With Electronic Automatic Temperature Control

The EATC assembly is located in the instrument panel and consists of the following:
^ eleven push buttons
^ a variable blower speed control wheel for manual input
^ a digital display window for displaying set temperature, ambient temperature, function and DTCs

When the system is operating under AUTOMATIC control, the digital display window will show AUTO and the preferred or target temperature to which the elements of the automatic control system respond.
^ A/C blower motor speed, under automatic control, varies in response to ambient temperature changes and a predetermined delay factor.
^ Temperature may be increased or decreased in one degree increments between 18°C (65°F) and 29°C (85°F) by pressing the red button to increase or the blue button to decrease the desired temperature. The system will respond accordingly.

Other control assembly features include:
^ a 16°C (60°F) setting for maximum cool and a 32°C (90°F) setting for maximum heat.
^ an OUTSIDE TEMP button which, when pressed, will display the air temperature outside the vehicle.
^ an OFF button which, if pressed, will apply vacuum to close the A/C air inlet duct door, shut off A/C blower motor operation and discontinue climate control functions except OUTSIDE TEMP.

When the thumbwheel control for the blower motor is rotated out of the position it occupied under automatic control, it will remain under manual control until the automatic button is pressed.
^ Under automatic control, A/C blower motor speed varies as required to accommodate the total automatic functions in the system.
^ Under manual control, A/C blower motor speed is constant based on the thumbwheel setting.