There are two very different SBEC2 PCB---Wow are they different
Hello All,
First I would like to thank those who donated ECU to my SBEC2 research project. You are the BEST.
I have learned a TON over the last 6-8 months.
I would also like to thank those in the community who helped the cause.
I will be writing up my finding over the next week or so but thought I would send out a primer.
A few months back I noticed that there are two different PCB used for the SBEC2. http://www.turbo-mopar.com/forums/sh...=1#post1148391
SBEC2-A ........PCB 4632377, I have both V6 and Turbo version. This board does not have an latch chip. My examples use the 87C257.
SBEC2-B ........PCB 4517652 are used on V6 and EFI and use a 373 chip (commonly called a latch chip) that is near the EPROM.
They are very different and need different hardware for flashing but now I am able to flash both from MPTune using my new modified flash module, Thanks Morris for the MPTune support.
More background to follow.:eyebrows:
Re: There are two very different SBEC2 PCB---Wow are they different
Tag for exciting news. I really appreciate you spear heading this. The idea of being able to use a v6 computer is incredible. Not only should they be a decent upgrade to the 84 to 89 stuff, but they're still everywhere and cheap.
Re: There are two very different SBEC2 PCB---Wow are they different
Quote:
Originally Posted by
cordes
Tag for exciting news. I really appreciate you spear heading this. The idea of being able to use a v6 computer is incredible. Not only should they be a decent upgrade to the 84 to 89 stuff, but they're still everywhere and cheap.
Thanks Brian. This is exactly why I am doing this. I have started the design on a new flash module. I am at the concept stage.
The idea is a single PCB that will work on SMEC,SBEC and both SBEC2-A and B with improved speed over existing flash modules.
Re: There are two very different SBEC2 PCB---Wow are they different
Miles, et al, I wonder if the change is also where the speed control input switches changed. From what I have found, the first batch of steering wheel control switch vehicles had a latching (mechanical) on-off switch that worked like the turn signal lever switches, set and resume were still momentary contact like the stalk switch. The later ones the on-off is a momentary contact switch. The later ones have a single wire connection to the SBEC, where the older ones had switches that emulated the stalk. Change seems to be with the 1992 MY from what I can tell.
