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2003 Nissan Altima CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Nissan 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!

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    Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2003 Nissan Altima car and truck repair procedures including Nissan 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 Nissan Altima automobile. Try the Automotix DIY solution today!
    DIY REPAIR SAMPLES > CONTINUE EXPLORING >
    Using the Automotix DIY repair procedures will save you hundreds and even thousands of dollars! In addition, it will save you hours of touring the city searching for Nissan mechanics you can trust. The Automotix DIY solution is particularly affordable. A full access to the entire DIY repair procedures and diagrams for your 2003 Nissan Altima vehicle will cost less than a single gallon of gas. Here are some of the DIY repair tips and procedures you will find here:

    A/C & HEATER SERVICE PROCEDURES FOR 2003 Nissan Altima AUTOMOBILES

    Computer Relearn Procedures -> Nissan
    Vehicle: 2003 Nissan Altima 3.5 V6 GAS

    If a battery terminal is disconnected, the memory will return to the ECM value. The ECM will now start to self-control at its initial value. Engine oper...

    CLICK HERE TO GET FULL ACCESS TO 2003 Nissan Altima A/C & HEATER SERVICE PROCEDURES

    BRAKE SERVICE PROCEDURES FOR 2003 Nissan Altima AUTOMOBILES

    Nissan -> Hydraulic Brake Systems -> Adjustments -> Brake Booster Output Rod -> Brake Pedal
    Vehicle: 2003 Nissan Altima 2.5 L4 GAS

    Brake Booster Output Rod

    • Apply 19.96 inch HG of vacuum to brake booster using a suitable vacuum pump, Fig. .
    • Inspect output rod length as outlined in Fig. .
    • Adjust output rod length to .4045-.4144 inch.

    Brake Pedal

    • Adjust brake pedal free height dimension "H" in Fig. , to specifications Fig. , using brake booster input rod Fig. . Ensure tip of input rod stays inside clevis pin.
    • With motor running, measure brake pedal depressed height dimension "D" in Fig. , is within specifications Fig. . If not w...

    CLICK HERE TO GET FULL ACCESS TO 2003 Nissan Altima BRAKE SERVICE PROCEDURES

    FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Nissan Altima AUTOMOBILES

    Nissan/Datsun -> Fuel Filter Scheduled Maintenance -> Gasoline Engines -> Normal Service -> Severe Service
    Vehicle: 2003 Nissan Altima 2.5 L4 GAS

    Normal Service

    Service as ...

    CLICK HERE TO GET FULL ACCESS TO 2003 Nissan Altima FUEL FILTER REPLACEMENT PROCEDURES

    DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Nissan Altima AUTOMOBILES

    CV AXLE SHAFT, Replace -> Front -> Rear
    Vehicle: 2003 Nissan Altima 2.5 L4 GAS

    Front

    Before removing front axle assembly, remove wheel sensor from assembly. Move it away from front axle assembly area. Failure to follow these instructions may result in damage to sensor wires and wheel sensor becoming inoperative.

    • Raise and support vehicle and support it with safety stands in proper locations.
    • Remove wheel nuts and front wheels.
    • On models equipped with ABS, remove ABS wheel sensor. Note before removing front axle assembly, remove ABS wheel sensor from assembly, then position it aside. Failure to follow this instruction may result in damage to sensor or s...

    CLICK HERE TO GET FULL ACCESS TO 2003 Nissan Altima DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES

    STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Nissan Altima AUTOMOBILES

    Starter, Replace
    Vehicle: 2003 Nissan Altima 2.5 L4 GAS

    • Disconnect battery ground cable.
    • Remove air cleaner cover and collector duct to intake manifold.
    • Disconnect starter wiring from starter.
    • Remove starter retaining bolts and starter.
    • Reverse procedure to install, noting the following:
      • On models equipped with manual transaxle, torque star...

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    CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2003 Nissan Altima AUTOMOBILES

    Cabin Air Filter Service -> Nissan -> 2002-04 Altima
    Vehicle: 2003 Nissan Altima 2.5 L4 GAS

    Under normal operating conditions the cabin air filter should be replaced every 12 months or 15,000 miles. In dusty areas change the cabin air filter more often.

    • Open the glove compartment.
    • Remove the two glove compartment striker retaining screws, Fig. .
    • Remove the two glove compartment retaining screws, then disengage the retaining clips.
    • Lift the glove compartment from the instrument panel, then disconnect the glove compartment lamp.
    • Remove the four glove compartment housing retaining sc...

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    MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Nissan Altima AUTOMOBILES

    Nissan -> Low Coolant Lamp ->
    Vehicle: 2003 Nissan Altima 3.5 V6 GAS

    This lamp will be illuminated when the coolant level in the cooling system reservoir drops bel...

