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Re: PCM Questions
"Shawn R. Lin" wrote:
>
> Anyone have info on a 16196401 PCM? It was used 94-95 in the 3.4 DOHC
> engine.
> On the outside it LOOKS like a 1227727. It is the successor to the
> 16149396 (used 91-93 on the 3.4 DOHC), which I believe is just a 1227727
> with extra SRAM. The big change I noted is SFI.
I've seen a 16196401, and somewhere I have a list of the chips on it's
circuit board. It is somewhat similar to the 1228253 SFI ECM. The
16196401 is a P4 - one of the last.
> So I thought maybe the 6401 is a 7727 with SRAM and additional quad
> drivers for SFI, but then I looked at the pinouts, and it's 100%
> different.
Quad drivers aren't used to drive injectors. Injectors get their own
transistors. Look at the schematics on my web pages.
--
Ludis Langens ludis (at) cruzers (dot) com
Mac, Fiero, & engine controller goodies: http://www.cruzers.com/~ludis/
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