Test A - Both Power Windows Inoperative
- Check 30 amp power window fuse. Replace fuse if bad. If fuse continues to blow, go to step 2). If fuse does not fail, go to step 4).
- Turn ignition off. Locate and disconnect 16-pin interior fuse panel connector. See Fig 1
. Disconnect main power window switch connector and passenger's power window switch connector. Measure resistance between Black/Red wire at 16-pin interior fuse panel connector and ground. If resistance is less than 5 ohms, repair Black/Red wire between power window switches and interior fuse panel. If resistance is not less than 5 ohms, go to step 3).
- With ignition off, disconnect main power window switch connector. Measure resistance between switch connector Green/Black, Red/Blue, Green/White and Red/White wires and ground. If any resistances are less than 5 ohms, repair circuit in question for a short to ground. If no resistances are less than 5 ohms, reconnect interior fuse panel and go to step 4).
- With ignition off, disconnect main power window switch connector. Turn ignition on. Measure voltage on Black/Red wire at main power window switch connector. If voltage is more than 10 volts, go to next step. If voltage is less than 10 volts, repair Black/Red wire between switch and interior fuse panel.
- With ignition off, remove 15 amp ROOM fuse from fuse panel. Disconnect main power window switch connector. Measure resistance of Black wire between main power switch connector and ground. If resistance is more than 5 ohms, repair Black wire. If resistance is less than 5 ohms, replace main control switch.
Courtesy of FORD MOTOR CO.