A very old video I found in my archives from past phones. One of the first times I was allowed to diagnose a vehicle on my own, in fact. Customer stated their rear window washer would not spray. I started checking the lines at the front and found the pump worked, but nothing made it to the rear of the vehicle. After inspecting all lines at the rear and finding no issues, I got approval to drop the headliner so I could inspect the rest of the line. Fortunately I found the issue before too long.