Hi, I've got exactly the same problem. My window roll down, but not up, I checked voltage, I have +12 when rolling down, but -6 when rolling up, which is not enough. I Jumped the wires to get my window up and it works. I'd like to check the wire between door and B Pillar, but I don't know how. Should I Remove the door entirely ? I can't find it in the service manual. Thanks
