I've not looked at how this system works or the actual design related to the pump/motor but if you haven't done it yet I would check to make sure the nozzles themselves aren't plugged.
Here is a video of the trouble shooting steps that were taken on an older CR-V:
https://www.youtube.com/watch?v=rC02FSjvUg8
Back a few decades ago we used to pull a bristle out of a wire brush and use to open clogged nozzles.
Good Luck!
Here is a video of the trouble shooting steps that were taken on an older CR-V:
https://www.youtube.com/watch?v=rC02FSjvUg8
Back a few decades ago we used to pull a bristle out of a wire brush and use to open clogged nozzles.
Good Luck!