Ford Mustang (1999-2004) Service Manual: System Air Flow Description

MAX A/C

MAX A/C

When MAX A/C is selected:

  • The air inlet door vacuum control motor is at full vacuum, closing off outside air and admitting only recirculated air.
  • The panel/defrost door vacuum control motor is at full vacuum and the panel/floor door vacuum control motor is at no vacuum, directing airflow to the instrument panel A/C registers. A small amount of airflow from the side window demisters will be present.
  • Blended air temperature is available.
  • The A/C compressor will operate if the outside temperature is above approximately 6C (43F).
  • The blower motor is on.

NORM A/C

NORM A/C

When NORM A/C is selected:

  • The air inlet door vacuum control motor is at no vacuum, admitting only outside air into the passenger compartment.
  • The panel/defrost door vacuum control motor is at full vacuum and the panel/floor door vacuum control motor is at no vacuum, directing airflow to the instrument panel A/C registers. A small amount of airflow from the side window demisters will be present.
  • Blended air temperature is available.
  • The A/C compressor will operate if the outside air temperature is above approximately 6C (43 F).
  • The blower motor is on.

PANEL

PANEL

When PANEL is selected:

  • The air inlet door vacuum control motor is at no vacuum, admitting only outside air into the passenger compartment.
  • The panel/defrost door vacuum control motor is at full vacuum and the panel/floor door vacuum control motor is at no vacuum, directing airflow to the instrument panel A/C registers. A small amount of airflow from the side window demisters will be present.
  • The temperature can be adjusted to heat the air, but the air cannot be cooled below the outside temperature.
  • The A/C compressor will not operate.
  • The blower motor is on.

OFF

OFF

When OFF is selected:

  • The air inlet door vacuum control motor is at full vacuum, closing off outside air from entering the passenger compartment.
  • The panel/floor door vacuum control motor is at full vacuum and the panel/defrost door vacuum control motor is at no vacuum, closing off airflow to the defrost duct, side window demisters, floor duct and instrument panel A/C registers.
  • The A/C compressor will not operate.
  • The blower motor is off.

FLOOR

FLOOR

When FLOOR is selected:

  • The air inlet door vacuum control motor is at no vacuum, admitting only outside air into the passenger compartment.
  • The panel/floor door vacuum control motor is at full vacuum and the panel/defrost door vacuum control motor is at no vacuum, directing airflow to the floor duct. A small amount of airflow from the side window demisters will be present.
  • The temperature can be adjusted to heat the air, but the air cannot be cooled below the outside temperature.
  • The A/C compressor will not operate.
  • The blower motor is on.

FLOOR/DEFROST

FLOOR/DEFROST

When FLOOR/DEFROST is selected:

  • The air inlet door vacuum control motor is at no vacuum, admitting only outside air into the passenger compartment.
  • The panel/floor door vacuum control motor is at partial vacuum and the panel/defrost door vacuum control motor is at no vacuum, directing airflow to the floor duct, the defroster duct, and the side window demisters.
  • The temperature can be adjusted to heat or cool the air below the outside temperature.
  • The A/C compressor will operate if the outside air temperature is above approximately 6C (43 F).
  • The blower motor is on.

DEFROST

DEFROST

When DEFROST is selected:

  • The air inlet door vacuum control motor is at no vacuum, admitting only outside air into the passenger compartment.
  • The panel/floor door and panel/defrost door vacuum control motors are at no vacuum, directing airflow to the defroster duct and the side window demisters.
  • The temperature can be adjusted to heat or cool the air below the outside temperature.
  • The A/C compressor will operate if the outside air temperature is above approximately 6C (43 F).
  • The blower motor is on.

Electrical Components

Electrical Components

 

Electrical Components

Electrical Components

    Principles of Operation
    There are four main principles involved with the basic theory of operation: heat transfer latent heat of vaporization relative humidity effects of pressure Heat Transfer If two substan ...

    Climate Control System (Diagnosis and Testing)
    Refer to Wiring Diagrams Cell 54 , Air Conditioner/Heater for schematic and connector information. Special Tool(s) Connector, Refrigerant Pressure Line 412-093 (T94P-19623-E) ...

    Other materials:

    Oil Level Indicator and Tube
    Removal 1. Remove the oil level indicator. 2. Remove the LH exhaust manifold. For additional information, refer to Exhaust Manifold LH in this section. 3. Remove the bolt. 4. Remove the oil level indicator tube. Installation 1. To install, reverse the r ...

    Battery Cables
    Removal WARNING: Batteries normally produce explosive gases which can cause personal injury. Therefore, do not allow flames, sparks or lighted substances to come near the battery. When charging or working near a battery, always shield your face an ...

    Installation
    1. Apply silicone gasket and sealant in the locations shown. 2. Install the engine front cover.   3. Install the belt idler pulleys and the bolts. 4. Connect the CMP sensor electrical connector. 5. Raise the vehicle. 6. Install the crankshaft fr ...