The maps I am posting come from . . . . https://www.openstreetmap.org/#map=10/20.6347/-103.3635 . . . which I post because they are supposed to be the most up to date maps available. We use Streets & Trips 2013 all the time still but since MS has not produced it since 2013 it is not up to date.
Here is what that map looks like on S&T. We often visit friends around Chapala so are familiar with that area and some of the routes but have not driven 601 up through Tala to get back to 15D - I just offer it as another alternate route. I do know of people who have taken this route and like it.

Click For Full-Size Image.