There was plenty of fluid, the problem was the pump did not activate when the button was pushed.
Once you remove the driver's headlight, there is plenty of access to the reservoir bottle and the pump connector. I unsnapped the connector, used a voltmeter and confirmed the connector was getting 12V when the button was pushed. Reconnected it, pump still dead.
So I removed the bottle to test the pump itself. Removed bottle, removed pump, reconnected the pump solo to the connector, still dead.
Hooked up 12V directly from the battery to the pump and it works. Switched polarities, it goes slower in one direction than the other. Ran it back and forth a few times, reinstalled it, works great. Buttoned it up.
I'm guessing the pump shaft bearings are worn and were jammed. Since a new pump is like $75 at the dealer and I figure most junkyard pups are as much of a gamble as the one in there now, let's see how long it lasts. If it locks up again soon I'll replace it. Easy enough to take in and out.