How can you tell if your transmission control module has gone out?

First thing is to check to make sure you have the correct lube in your transmission. I had a quick lube put the wrong type of lube in my transmission and it created a problem that made it seem my transmission control was going out. Your Honda dealer should be able to provide you with the correct Transmission Fluid. Also a quick check of your tranny is while you are driving down the road push your gas pedal all the way to the floor. The car should downshift soon after doing this and accellerate. This quick check is accually mentioned in my car's owners manual.