Manual Temperature Control (MTC)

SINGLE ZONE
A single zone heating and air conditioning system allows one temperature setting for the entire vehicle. The full range of temperatures that the system can produce are available by rotating the temperature control located in control panel.

The control panel and integral computer is mounted in the instrument panel.

MANUAL DUAL ZONE
A manual Dual Zone Heating and Air Conditioning system allows completely independent side-to-side temperature control of the discharge air.

The Dual Zone Heating and Air Conditioning system includes a dust and odor air filter. The filter element is the same size as the air conditioning evaporator to ensure ample capacity. A door at the base of the heating and air conditioning housing below the glove box provides easy access to the filter element.

The control panel and integral computer is located in the instrument panel.

The instrument panel mounted control and integral computer contains:
- a power button which allows the system to be completely turned OFF. Contains an LED that illuminates to show when the function is operational.
- rear window defogger ON/OFF switch. Contains an LED that illuminates to show when the function is operational.
- slide controls for completely independent side-to-side temperature control of the discharged air. The full range of temperature that the system can produce in any mode is available on either side of the vehicle by independently positioning the slide controls on the instrument panel.
- air recirculation ON/OFF switch. The Recirculate button contains an LED that illuminates to show when the function is in operation.
- air conditioning ON/OFF switch. The Snowflake button contains an LED that illuminates to shown when the function is in operation.
- rotary knob for fan speed selection.
- a rotary knob for mode control.
- The mode control knob enables continuously variable proportioning of air flow between modes but has detents adjacent to each icon.
- The blower control provides five separate speeds.
- When the fan is OFF, the HVAC computer closes the recirculation door to prevent outside air from entering the passenger compartment.
- Interior air may be recirculated to speed up heating or cooling in all modes except defrost and mix by pressing the Recirculate button on the control panel.
- To reduce humidity for rapid defogging the A/C compressor runs automatically in modes from mix to full defrost when outside temperatures are above freezing.
- Air conditioning is available in any mode by pressing the snowflake, A/C ON/OFF, button.

MANUAL THREE ZONE
The fully adjustable Three-Zone front and rear heating and air conditioning system allows intermediate seat passengers the ability to regulate air temperature as well as fan speed. All controls are identified by ISO graphic symbols.

The Three Zone Heating and Air Conditioning system includes a dust and odor air filter. The filter element is the same size as the air conditioning evaporator to ensure ample capacity. A door at the base of the heating and air conditioning housing below the glove box provides easy access to the filter element.

Front Control Panel
The front control panel and integral computer is mounted in the instrument panel.

The instrument panel mounted control and integral computer contains:
- a power button which allows the system to be completely turned OFF.
- rear window defogger on/off switch.
- slide controls for completely independent side-to-side temperature control of the discharge air. The full range of temperature that the system can produce in any mode is available on either side of the vehicle by independently positioning the slide controls on the instrument panel.
- air recirculation button. The Recirculate button contains an LED that illuminates to show when the function is in operation.
- an air conditioning button that allows the compressor to be turned ON/OFF. The Snowflake button contains an LED that illuminates to shown when the function is in operation.
- rotary knobs for front and rear fan speed selection.
- a rotary knob for mode control.
- Primary control of the rear compartment unit is on the instrument panel. This control allows the driver to set the rear compartment fan speed, to turn the rear unit OFF, or to give control to the intermediate seat occupants by switching to the REAR position. When the rear unit is controlled from the instrument panel, rear air temperature is based on the driver-side temperature control position, and the mode (floor or overhead air) is based on the front control's mode position.
- The mode control knob enables continuously variable proportioning of air flow between modes but has detents adjacent to each icon.
- The blower control provides five separate speeds and OFF. When the fan is off, the HVAC computer closes the recirculation door to prevent outside air from entering the passenger compartment.
- Interior air may be recirculated to speed up heating or cooling in all modes except defrost and mix by pressing the Recirculate button on the control panel.
- To reduce humidity for rapid defogging the A/C compressor runs automatically in modes from mix to full defrost when outside temperatures are above freezing.
- Air conditioning is available in any mode by pressing the snowflake, A/C ON/OFF, button.

Rear Control Panel
A rear control panel centrally mounted on the headliner has a rotary adjustment for temperature and fan speed control of the rear unit by intermediate seat passengers when the front control rear knob is set to the rear position.

With the rear control active, temperature selection dictates indirectly the mode (floor or overhead air) of the rear unit: a low temperature setting directs flow to the overhead outlets and a high temperature setting to the floor.