On Thu, 2007-06-28 at 14:58 +0100, Alan B. Pearce wrote:
> >I believe the Vovlos suffered from failure of the electronic
> >throttle module rather than the ECU.  This is part of the
> >"drive by wire" system which I have always considered a very
> >poor idea.  Give me a throttle cable any day of the week.
> 
> OK, but in a simplified way I see the two as synonymous, in that the 'wires' 
> are still going into a lump of electronics that control the engine ...
> 
> It may be a separate module that does the throttle control, to the module 
> that does the engine management, but I suspect they are all inside the same 
> box (but I haven't looked under the hood of a Volvo to find out) ... 

I doubt that very much.

It's very common on cars that each "feature" has it's own "computer".
I'd personally be surprised if a throttle by wire feature was contained
in the main ECU. It takes quite a while for the auto industry to
"integrate" separate modules.

TTYL



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