2001 honda civic sedan one button on master power window switch does not work. Repair?

the button that controls the front passenger window will not work from drivers master switch i replaced it with a new master switch after market but problem still exsist. If you use the button on the front passenger door the window will go up and down. What could the problem be. Could it be the connection plug to the master switch? The other 3 buttons will work on switch.

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