98 Caravan passenger Power window

1998 Dodge Caravan with power windows. My van has the two power windows up front and the two power vents in the back. they all work except the passenger, I have checked all fuses which are good. there is absolutley no noise coming from the motor in that door. I took off the door panel to see if anything looked broken or unplugged. everything looked ok. Does anybody have any ideas on this? I am used to hearing some kind of noises when a window motor went but with this there is nothing, there is a power button on both doors and both do not do anything. Is there a way to tell if it is the motor without buying one then finding out that was not it?
Thanks for any help...
Moon

Remove the door panel and apply 12volts direct to the motor or pull the wires off the back of the switch and do the same thing. If the motor is good then it should operate. If not then the motor is bad and will need replaced. If the motor operates then you have a problem with the wiring somewhere in the system.