THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLES THAT MAY HAVE AN OUTSIDE AIR TEMPERATURE INOPERATIVE. TO PERFORM AN INSTANT UPDATE OF THE AMBIENT TEMPERATURE SENSOR, PRESS AND HOLD THE RECIRC BUTTON AND AIR CONDITIONING BUTTON ON THE HEATER-VENT-AIR CONDITIONING CONTROL HEAD SIMULTANEOUSLY. IT IS ALSO POSSIBLE TO PERFORM THIS BY USING A SCAN TOOL IN SPECIAL FUNCTION MODE AND SELECT INSTANT UPDATE.