And you don't hear the motor when you try to activate it?
I'd check the owner's manual to see if it has its own fuse first, I can't remember.
If the fuse is ok, I think I remember seeing a prior post on this, where the person discovered that it was a harness issue somewhere close to where the wires go from the door into the body, and they had to repair the harness.
^^^^^yup, this. Same issues I had. If one is broken, others will soon follow. I've had to repair 4 of the wires now and the wiper wire couple times now. This last repair, I used some cold temp fine strand wires that will hold up to the freezing weathers up here in Canada. Been two winters, so far so good.
My 03 had several wires break at this same point. First repair failed in short order, so second time the mechanic spliced in extension wires to the whole set to reduce strain. Apparently, both flexing and tension are culprits.
I pulled the green wire out for the photo. To repair I slit the rubber boot lengthwise and soldered in a longer wire to prevent it stretching again. Tape up the boot and you’re good. Been a couple years now and still working.