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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
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A/C & HEATER SERVICE PROCEDURES FOR 2003 Infiniti M45 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 M45 cars and light trucks from 1990+
Infiniti -> Component Replacement & Adjustment -> Evaporator Core, 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
- Recover refrigerant as outlined in .
- Remove low- and high-pressure pipes. Cap or plug pipes and openings.
- Remove evaporator by sliding it from heater and cooler unit.
- Remove intake sensor and evaporator core.
- Reverse procedure to install.
G35
- Remove cowl top cover.
- Recover refrigerant as outlined in .
- Remove low- and high-pr...
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A/C & HEATER SERVICE PROCEDURES FOR 2003 Infiniti M45 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 M45 cars and light trucks from 1990+
Electrical Symbol & Wire Color Code Identification -> Wire Color Code Identification -> Imported Vehicles
Vehicle: 2003 Infiniti M45 4.5 V8 GAS
CLICK HERE TO GET FULL ACCESS TO 2003 Infiniti M45 A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 2003 Infiniti M45 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 M45 cars and light trucks from 1990+
Air Bag System Precautions -> Infiniti -> Disarming
Vehicle: 2003 Infiniti M45 4.5 V8 GAS
For "Infiniti QX4" Information, Refer To "Pathfinder" In "Nissan."
- Turn ignition Off, then disconnect battery ground cable.
- On 1990-97 models, wait at least 10 minutes after disconnecting the battery ground cable before performing any service procedures.
- On 1998-2004 models, wait at least three minutes after disconnecting both b...
CLICK HERE TO GET FULL ACCESS TO 2003 Infiniti M45 A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 2003 Infiniti M45 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 M45 cars and light trucks from 1990+
Infiniti -> Component Replacement & Adjustment -> Compressor, 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
- Recover refrigerant as outlined in .
- Remove air cleaner and air duct.
- Remove engine under cover.
- Remove cooling fan lower shroud.
- Remove mounting nuts, then the low- and high-pressure flexible hoses. Cap or plug hoses and openings.
- Disconnect magnet clutch and ECV connectors.
- Remove compressor drive belt.
- Remove radiator hose bracket mounting bolt.
- Remove mounting bolts and compressor, Figs. and .
- Reverse procedure to insta...
CLICK HERE TO GET FULL ACCESS TO 2003 Infiniti M45 A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 2003 Infiniti M45 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 M45 cars and light trucks from 1990+
Imported Cars & Light Trucks & Vans -> 2003-04 -> System Inspection -> Compressor -> Condenser -> Evaporator -> Receiver-Drier/Accumulator -> Refrigerant Line Restrictions -> Thermostatic Expansion Valve
Vehicle: 2003 Infiniti M45 4.5 V8 GAS
While a detailed diagnostic procedure for all air conditioning systems would be impractical due to the many variations in construction and operation, there are three fundamental components of a total diagnosis:
- Refrigerant systems must have an adequate, but not excessive charge.
- Determination must be made whether the refrigerant system is governed by a cycling clutch compressor or by valves which control evaporator pressure.
- The air distribution system (blower motor, switches, vacuum lines and air ducts) must be operational before checking the ...
CLICK HERE TO GET FULL ACCESS TO 2003 Infiniti M45 A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 2003 Infiniti M45 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 M45 cars and light trucks from 1990+
Infiniti -> Automatic Temperature Control System Diagnosis & Testing -> Description -> Air Conditioning Control Module -> Air Mix Door Control -> Ambient Sensor -> Aspirator -> Automatic Amplifier -> Fan Speed Control -> In-Vehicle Sensor -> Intake Door Control -> Magnet Clutch Control -> Mode Door Motor -> Outlet Door Control -> Potentiometer Temperature Control (PTC) -> Rear Ventilator Door Motor -> System Components
Vehicle: 2003 Infiniti M45 4.5 V8 GAS
On I35 models, refer to "Maxima" in .
On QX4 models, refer to "Pathfinder" in .
System Components
Refer to Figs. and , for system component input and output controls.
Air Conditioning Control Module
The air conditioning control system consists an amplifier (on FX35 and FX45 models, includes unified meter). It controls the mode, air mix and intake door motors.
Automatic Amplifier
The auto amplifier receives data from each of the sensors then sends mode, air mix and intake door opening angle data to the respective motors.
The self-diagnostic ...
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