1997 Ford Taurus HVAC Vacuum Diagram - A/C Heater Door Motors & Part Numbers

This document is a Ford heater/air-conditioning (HVAC) vacuum and airflow schematic with an accompanying 19-item parts legend (diagram reference AM0043-A). The exploded/schematic drawing shows air paths through the climate control case, defrost, demister, floor, front and rear A/C registers, outside air and recirculated air inlets, along with the vacuum hose harness routing identified by hose colors (black, red, white, blue, yellow) from the vacuum source to the reservoir tank, check valve, and vacuum control motors (marked NV/PV). The table lists each callout number with its Ford base part number and description, covering the windshield defroster door and its vacuum motor (18A318), primary and supplemental A/C air temperature control doors (19A842, 19C722), air inlet duct doors (19A814, 18731), an optional pollen filter (19N619), blower motor (18527), A/C evaporator core (19860), heater core (18476), vacuum reservoir tank and bracket (19A566), vacuum check valve (19A563), vacuum hose harness (19C827), heater air damper door (18752) and its motor, and supplemental A/C damper door components used with rear-seat A/C registers only (19A901). A reader can identify HVAC door functions, vacuum motor locations, hose color coding, and Ford part numbers for repair or diagnosis.