128838 ANFK ECM infos????

[WEG1192 at aol.com]

<< Volker wrote:
 > 
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 > 
 > Hi folks!
 > 
 > I've got an Isuzu Rodeo 1992 3.1l V6 which is being operated by a
 > 122838 (ANFK) ECM (I don't know if it important but this one is
 > controlling a Model 220 TBI).
 > 
 > This ECM does have a 12 Pin GM connector with pins A, B and E
 > connected (other connectors are missing).
 > 
 > Does anybody have some information about that ECM? I'm highly
 > interested in the serial data stream protocol at ALDL. Also I don't
 > have any info at all whether or not this ECM is supporting the 160
 > baud or 8192 baud interface (it's my guess that it's the 160 baud I/F
 > because I found the pin E to drive the 160 baud line at all documents
 > I found on the net).
 > 
 > The same ECM has been widely used in GM cars (years 1988 to 1993 or
 > so), for example Pontiac, Chevrolet and GMC cars should have the same
 > ECM.
 > 
 > Again, does anybody have some (or lots! *s*) information about it? I
 > want to build a scan tool for it or find a working one but w/o any
 > knowlegde of the device..... you know!?
 > 
 > Thanks,
 > 
 > Volker
 > 
 > Volker    /    >>

My Actron III scantool works with this ECM part # using the 1989 Camaro 5.0L 
setting. My dad has a 1991 Rodeo. What you may want to do is swap in a 
1227747 for re-tuning. The pinouts are very nearly identical.

JW
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