2000 Ford Taurus

the fuse must be ok ..for the window to operate down ... I would be checking the switch is working correctly .. COMPONENT TESTS MASTER WINDOW CONTROL SWITCH Remove master window control switch from vehicle. Check continuity between specified terminals while operating switch to specified position. See MASTER WINDOW CONTROL SWITCH TESTING table. See Fig. 5 . Replace master window control switch if continuity between specified terminals is not as specified. MASTER WINDOW CONTROL SWITCH TESTING Switch Position....Between Terminals No.....Continuity One-Touch Down Down...........................4 & 8 (1) ...............Yes Neutral..........................4 & 8 (1)............... No Lock-Out Circuit Locked..........................1 & 4....................Yes Unlocked.......................1 & 4.....................No Driver's Side Up................................4 & 6 (1) ..............Yes Down............................4 & 7 (1).............. Yes Neutral....................2 & 6 (1) ; 2 &7 (1) ......Yes Passenger's Side Up................................4 & 4 (1) ...............Yes Down............................3 & 4 (1) ................Yes Neutral.................2 (1) & 4 (1) ; 2 (1) & 3 (1) Yes Left Rear Up.................................4 & 5.....................Yes Down.............................4 & 6.....................Yes Neutral...........................2 (1) & 5; 2 (1) & 6...Yes Right Rear Up..................................3 & 4...................Yes Down..............................2 & 4....................Yes Neutral.........................2 (1) & 3; 2 (1) & 2...Yes (1)Location of terminal is found in C504a connector only.