How to test a power window switch?

What is your question?

2002 Ford Ranger XLT 4x4 ... Passenger Window goes down but not back up. Changed Regulator and Motor. Changed Switch. All new stuff does just as the old. Really confusing. Any thoughts?

What makes this problem better or worse?

N/A

How long has your 2002 Ford Ranger had this problem?

Since I bought it used.