Bosch Dishwasher SHU5312UC-cycle not advancing.

My dishwasher stopped advancing at 49 minutes (regular cycle). Water was left in the bottom of the unit.
I read this site (and the user's manual) where it said to check the drain, it might be clogged and therefore won't advance to rinse.
I disconnected the hose from the garbage disposal and checked it as far back as I could.
From inside, I took out the filters, etc, and found stuff in the little propeller, which I cleaned.
When I turned it on again to test, it started at 68 minutes and counted down one minute to 67, then stopped counting down. The unit continued to run, but it was no longer adding water to the unit.
I was going to change out the control module, but I have the following questions:
Is this the next logical step or have I jumped ahead to farin my trouble shooting steps?
Would the numbers still light if the control module weren't working?
How do I take the cover panel of the door off in order to access the electronics? The explosion diagrams at the Bosch site don't quite indicate this.

Thanks for your help.