Hey. I wondered if anybody could help me...

I have a ford focus on a 54 plate. My drivers door window doesn't open but the passenger side does. I have looked on Internet and someone said that it wouldn't be a fuse as the passenger side works and its on the same circuit and fuse.

So how would I check to see if the motor is working?

Also would I be able to plug a test lead into the window button and activate it to see if it has power. If not what do I check then? If so how would I check the motor?

Does anybody know what I will need to remove the door trim ?