Help! eFH no longer goes up

Today, after a painting, I reassembled my car. So both window frames on the left and make sure that no cable is clamped, then the wire harnesses on and built into the doors. Then the front door panel is attached. And that's when it started, all 5 eFH plugs were plugged into the eFH operation and when I was learning all eFH's I found myself firmly on the left side of the car, but I didn't go up any more, from the driver's seat. From the back left we go down and up. Hmm? So fixed with test lamp measured: from the front comes electricity for down and for high does not, from behind there is up &. Down power.
Is there still a way to measure current between them, and not at the respective ends, to locate the interruption more accurately?