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    RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Nissan Altima AUTOMOBILES

    Coolant Hose, Replace -> Lower -> Upper
    Vehicle: 2003 Nissan Altima 3.5 V6 GAS

    Lower

    • Disconnect battery ground cable.
    • Drain cooling system into a suitable container by loosening drain plug of radiator.
    • Reposition hose clamp at radiator outlet.
    • Remove hose from radiator.
    • Reposition hose clamp at water inlet.
    • Remove hose from water inlet.
    • Remove hose from vehicle.
    • Reverse procedure t...

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    SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Nissan Altima AUTOMOBILES

    Serpentine Drive Belt, Replace
    Vehicle: 2003 Nissan Altima 2.5 L4 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 Nissan Altima AUTOMOBILES

    Component location diagrams for most 2003 Nissan Altima cars and light trucks sold in the U.S. from 1990+.

    Refrigeration System Components Diagram for 2003 Nissan Altima  3.5 V6 GASRefrigeration System Components Diagram for 2003 Nissan Altima 3.5 V6 GAS

    Components on diagram:
  • Blower Unit
  • Heater Unit
  • Cooling Unit
  • Defroster Nozzle
  • Ventilator Duct
  • Ground Location Diagram for 2003 Nissan Altima  3.5 V6 GASGround Location Diagram for 2003 Nissan Altima 3.5 V6 GAS

    Components on diagram:
  • Ground M61
  • CLICK HERE TO GET FULL ACCESS TO 2003 Nissan Altima PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR 2003 Nissan Altima AUTOMOBILES

    OEM drawn wiring diagrams for most 2003 Nissan Altima cars and light trucks sold in the U.S.

    2003 Nissan Altima  3.5 V6 GAS Wiring Diagram2003 Nissan Altima 3.5 V6 GAS Wiring Diagram

    Components on diagram:
  • Battery
  • Ignition Switch ACC or ON
  • Audio Unit
  • 2003 Nissan Altima  2.5 L4 GAS Wiring Diagram2003 Nissan Altima 2.5 L4 GAS Wiring Diagram

    Components on diagram:
  • Ignition Switch ACC or ON
  • Audio Unit
  • Spiral Cable
  • Steering Wheel Audio Control Switches
  • CLICK HERE TO GET FULL ACCESS TO 2003 Nissan Altima WIRING DIAGRAMS!

    TECHNICAL SERVICE BULLETINS FOR 2003 Nissan Altima AUTOMOBILES

    OEM TSB listings for most 2003 Nissan Altima cars and light trucks sold in the U.S. from 1985+.

    Document: A/C SYSTEM O-RING SEAL LEAKS
    Vehicle: 2003 Nissan Altima 2.5 L4 GAS

    Auto Systems:
  • Heating, A/C, Ventilation, Defogger
  • Document: WINDSHIELD CRACKING
    Vehicle: 2003 Nissan Altima 2.5 L4 GAS

    Auto Systems:
  • Glass, Doors, Hood, Decklid, Tailgate, Liftgate, Locks
  • CLICK HERE TO GET FULL ACCESS TO 2003 Nissan Altima TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR 2003 Nissan Altima AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Nissan Altima 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 Nissan Altima 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 Nissan Altima 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 Nissan Altima 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

    CLICK HERE TO GET FULL ACCESS TO 2003 Nissan Altima SPECIFICATIONS DATA!

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    Click here to view more details about 1999 Nissan Altima Splash Shield, Front, Driver Side1999 Nissan Altima Splash Shield, Front, Driver Side, A high quality, OE replacement splash shield; Backed by 1-year, unlimited-mileage warranty..

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    $10.67

    Click here to view more details about 2001 Nissan Altima Mirror, Driver Side2001 Nissan Altima Mirror, Driver Side.

    Source: Auto Body Parts Store

    $98.61

    Click here to view more details about 2006 Nissan Altima Door Handle Cover ABS2006 Nissan Altima Door Handle Cover ABS, Door Handle Covers; 4 Door; Without Passenger Side Keyhole, , .

    Source: Wheels / Rims, Mirrors & Lights Store

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    Click here to view more details1993 Nissan Altima L4, 2.4 L, 2389 CC Rebuilt Engine, "SOHC, 12 valve, Dist mounts in timing cover, dipstick by #4,, Warranty: 3-Year/100,000 Mile, .

    Source: Rebuilt Engines Store

    $1,745.00

    Click here to view more details2000 Nissan Altima Used Air Flow Meter/Sensor, 2.4, AUTO, FWD, Very Good.

    Source: Used Auto Parts Store

    $100.00

    Click here to view more details2006 Nissan Altima Used A/C Compressor, 2.5, AUTO, FWD, Very Good.

    Source: Used Auto Parts Store

    $139.00
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