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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2003 Infiniti Q45 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 2003 Infiniti Q45 automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 2003 Infiniti Q45 AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 2003 Infiniti Q45 cars and light trucks from 1990+
Imported Cars & Light Trucks & Vans -> 2003-04 -> Precautions -> Battery Ground Cable -> Cleanliness -> Engine Coolant -> Exercise System -> General Service -> Product Compatibility -> R-134a -> Refrigerant Oil -> Safety
Vehicle: 2003 Infiniti Q45 4.5 V8 GAS
Battery Ground Cable
Prior to service disconnect battery ground cable and isolate as required.
Product Compatibility
Refrigerant Oil
Before replenishing refrigerant oil, ensure product compatibility with the system being serviced. Refer to "A/C Data," for specifications.
Engine Coolant
Before adding or replacing engine coolant, ensure product compatibility with the system being serviced. If using orange silicate-free coolant, do not mix with green silicated coolant. If mixed, premature engine, heater core or radiator corrosion may result.
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A/C & HEATER SERVICE PROCEDURES FOR 2003 Infiniti Q45 AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 2003 Infiniti Q45 cars and light trucks from 1990+
Imported Cars & Light Trucks & Vans -> 2003-04 -> Evacuating System -> Using Charging Station -> Using Vacuum Pump
Vehicle: 2003 Infiniti Q45 4.5 V8 GAS
Using Vacuum Pump
Vacuum pumps suitable for removing air and moisture from A/C systems are commercially available. A specification for system pump down used here is 28-291/2 inches vacuum. This reading can be attained at or near sea level only. For each 1000 feet of altitude this operation is performed, the reading will be 1 inch vacuum higher. For example, at 5000 feet elevation, only 23-241/2 inches of vacuum can be obtained. The system refrigerant must be completely recovered before it can be evacuated. Damage to the vacuum pump will result if pressurized ...
CLICK HERE TO GET FULL ACCESS TO 2003 Infiniti Q45 A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 2003 Infiniti Q45 AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 2003 Infiniti Q45 cars and light trucks from 1990+
Infiniti -> Component Replacement & Adjustment -> Radiator, Replace -> FX35 -> FX35 & FX45 -> G35 -> M45 & Q45
Vehicle: 2003 Infiniti Q45 4.5 V8 GAS
On I35 models, refer to "Maxima" in .
On QX4 models, refer to "Pathfinder" in .
G35
- Remove engine under cover.
- Drain radiator coolant into suitable container.
- Remove air duct and air cleaner case.
- Remove automatic transaxle oil cooler hoses. Plug or cap hoses and openings, Fig. .
- Disconnect radiator upper and lower hoses.
- Remove lower radiator shroud by pressing pawls.
- Remove radiator shroud.
- Remove cooling fan.
- Remove two radiator upper mount brackets by turning them 90°.
- Remove air conditioner piping from lefthand ...
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A/C & HEATER SERVICE PROCEDURES FOR 2003 Infiniti Q45 AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 2003 Infiniti Q45 cars and light trucks from 1990+
Computer Relearn Procedures -> Infiniti
Vehicle: 2003 Infiniti Q45 4.5 V8 GAS
If the battery has been disconnected or ECM has been replaced, the ECM's memory will return and start to self-contr...
CLICK HERE TO GET FULL ACCESS TO 2003 Infiniti Q45 A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 2003 Infiniti Q45 AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 2003 Infiniti Q45 cars and light trucks from 1990+
Infiniti -> Electric Cooling Fans -> Component Diagnosis & Testing -> Cooling Fan Motor -> FX35 -> FX45 -> G35
Vehicle: 2003 Infiniti Q45 4.5 V8 GAS
On I35 models, refer to "Maxima" in .
On QX4 models, refer to "Pathfinder" in .
Cooling Fan Motor
G35
- Disconnect fan motor connection.
- Connect battery positive voltage to terminal No. 1 and negative to Nos. 3 and 4, Fig. .
- Cooling fan should operate at low speed.
- Connect battery positive voltage to terminals Nos. 1 and 2, and negative to Nos. 3 and 4.
- Cooling fan should operate at high speed.
- If cooling fan does not operate as specified, replace motor.
FX35
- Disconnect fan motor conne...
CLICK HERE TO GET FULL ACCESS TO 2003 Infiniti Q45 A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 2003 Infiniti Q45 AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 2003 Infiniti Q45 cars and light trucks from 1990+
A/C & Cooling System Maintenance -> Infiniti -> 2003-04 G20, G35, I30, I35, J30, M30 & Q45
Vehicle: 2003 Infiniti Q45 4.5 V8 GAS
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