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2003 Infiniti M45 CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Infiniti 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
- Tire Pressure Monitoring System
- 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 Infiniti M45 car and truck
repair procedures including Infiniti 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 Infiniti M45 automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 2003 Infiniti M45 AUTOMOBILES
Infiniti -> Component Replacement & Adjustment -> Blower Motor, Replace -> FX35 & FX45 -> G35 -> M45 & Q45
Vehicle: 2003 Infiniti M45 4.5 V8 GAS
On I35 models, refer to "Maxima" in .
On QX4 models, refer to "Pathfinder" in .
FX35 & FX45
- Remove lower instrument panel cover.
- Disconnect blower motor connector.
- Remove mounting screws and blower motor.
- Reverse procedure to install.
G35
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BRAKE SERVICE PROCEDURES FOR 2003 Infiniti M45 AUTOMOBILES
Infiniti -> Hydraulic Brake Systems -> Component Replacement -> Master Cylinder
Vehicle: 2003 Infiniti M45 4.5 V8 GAS
Master Cylinder
- Connect suitable vinyl tube to bleeder valve.
- Drain brake fluid into suitable container by opening bleeder valve and depressi...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Infiniti M45 AUTOMOBILES
Infiniti -> Fuel Filter Scheduled Maintenance -> All Models -> Normal Service -> Severe Service
Vehicle: 2003 Infiniti M45 4.5 V8 GAS
Normal Service
Service as req...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Infiniti M45 AUTOMOBILES
CV AXLE SHAFT, Replace -> Front
Vehicle: 2003 Infiniti M45 4.5 V8 GAS
Front
- Raise and support vehicle and support it with safety stands in proper locations.
- Remove wheel nuts and rear wheels.
- Remove cotter pin and driveshaft castle nut and washer from front hub.
- Remove exhaust center tube.
- Remove nuts and bolts between final drive and driveshaft.
- Separate wheel hub and bearing assembly from driveshaft by lightly tapping end with suitable tool and wood block, then re...
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TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR 2003 Infiniti M45 AUTOMOBILES
Component Replacement -> Installation -> Removal -> Tire Pressure Sensor -> TPMS Control Unit -> TPMS Receiver
Vehicle: 2003 Infiniti M45 4.5 V8 GAS
Tire Pressure Sensor
Removal
- Deflate tire, then remove retaining nut an allow sensor to fall into tire.
- Gently bounce tire so sensor falls to bottom of tire.
- Place tire on suitable tire changing machine and break both tire beads. Ensure sensor remains at bottom of tire.
- Turn tire so valve hole is at bottom, then bounce tire so sensor is near valve hole.
- Lift tire onto turntable and position tire valve stem hole 270° from mounting/dismounting head, Fig. .
- Lubricate tire, then remove first side of tire.
- Reach inside of tire and remove sensor, Fig. .
- Remove second side of tire.
Install...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Infiniti M45 AUTOMOBILES
Alternator, Replace
Vehicle: 2003 Infiniti M45 4.5 V8 GAS
- Disconnect battery ground cable.
- Remove air intake duct and housing.
- Loosen idler pulley and remove A/C compressor and alternator drive belts.
- Remove power steering hose to alternator bracket retaining clamp.
- Remove radiator tank and overflow reservoir tank.
- Remove upper alternator mounting bolt.
- Remove upper alternator bracket mounting bolts, then the bracket.
- Remove power steering flu...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2003 Infiniti M45 AUTOMOBILES
Cabin Air Filter Service -> Infiniti -> 2002-06 Q45 & 2003-04 M45
Vehicle: 2003 Infiniti M45 4.5 V8 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.
- Pull the glove compartment strap damper clips to the righthand to remove, Fig. .
- Disconnect glove compartment strap clips.
- Remove the glove compartment retaining pins, then the glove compartment.
- Remove the glove compartment striker retaining screws.
- Disconnect the elect...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Infiniti M45 AUTOMOBILES
Infiniti -> Rear Active Steering (RAS) Lamp ->
Vehicle: 2003 Infiniti M45 4.5 V8 GAS
If the Rear Active Steering (RAS) Check lamp comes on when the engine is running, a malfunction in the rear active steering system has been detect...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Infiniti M45 AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 2003 Infiniti M45 4.5 V8 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 thermostat housing.
- Remove hose from thermostat housing.
- Remove hose from vehicle.
- Reverse pr...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Infiniti M45 AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 Infiniti M45 4.5 V8 GAS
- Remove air duct inlet assembly and place it aside.
- Rotate or lift belt tensioner arm counterclockwise, using a suitable tool to relieve tension from drive belt. Do not rotate belt tensioner cloc...
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COMPONENT LOCATION DIAGRAMS FOR 2003 Infiniti M45 AUTOMOBILES
Component location diagrams for most 2003 Infiniti M45 cars and light trucks sold in the U.S. from 1990+.
 Data Link Connector Diagram for 2003 Infiniti M45 4.5 V8 GASComponents on diagram: |
 A/T Electrical Parts Diagram for 2003 Infiniti M45 4.5 V8 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 2003 Infiniti M45 AUTOMOBILES
OEM drawn wiring diagrams for most 2003 Infiniti M45 cars and light trucks sold in the U.S.
 2003 Infiniti M45 4.5 V8 GAS Wiring DiagramComponents on diagram: |
 2003 Infiniti M45 4.5 V8 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2003 Infiniti M45 AUTOMOBILES
OEM TSB listings for most 2003 Infiniti M45 cars and light trucks sold in the U.S. from 1985+.
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Document: INTELLIGENT KEY BATTERY REPLACEMENT AND BATTERY DISCHARGE INDICATOR RESET Vehicle: 2003 Infiniti M45 4.5 V8 GAS Auto Systems: |
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Document: A/C System O-Ring Seal Leaks Vehicle: 2003 Infiniti M45 4.5 V8 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2003 Infiniti M45 AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Infiniti M45 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 Infiniti M45 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 Infiniti M45 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 Infiniti M45 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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