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7A – 2 HEATING AND VENTILATION SYSTEM DESCRIPTION AND SYSTEM OPERATION HEATING AND VENTILATION The base heater system is designed to provide heating, The heater and fan assembly blower regulates the air- The heater core transfers the heat from the engine cool- The temperature door regulates the amount of the air The mode door regulates the flow and the distribution This console-mounted heating and ventilation panel Three Rotary Control Knobs 1. The Rotary Temperature Control Knob D Actuates by cable. D Raises the temperature of the air entering the ve- 2. The Rotary Blower Control Knob D Turns on to operate the blower motor at four speeds. D Turns to stop the blower. D Operates completely independently both from the D Changes the fan speed in any mode and at any 3. The Rotary Mode Control Knob: D Actuates by cable. D Regulates the air distribution between the wind- Push Knobs 1. The Rear Window Defogger Push Knob D Controls the rear window defogger. D Turns ON the rear window defogger when the push 2. The A/C Push Knob (if the vehicle is equipped with air conditioning) D Controls the A/C. D Turns the A/C ON when the push knob is down. One Lever 1. The Fresh Air Control Lever D Operates by cable. D Switches between recirculating passenger compart- D Draws in outside air when the lever is moved to the D Recirculates inside air when the lever is moved to |