SE 2.3 L4 GAS
This lamp should light for a approximately 6-8 seconds when the ignition is turned On as a bulb check. If the warni...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Ford Focus AUTOMOBILES
Radiator, Replace
Vehicle: 2003 Ford Focus ZTS 2.3 L4 GAS
- Disconnect cooling fan motor electrical connectors.
- Remove two pin-type retainers.
- Raise and support vehicle.
- Release top clip of radiator to allow cooling fan motor and shroud to be raised.
- Remove fan and shroud.
- Drain coolant into suitable container.
- Remove four pin-type retainers from radiator air deflector.
- Lower vehicle, then disconnect upper radiator hose.
- Raise and support vehicle.
- On models eq...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Ford Focus AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 Ford Focus ZTS 2.0 L4 GAS
- Raise and support vehicle.
- Remove drive belt cover.
- Loosen bolts on coola...
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COMPONENT LOCATION DIAGRAMS FOR 2003 Ford Focus AUTOMOBILES
Component location diagrams for most 2003 Ford Focus cars and light trucks sold in the U.S. from 1990+.
 Roof Panel Components Diagram for 2003 Ford Focus LX 2.3 L4 GASComponents on diagram: |
 Loading Space Components Diagram for 2003 Ford Focus LX 2.3 L4 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 2003 Ford Focus AUTOMOBILES
OEM drawn wiring diagrams for most 2003 Ford Focus cars and light trucks sold in the U.S.
 2003 Ford Focus ZTW 2.3 L4 GAS Wiring DiagramComponents on diagram: |
 2003 Ford Focus ZTS 2.3 L4 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2003 Ford Focus AUTOMOBILES
OEM TSB listings for most 2003 Ford Focus cars and light trucks sold in the U.S. from 1985+.
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Document: ENGINE VIBRATION AT IDLE - REVISED Vehicle: 2003 Ford Focus SE 2.0 L4 GAS Symptoms: |
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Document: CLUTCH PEDAL RETURN SPRING NOISE AND/OR FREE PLAY - REVISED Vehicle: 2003 Ford Focus SE 2.0 L4 GAS Symptoms: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2003 Ford Focus AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Ford Focus 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 Ford Focus 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 Ford Focus 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 Ford Focus 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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