I've read a lot of threads on how to get the Catalyst test to run, but I'm wondering if there is any way to tell that the test is at least attempting to run. It is, like so many others, the one test that I need to complete before emissions testing. I guess I would feel better if I knew that the test was actually attempting to run. According to documentation, it appears that it is supposed to dither the fuel mixture while performing the test, but I'm not sure which data points to look at.

Any input would be greatly appreciated.