If the wipers work you are getting 24 to the motor, there are 3 connectors in the A-pillar P W G, Park,washer, ground.
washer is wire 71, 27 park, 57 grnd
personally, replace the squirter motor...of you can't hear it go on and off, it's 95% chance it's bad.
no uncommon, they get gunked up I find.