The Control Module or PCM ( Power Control Module) is your computer and it's not cheap.
I did a Google search and even on there under "failure to start" it was recommended to replace the PCM. We/you haven't the equipment to trace down where the fault may really be. You might have to break down and have it professionally diagnosed either by the dealer or local shop.
Chrysler Repair: follow-up Power control module, engine won't start