Transmission wiring diagrams please?

The problem can be the sensing part of the VSS has fallen off. Can you remove the sensor and look inside where the sensor goes to see if you can tell what the sensor is supposed to be sensing?

Here is a wiring diagram and a guide so you can double check your work:

https://www.2carpros.com/articles/how-to-check-wiring

Please let us know what you find. We are interested to see what it is.

Cheers, Ken