What happens when you connect the A and B terminals on the diagnostics plug (to get the code off the ecm) then start the car the repair manual says do not start the car while the A and B are connected, does it burn any fuses? wires? ecm? thanks

 

Nothing is burnt or damaged. It's just not recommended to drive longer distances in this mode since it doesn't control the engine properly.

 

^ok, good, thanks ^