I wasn't talking about rotating the wiper **** to make the blade move, just to press it to engage the washer. If rotating it does not work to make the wiper run, and pressing it does not work to make the washer squirt, I'd suspect something in the **** on the dash.
Before doing dash work though, I'd pull the rear door panel, pull the plug to the motor assembly, and measure voltages when you operate the dash switch. The motor either doesn't run because it's not getting power, or is getting power and is indeed defective. Figure that out to see what to do next.