I see that you guys are testing with the machine on. I had a no-heat problem (after replacing the belt) that I successfully traced using "a continuity tester" which was the OHM reader on an up-to-date (yellow w/ battery) volt meter. I needed a helper when the wires went from the back to under the drum where the motor is. (Drum was out.)
I strongly NOT suggest using full power for testing continuity (but OK on cars w/ 12v) esp if there is a possibility of a kid or pet touching the inner parts, but using an OHM meter. You can make one by wiring a flashlight bulb to a battery with one wire, and to two nails from the batter and the other lead of the light bulb (which I have done many times).