With the system in any mode and the temperature between 19-29°C (66°-84°F), increase or decrease the temperature by 1 degree using either of the following methods:

With the set temperature of 18°C (65°F), the temperature drops immediately to 16°C (60°F) under the following conditions:

With a set temperature of 29°C (85°F), the temperature jumps immediately to 32°C (90°F) under the following conditions:

An increase or decrease of the set temperature signals the heater and A/C programmer to take the following steps in order to bring the passenger compartment temperature to the new temperature setting:

The blower motor or A/C compressor will not operate during the OFF setting. The system will still try to reach the temperature range selected. For example, if 21°C (70°F) is selected on a cold day, the car may eventually reach the 21°C (70°F) temperature range, but the increase may take an extended period of time because the blower fan is not operating. On a hot day the interior can only be cooled to near ambient air temperature since in this mode the blower motor and A/C compressor will not run. This selection forces the air inlet valve open to ambient air and sends half of the air out of the floor ducts and half of the air out of the defroster outlets.

The OFF mode does not affect the following components:

The OFF command will cause the RECIRC mode door to return to the automatic control.

The system will not allow the A/C compressor to operate during the ECON setting. The system cannot cool the vehicle to a temperature any colder than the ambient air temperature. This setting automatically determines the blower speed and the air outlet positions based upon different inputs. All of the incoming air into the heating, ventilation, and air conditioning (HVAC) module is from the outside. Depending on the heating or cooling requirement, most of the air will enter the passenger compartment from one of the following positions:

Everything is controlled automatically based upon the various A/C system inputs. In this setting the system attains and maintains the selected temperature through the following capabilities:

At temperatures above 4°C (40°F) the compressor will dehumidify the air entering the passenger compartment. Depending upon the heating or cooling requirements, most of the air will enter the passenger compartment from one of the following positions:

This setting splits the air flow between the defroster and the floor ducts. At temperatures above 4°C (40°F), the compressor dehumidifies the air entering the passenger compartment.

In this setting, everything is controlled automatically as in AUTO, except that most of the air is directed through the defroster grille on top of the instrument panel. At temperatures above 4°C (40°F), the compressor dehumidifies the air entering the passenger compartment.

Activate dual zone in one of the following ways:

On some vehicles, the dual zone feature can be activated by adjusting the passenger climate control knob located on the right front door.

The dual zone A/C system is a vacuum and electronically controlled heating, ventilation, and air conditioning (HVAC) system. Both electronic and vacuum circuits determine the air intake and discharge locations. The electronic circuits also control the following items:

In the dual zone system, the air mix valve is split in half. Each half has an individual actuator.

When the system is operating in the dual zone mode, the heater and A/C programmer energizes each actuator separately. The driver side discharge temperature is dependent upon the following conditions:

The passenger side discharge air temperature is dependent upon the following conditions:

In all of the other modes, except the dual zone mode, the actuators operate in unison as the system maintains the heater and A/C control SET temperature.

When the RECIRC button is pressed, the light emitting diode (LED) will illuminate. The RECIRC switch signals the programmer to energize the air inlet actuator. Air is recirculated through the heating, ventilation, and air conditioning (HVAC) system from the passenger compartment.

The RECIRC mode is available for operation in the following modes:

1. UPPER
2. LOWER
3. BI-LEVEL

RECIRC is not available during the DEFROST and the DEFOG modes because this may cause windshield fogging.

While RECIRC is operational, any ignition cycle will cancel the function and allow the outside air into the system.

The manual RECIRC will remain activated until one of the following conditions occurs: