Ok, I'm back in from my home made add-a-leaf project, and looking at the FSM.
Unfortunately, it's pretty clear that the design was changed in 97, and the delay module is now built into the wiper switch.
If I read the diagrams right (not guaranteed) it looks as if you should get the park signal on motor terminal 1 (dark blue). It should be +12 volts with ignition on independent of the wiper switch. If you don't get it there, check the other terminals in case my reading is wrong, but there should be a +12 volt park voltage at the motor. If not, you'll need to check the wiring. If there is, and the motor doesn't park, it's the motor. If there is no voltage, you need to trace the wiring back to the junction block, where it should run off the same circuit breaker as the motor does.
According to the FSM, the motor these days has a self-resetting circuit breaker, and is "non repairable." I don't know if it's actually changed since the old pre-97 motor, which could at least be opened. I know the "non repairable" rear wiper on my 99 is actually riveted together, and in order to lube the shaft I had to mill the rivets out and replace them later with screws. However, if the cover over the gearbox is still attached with screws, it's worth opening up and seeing if you can tweak the contacts. If it's riveted, you're on your own. Beware of bending the cover, and be prepared to modify screw heads to fit the contours when you put it back together.