FADECs are a integral part of all modern engines and are therefore to a high degree engine specific and to a lesser degree programed for the airframe/system fitted to.
The scary part of these little computers is in their first two abreviations: FULL AUTHORITY digital engine control. That says it all .. if it does not want to give thrust, you can shove, hit, bang, slam anything you want in the cockpit, it will not give anything.
how about if you just select to alt on the eec then no need to shove ,hit or bang anything,also if the eec fails a resolver in the fmu schedules max cruise pwr .