Thank you for the response! You pack a lot of information into tight sentences.
Here is where I am at:
Maytag Centennial Washer MVWC350AW1 Spin Issue - Wet Clothes
Verified complaint: Normal/regular cycle ends with clothes soaking wet, one rinse or two. Other cycles (delicate, rinse and spin) work fine.
Diagnostic fault code displayed: F7 E1 (Basket Speed Sensor). Clears, and returns only when a 90-minute full cycle is run.
Automatic test mode: Function "Shifter Moves To Spin Position" seems quiet. Other functions fine and clothes are spun.
Manual test mode: Low spin and high spin do not appear to spin. Agitation cycles ok.
Physical inspection: Drive belt, harnesses, connections appear ok. Checked under the zip ties I could reach. Basket does not bind. No excessive soap residue.
Test #3A: Drive System - Shifter: These electrical tests are where I have questions, as I have little experience here.
Found J16 connector on main control unit. Ohmeter across pins 1 and 2 should be 2k-3.5k ohms. Reads infinite resistance, assuming I am using my analog meter correctly.
Could not find J2 connector. Is there a diagram somewhere?
To perform continuity tests, do I need to connect the meter from the main control board on the top of the machine to the shifter assembly on the bottom of the machine? That is longer than my meter will reach. Is there a YouTube video showing how to perform these tests?
I believe I am I far enough along that the first part swap solution is to replace the shifter assembly, part number W1000635. This means assuming no issues with a wiring harness, the optical sensor, or the main control unit, or anything else I did not test. I'd still like to learn how to properly perform electrical tests, if you can point me in that direction.
I ordered the shifter assembly; replacement will be this week's task. Already watched two videos on how to do that.
Thank you again.