WARNING: This page is about a different car, the 2003 Mercury Mountaineer and 2003 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Vacuum Schematic - Manual Climate Control System Operation (1 Of 3)
Courtesy of FORD MOTOR CO.
Fig 2: Identifying Vacuum Schematic - Manual Climate Control System Operation (2 Of 3)
Courtesy of FORD MOTOR CO.
Fig 3: Identifying Vacuum Schematic - Manual Climate Control System Operation (3 Of 3)