We have worked with Togo cad data in the past and have always found them to be problematic. We have a services group that can help you recreate the data in Pro/E. Please contact me at (201) 995 9285 if you are interested in this.
I was just talking with my co-worker about different CAD programs I have used in the past and Togo CAD popped up.
I remember being a resident engineering in Toyota, Japan when they rolled out Togo. I ended up using it for a couple of years.
I can certainly see why one would have had a hard time importing togo iges files. togo was not a solid modeling program. it was wireframe with surface. most of the time you would have the outer skin and then would have to reference a section view to see the thickness.
Did any of you use togo cad? what year did Toyota come to their senses and dump it?