ABS Controller Multiple Diagnostic Code Storage Order?
ABS Controller Multiple Diagnostic Code Storage Order?
(OP)
So far as ABS controllers and multiple diagnostic codes being stored in its memory...
Are these codes stored in any order? Like first code to display would be the oldest code stored?
Or the other way around. The first code displayed would be the newest code stored into the memory?
(Specifically a 94 GMC 1500 K Suburban with 4 wheel anti-lock brakes. But also in general.)
Are these codes stored in any order? Like first code to display would be the oldest code stored?
Or the other way around. The first code displayed would be the newest code stored into the memory?
(Specifically a 94 GMC 1500 K Suburban with 4 wheel anti-lock brakes. But also in general.)





RE: ABS Controller Multiple Diagnostic Code Storage Order?
The factory shop manual should tell you more.
Mike Halloran
Pembroke Pines, FL, USA
RE: ABS Controller Multiple Diagnostic Code Storage Order?
These manuals could do a better job of explaining how electronic things work in general.
RE: ABS Controller Multiple Diagnostic Code Storage Order?
can be first in last out??.
Why do they charge co much for old outdated computers with
limited functionality and programmability.
Stick in a dual core with 4gig ram and software with vehicle management software.
on the fly programming and modifications.
RE: ABS Controller Multiple Diagnostic Code Storage Order?
Cheers
Greg Locock
SIG:Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips.
RE: ABS Controller Multiple Diagnostic Code Storage Order?
" on the fly programming and modifications "
Not directed at you personally, Crazychris, but I always laugh at how some people think that they can do a better job than the OEM engineers that developed these systems in the first place.
MS
RE: ABS Controller Multiple Diagnostic Code Storage Order?
Dan - Owner

http://www.Hi-TecDesigns.com
RE: ABS Controller Multiple Diagnostic Code Storage Order?
For the system under discussion here, it has a rather limited function and the processor is apparently fast enough to get the job done. No point in bloating it to give it potential capabilities it won't ever need or use. Nor do I see much reason to tweak this particular system in this particular vehicle.
As for "on the fly programming and modifications", I'm sure that there are certification, durability, and tampering issues at stake if I may assume that you were including ECM/PCM "tuning" at that point.
bill - the diagnosis logic for one of the codes may ask if others are present at various decision points. If that is the case, the order in which the codes were stored may not matter.
Norm
RE: ABS Controller Multiple Diagnostic Code Storage Order?
This would be handy to know with a used vehicle which may have old diagnostic codes "hanging around" from problems which were fixed a long time ago, but the codes possibly not cleared.
In this case see which codes are present (write them down), then clear all codes, then drive vehicle and see which new codes pop up. See if they are different or the same.
And of course if this had been your vehicle for a long time and you knew all the previous codes (if any) were cleared, then this would not be necessary. But of course clear the codes after the problem has been resolved.