Auto Parts Search
2003 Infiniti Q45 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
A/C & HEATER SERVICE PROCEDURES FOR 2003 Infiniti Q45 AUTOMOBILES
Air Bag System Precautions -> Infiniti -> Arming
Vehicle: 2003 Infiniti Q45 4.5 V8 GAS
For "Infiniti QX4" Information, Refer To "Pathfinder" In "Nissan."
- Ensure no one is inside vehicle.
- Connect battery cables as required.
- From a safe location at sides of or below air bag modules, turn ignit...
CLICK HERE TO GET FULL ACCESS TO 2003 Infiniti Q45 A/C & HEATER SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 2003 Infiniti Q45 AUTOMOBILES
Infiniti -> Disc Brakes -> Caliper Service -> Cylinder Body -> Front -> FX35, FX45, G35, M45, Q45 & QX56 -> I35 -> Inspection -> Overhaul -> Piston -> Rear -> Replacement
Vehicle: 2003 Infiniti Q45 4.5 V8 GAS
Replacement
Front
- Raise and support vehicle.
- Remove caliper mounting pins/bolts, Figs. through .
- Disconnect brake hose and remove caliper.
- Reverse procedure to install.
Rear
I35
- Raise and support vehicle.
- Disconnect parking brake control lever and cable.
- Remove caliper mounting pins/bolts, Fig. .
- Disconnect brake hose and remove caliper.
- Reverse procedure to install.
FX35, FX45, G35, M45, Q45 & QX56
- Remove master cylinder reservoir cap.
- Remove lower pin sliding bolt, Figs. through .
- Remove brake caliper hydraulic line.
- Remove caliper from torque member.
- Reverse procedure to install.
Overhaul
Fron...
CLICK HERE TO GET FULL ACCESS TO 2003 Infiniti Q45 BRAKE SERVICE PROCEDURES
FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Infiniti Q45 AUTOMOBILES
Infiniti -> Fuel Filter Replacement -> All Models -> Fuel System Pressure Relief -> Removal & Installation
Vehicle: 2003 Infiniti Q45 4.5 V8 GAS
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.
Prior to disconnecting fuel lines, the fuel system pressure must be relieved to prevent accidental spray of fuel.
After the battery has been disconnected and reconnected, some abnormal driveabilty symptoms may occur. The vehicle may need to be driven 10...
CLICK HERE TO GET FULL ACCESS TO 2003 Infiniti Q45 FUEL FILTER REPLACEMENT PROCEDURES
DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Infiniti Q45 AUTOMOBILES
CV AXLE SHAFT, Replace -> Front
Vehicle: 2003 Infiniti Q45 4.5 V8 GAS
Front
- Raise and support vehicle and support it with safety stands in proper locations.
- Remove wheel nuts and rear wheels.
- Disconnect ABS wheel sensor to prevent damage of sensor. Cover boots with shop towel to prevent damage when removing driveshaft assembly.
- Remove cotter pin and driveshaft castle nut and washer from front hub. Discard old cotter pin and install a new one.
- Remove six bolts from inside flange of driveshaft using suitable tool. Discard bolts and was...
CLICK HERE TO GET FULL ACCESS TO 2003 Infiniti Q45 DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES
TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR 2003 Infiniti Q45 AUTOMOBILES
Component Locations
Vehicle: 2003 Infiniti Q45 4.5 V8 GAS
Refer to F...
CLICK HERE TO GET FULL ACCESS TO 2003 Infiniti Q45 TIRE PRESSURE MONITORING SYSTEM PROCEDURES
STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Infiniti Q45 AUTOMOBILES
Starter, Replace
Vehicle: 2003 Infiniti Q45 4.5 V8 GAS
- Disconnect battery ground cable.
- Remove steering gear and linkage assembly.
- Disconnect starter motor electrical connector.
- Remove mounting bolts ...
CLICK HERE TO GET FULL ACCESS TO 2003 Infiniti Q45 STARTER & ALTERNATOR REPLACEMENT PROCEDURES
CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2003 Infiniti Q45 AUTOMOBILES
Cabin Air Filter Service -> Infiniti -> 2002-06 Q45 & 2003-04 M45
Vehicle: 2003 Infiniti Q45 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...
