DIY_EFI Digest V4 #405

[soren]

> I was recently trained on the Nissan flash ECM's and was told that if you
> screw up the flash process, the ECM is dead.  Reason being that if the
first
> bit is lost, there is no way for the PC to find the start again.  That's
why
> it won't re-flash.  My friend who does this in the aftermarket said the
same
> thing as you about un-soldering the flash and re-flash it off the board.
> 
> In regards to what Nissan does if there is a glitch, they throw the ECM
away
> whole! 

	
	At the local GM training center they have a "black box" that can be used
to reflash a PCM off the car, if it happens to lose communication with the
scan tool while flashing and goes into permanent dead mode.

Soren