I am having an issue with our 2013 XC70. The rear windshield washer no longer sprays. Not even a little.

I know the following:

1. Pump is good. I replaced it, and it sprays fine out of that.
2. Rear check-valve right by the tailgate is fine. I checked that. I removed it and washer fluid never makes it to that point.

I am guessing there is another check valve somewhere that is bad, but for the life of me I cannot find it.

Does anyone have any other ideas on what to check and/or a diagram of the hose routing?

Thanks!