Nissan Repair: 1993 Nissan Maxima Power Window, power window switch, nissan maxima

Question
I was gived a 1993 Nissan Maxima. But the Power Window Switch in driver side have some problem. The two button cotrol the left front and left rear window cannot work. The other buttons are OK. And the window switch in left rear door also cannot work but I can hear the noise of the motor. So I cannot make sure I should change the Master Window Switch or the left front motor. Is the problem for the left rear window on the regulator? Please help me to diagnose. Thanks!  

Answer
Rui,

You probably have two problems here.  The first would be the master switch and the second would be the regulator on the back window.  I would change the master switch first as it is much cheaper.  The second thing is to take the back door apart and check the mechanism to see if there is something jamming up the works.  But, it is probably the regulator since you can hear noise but the window does not move.