What engine model/year do you have? you mention thunderbolt 4, please know the diagram above is thunderbolt 5.
At this time I can't recall there being any published specifications for the thunderbolt 4 or 5 system.
Like mentioned, the best way to know if the module is advancing is to watch it using a timing light like you'd set ignition timing or more importantly checking/setting total advance timing which those specs might be available when we know your engine model.
One quick test to know if your ignition model wasn't working at all causing a no start situation, you could use a test light connected to 12v battery and touch the negative side of the coil... The test light should be flashing. With an open mind of your ignition system and ignoring the tests below are for a Dodge vehicle, see test 4 for an example.
http://troubleshootmyvehicle.com/chr...gnition-coil-3
But since your engine runs, the test above should be invalid to you....but it's still easy to check otherwise.
Though I'm not sure of this theory but a thought just crossed my mind, it seems feasible that maybe the test light will flash faster as you advance the RPM should the timing go up. < If you try it, let us know.
