RE: Any other GM comms speeds?

["Malcolm Robb, LC 0112G" <Webmaster@lotus-carlton.fsnet.co.uk>]

I can select a 1995 Vauxhall/Opel Corsa C1.4NE on the Tech 1. It then says 
"Waiting for Data on MULTEC" . Other ECU's have different ECU names - the 
other ones I've seen so far are MOTRONIC and GMP4 MPFI. So my guess is that 
Vauxhall/Opel don't consider this ECU to be a GMP4, and (perhaps) have 
programmed this ECU to behave like a Bosch ! Anybody know what a MULTEC is 
? Or where there is a DIY_BOSCH_ECU type list ?

Tech1 appears to follow the Motronic (Bosch) startup sequence I described 
yesterday, or something very similar. The problem is I don't have a storage 
scope to see exactly what the startup (5 baud) character (s?) is/are. Even 
if I did, I don't have a 'Corsa 1.4NE' to see what the format of the data 
packet is. So I expect that's the end of any help I can give. Sorry.

But, If you have the TIS, then you can program your own cartridge for the 
Tech1 and use that to diagnose the ECU. The only requirements are that you 
have access to a Tech1 - and a spare MSC cartridge to program !!!. Of 
course, this costs over 2000 quid ($3000 US) to buy here in the UK, which 
takes all the fun out of tinkering with the ECU. Depends how desparate you 
are to use that ECU. IMHO, your better of putting the money towards the new 
Holden HSV

Cheers,
Malcolm Robb, LC 0112G

Psst.. Just between you me and the gatepost - I have a de-dongled copy of 
both TIS and EPC. Don't let Mr Vauxhall know. He'll throw all the toys out 
of his pram !

-----Original Message-----
From:	Ross Myers [SMTP:ponty@axis.jeack.com.au]
Sent:	Friday, June 16, 2000 8:57 AM
To:	gmecm@diy-efi.org
Subject:	Re: Any other GM comms speeds?



>OOOOHHHH...
>Just been perusing the Vauxhall Electronic Parts Catalogue, and found
>something of interest. The 16188269 is fitted to the Vauxhall/Opel Corsa
>with the C14NZ engine from Model year 1993 onwards. The full description
>is...
>
>"UNIT, CONTROL, THROTTLE BODY INJECTION (IDENT NC) (EXCL. AIR 
CONDITIONING)
>(EXCLUDING AUSTRIA) (EXCLUDING IMMOBILISER) Note: Used with manual
>transmission."
>
>I'll see if my Tech1 can select this engine type tonight.


Malcolm, spot on, that's what my Opel/Vauxhall TIS CD shows as well, only 
in
Oz they are badged as a Holden (Still got Opel on the Cam cover though!!).
I'd be 99% sure this is not OBD-II as others have suggested, the ECM does
not look complex enough. I have however seen the update to this ECM and 
that
may be OBD-II, well, it has 1Mb Flash on board anyway.

I'll wait on your Tech1 results.
Thanks,

Ross Myers

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