CLICK HERE TO GET FULL ACCESS TO 2003 Infiniti Q45 CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES
MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Infiniti Q45 AUTOMOBILES
Infiniti -> Four Wheel Drive (4WD) Warning Lamp ->
Vehicle: 2003 Infiniti Q45 4.5 V8 GAS
When the ignition switch is placed in the on position, the 4WD warning lamp will light as a bulb check but should go off soon after the engine is started. If a malfunction in the 4WD ...
CLICK HERE TO GET FULL ACCESS TO 2003 Infiniti Q45 MAINTENANCE LAMP RESET PROCEDURES
RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Infiniti Q45 AUTOMOBILES
Heater Hose, Replace -> Bypass -> Inlet -> Outlet
Vehicle: 2003 Infiniti Q45 4.5 V8 GAS
Inlet
- Disconnect battery ground cable.
- Drain cooling system into a suitable container by loosening drain plug of radiator.
- Reposition hose clamp at heater core.
- Remove hose from heater core.
- Reposition hose clamp at heater pipe.
- Remove hose from heater pipe.
- Remove hose from vehicle.
- Reverse procedure to install.
Outlet
- Disconnect battery ground cable.
- Drain cooling system into a suitable container by loosening drain plug of radiator.
- Reposition hose clamp...
CLICK HERE TO GET FULL ACCESS TO 2003 Infiniti Q45 RADIATOR & HOSE REPLACEMENT PROCEDURES
SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Infiniti Q45 AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 Infiniti Q45 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...
CLICK HERE TO GET FULL ACCESS TO 2003 Infiniti Q45 SERPENTINE BELT SERVICE PROCEDURES
COMPONENT LOCATION DIAGRAMS FOR 2003 Infiniti Q45 AUTOMOBILES
Component location diagrams for most 2003 Infiniti Q45 cars and light trucks sold in the U.S. from 1990+.
Ground Location Diagram for 2003 Infiniti Q45 4.5 V8 GAS Components on diagram: |
Door Harness Locations Diagram for 2003 Infiniti Q45 4.5 V8 GAS Components on diagram: |
CLICK HERE TO GET FULL ACCESS TO 2003 Infiniti Q45 PARTS/COMPONENTS LOCATION DIAGRAMS!
WIRING DIAGRAMS FOR 2003 Infiniti Q45 AUTOMOBILES
OEM drawn wiring diagrams for most 2003 Infiniti Q45 cars and light trucks sold in the U.S.
2003 Infiniti Q45 4.5 V8 GAS Wiring Diagram Components on diagram: |
2003 Infiniti Q45 4.5 V8 GAS Wiring Diagram Components on diagram: |
CLICK HERE TO GET FULL ACCESS TO 2003 Infiniti Q45 WIRING DIAGRAMS!
TECHNICAL SERVICE BULLETINS FOR 2003 Infiniti Q45 AUTOMOBILES
OEM TSB listings for most 2003 Infiniti Q45 cars and light trucks sold in the U.S. from 1985+.
Document: INTELLIGENT KEY BATTERY REPLACEMENT AND BATTERY DISCHARGE INDICATOR RESET Vehicle: 2003 Infiniti Q45 4.5 V8 GAS Auto Systems: |
Document: A/C System O-Ring Seal Leaks Vehicle: 2003 Infiniti Q45 4.5 V8 GAS Auto Systems: |
CLICK HERE TO GET FULL ACCESS TO 2003 Infiniti Q45 TECHNICAL SERVICE BULLETINS!
COMPONENT/PARTS SPECIFICATIONS FOR 2003 Infiniti Q45 AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Infiniti Q45 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 Q45 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 Q45 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 Q45 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 Infiniti Q45 SPECIFICATIONS DATA!
Shop online for auto body parts, engines, wheels, lights...
More parts |
Get the Complete Technical Service Bulletins! |
Access diagrams and repair information such as wiring diagrams, diagnosis and repair charts, manufacturer service bulletins, and OEM Part numbers of your 2003 Infiniti Q45 vehicle. |
Access the Complete guide! |