How to check wire continuity on robot side

The startup procedure specifies "Check continuity on all wires and connectors for each motor, encoder and limit switch." I was able to check for continuity of everything in the electrical panel, but on the robotside, the electrical contacts of the limit switches are covered by liquid electrical tape, and most motor and encoder wires are attached to the motor via connectors and thus can't be unplugged. Therefore I'm wondering how to check for continuity on the robot side? Is it just check what you can get access to?

Thanks,

Yifei