Tony,
I'm in France, and actually for the next 6 weeks in NZ... But I can help you.
See the attached picture. It is an excerpt from a French motorcycle repair article showing how to test an ICu ...
If you can't understand th epart, I'll translate it for you.
Hope this will help !
Thank you, a very kind offer.
My problem was that I simply refused too accept what testing and logic told me.
I had two brand new modules, neither worked. I refused to accept that I have been sent two dead modules from unrelated sellers, one of whom has an excellent reputation.
Because of my refusal to accept that both modules were dead I searched for other causes and eventually decided to (unfairly as it turn out) blame the ignition harness on my bike. I bought a new harness and they still tested dead.
Then I rebuilt a beancan I happened to have which worked perfectly with my existing module but failed to produce a spark from either of my new heavy duty modules.
In a state of absolute despair I further tested both modules by putting them in a VW car that uses a known compatible module - both were dead, but my existing module fired up the car perfectly.
I was finally forced to accept that both of my brand new heavy duty modules are absolutely dead.
I have made a test rig to test beancans but baulked on making a rig to test modules due to the cost of the 7 way JPT socket, but as I now have a spare ignition harness I think I will now build a combined module and bean can tester along the lines of that suggested in the image you kindly posted.
A 9v battery can supply more than enough power to drive both the module and the hall effect and it is easy to rig the wiring so that a module can be tested in the absence of a hall effect and a hall effect tested in the absence of a module, two switches should do it.