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2003 Nissan Sentra CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Nissan REPAIR SHOPS DON'T WANT YOU TO KNOW
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- 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

A/C & HEATER SERVICE PROCEDURES FOR 2003 Nissan Sentra AUTOMOBILES
Nissan -> Component Replacement & Adjustment -> Cabin Air Filter, Replace -> Altima, Frontier, Maxima, Pathfinder, Sentra & Xterra -> Murano -> Pathfinder Armada -> Quest
Vehicle: 2003 Nissan Sentra SE-R 2.5 L4 GAS
Altima, Frontier, Maxima, Pathfinder, Sentra & Xterra
- Remove glove compartment.
- Remove cover and cabin air filter.
- Reverse procedure to install.
Murano
- Remove lower instrument panel.
- Remove cover and cabin air filter.
- Reverse procedure to install.
Pathfinder Armada
- Remove two lower glove compartment mounting screws.
- Open glove compartment and ...
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BRAKE SERVICE PROCEDURES FOR 2003 Nissan Sentra AUTOMOBILES
Nissan -> Hydraulic Brake Systems -> Brake System Bleed -> Anti-Lock Brakes -> Less Anti-Lock Brakes
Vehicle: 2003 Nissan Sentra SE-R 2.5 L4 GAS
Less Anti-Lock Brakes
Do not spill brake fluid on painted surfaces, it may cause damage to the paint. If brake fluid is spilled, wash immediately with water.
- Place container under master cylinder to avoid spillage, then fill master cylinder with brake fluid.
- Connect hose to bleeder valves, then depress brake pedal several times.
- With pressure applied to pedal open bleeder valve to release air trapped in system.
- Close bleeder, then release pedal slowly.
- Repeat steps 3 and 4 as outlined above until all air is removed from system.
- Bleed air from system in order as follows:
- Left rear whe...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Nissan Sentra AUTOMOBILES
Nissan/Datsun -> Fuel Filter Replacement -> 2000-06 Maxima & Sentra -> Fuel System Pressure Relief -> Removal & Installation
Vehicle: 2003 Nissan Sentra SE-R 2.5 L4 GAS
Fuel System Pressure Relief
- Remove the fuel pump fuse from the fuse panel.
- Start and run the engine until it stalls.
- After the engine stalls, crank two or three times to ensure all fuel pressure is relieved.
- Turn the ignition Off, then install the fuel pump fuse.
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 mixtures may ...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Nissan Sentra AUTOMOBILES
CV AXLE SHAFT, Replace -> Front
Vehicle: 2003 Nissan Sentra SE-R Spec V 2.5 L4 GAS
Front
Circular clips should be properly meshed with differential side gear (transaxle side). Inspect that clips are properly seated after installation and that driveshaft will not come out. Always use a new circular clip for installation. To prevent damage to CV boots use suitable cloth over boots to prevent damage to boots during removal and installation.
- Raise and support vehicle and support it with safety stands in proper locations.
- Remove wheel nuts and front tire. Before removing front axle assembly disconnect ABS wheel sensor from assembly. Move sensor away from front ...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Nissan Sentra AUTOMOBILES
Starter, Replace
Vehicle: 2003 Nissan Sentra Limited Edition 2.5 L4 GAS
- Disconnect battery ground cable.
- On models equipped with automatic transaxle,remove air duct, fresh air intake hose and air cleaner lid.
- On models equipped with manual transaxle, remove ...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2003 Nissan Sentra AUTOMOBILES
Cabin Air Filter Service -> Nissan -> 2003-06 Sentra
Vehicle: 2003 Nissan Sentra SE-R Spec V 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 stops located at each side of the glove compartment, then the glove compartment.
- Remove the four glove compartment housing retaining screws, then the housing.
- Remove the cabin air filter cover, Fig. .
- Remove the cab...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Nissan Sentra AUTOMOBILES
Nissan -> Air Bag Warning Lamp ->
Vehicle: 2003 Nissan Sentra XE 1.8 L4 GAS
When the ignition key is placed in the on or Start positions, the air bag warning lamp will illuminate for approximately 7 seconds, then turn off. This lamp cycle indica...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Nissan Sentra AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 2003 Nissan Sentra SE-R Spec V 2.5 L4 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 Sentra AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 Nissan Sentra SE-R Spec V 2.5 L4 GAS
- Rotate or lift belt tensioner arm clockwise, using a suitable tool to relieve tension from drive belt. Do not rotate belt tensioner counterclockwise or tensioner will be d...
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COMPONENT LOCATION DIAGRAMS FOR 2003 Nissan Sentra AUTOMOBILES
Component location diagrams for most 2003 Nissan Sentra cars and light trucks sold in the U.S. from 1990+.
![]() Components on diagram: |
![]() Components on diagram: |
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WIRING DIAGRAMS FOR 2003 Nissan Sentra AUTOMOBILES
OEM drawn wiring diagrams for most 2003 Nissan Sentra cars and light trucks sold in the U.S.
![]() Components on diagram: |
![]() Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2003 Nissan Sentra AUTOMOBILES
OEM TSB listings for most 2003 Nissan Sentra cars and light trucks sold in the U.S. from 1985+.
Document: A/C SYSTEM O-RING SEAL LEAKS Vehicle: 2003 Nissan Sentra SE-R 2.5 L4 GAS Auto Systems: |
Document: WINDSHIELD CRACKING Vehicle: 2003 Nissan Sentra SE-R 2.5 L4 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2003 Nissan Sentra AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Nissan Sentra 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 Sentra 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 Sentra 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 Sentra 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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