Single Switch

Use a self-powered test lamp or an ohmmeter to test the power window switch.
With the switch in the neutral position, there should be continuity between terminals No. 1 and 3, 2 and 5, and 4 and 6. See Fig 1 . See WIRING DIAGRAMS .
With the toggle switch pushed downward, there should be continuity between terminals No. 2, 4 and 5, and 1 and 3. Terminal No. 6 should be disconnected from any other terminal.. See Fig 1 . See WIRING DIAGRAMS .
With the toggle switch pushed upward, there should be continuity between terminals No. 2, 3 and 5, and 4 and 6. Terminal No. 1 should be disconnected from any other terminal.. See Fig 1 . See WIRING DIAGRAMS .
If the switch does not test as stated, replace the switch.

Fig 1: Identify Power Window Single Switch Terminals (Aerostar)

Courtesy of FORD MOTOR CO.