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| Scangauge II on CRD http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=26897 |
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| Author: | hawk521 [ Mon Nov 26, 2007 11:27 am ] |
| Post subject: | Scangauge II on CRD |
Has anyone solved the problem with the Scangauge II randomly freezing up on the CRD? If I set mine to PIDS:SUPPORTED and RATE:NORMAL it seems to run longer between lockups - but on most trips over 10 minutes it still freezes up eventually. This is such a cool device for the CRD I'm hopeful a solution could be found. Doesn't seem right that the CRD is the only late model vehicle that the SGII locks up on! 
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| Author: | Cowcatcher [ Mon Nov 26, 2007 11:57 am ] |
| Post subject: | |
I don't think it is the "only" one that does. It is my impression that several vehicles use the multiple processor convention that the CRD does to reduce cost and none of them will continously report to the OBDII. It would be nice if we could solve the problem though. I think part of the solution is in getting the SGII to not poll as often. |
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| Author: | Bill.Barg [ Mon Nov 26, 2007 12:44 pm ] |
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I have had 2 tank fills now without lock up on the SGII, latest firmware release 3.15 I display 3 gauges, and the fourth is an "Xgauge". The Xgauge I use is the "tank average MPG". I figure (total speculation) this works to minimise the number of queries sent by the SGII to the bus, since the "Trip" functions are always working and have a fixed number of queries, minimising the additional queries from the "gauge" functions, brings us into a stable mode (low probability of overloading the BUS with queries. I use FIA FWT MAP and the user prongrammed Xgauge "tank mpg" |
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| Author: | hawk521 [ Mon Nov 26, 2007 2:22 pm ] |
| Post subject: | |
Bill, I will be giving that a try. I've tended to switch gauge displays often. So far I have not seen a correlation to what causes hangups, but your theory is worth a patient trial. What Fuel setting do you use (DIESELa or DIESELb)? |
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| Author: | Bill.Barg [ Mon Nov 26, 2007 3:33 pm ] |
| Post subject: | |
Diesel A |
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| Author: | Doctor B [ Thu Jun 26, 2008 11:23 pm ] |
| Post subject: | So? Whahappen? |
So, I'm dying to see what happened with that fix? I'm about to send mine back because it's doing this. Funny thing, I didn't have this problem the first week or two I had the SGII - just popped up after a visit to the stealership for a tranny svc - but I cable tied the SGII to the OBII port so they wouldn't flash it. Odd, I don't know if they did anything to it or not - funny coincidence though. So now it regularly locks up and freezes anywhere from 5-20 minutes into a drive. And only a car restart fixes it, no unplugging resetting settings does anything. I'll try those gauges you set tomorrow, and send it back to SG on Saturday if it's still screwy. Could it be just some SGII units are bad? Like a weak component that heats up or something? It was also a hot day that it started acting up. |
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| Author: | gmctd [ Fri Jun 27, 2008 1:30 am ] |
| Post subject: | |
No - it's buss contention - all the up's on the KJ intra-net are addressed to respond in turn as polled - SGII is like a peeping tom or eavesdropper, but with the ability to heckle the conversation(s) - that communicatus interruptus is what causes the trans to drop a gear or two, and other symptoms |
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| Author: | dirtmover [ Fri Jun 27, 2008 9:09 am ] |
| Post subject: | |
gmctd wrote: No - it's buss contention -
But it's bus contention that is caused by the SG not adhering to the correct protocol. OK, this protocol may not be publicly available but the DRBIII has no such issues. |
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| Author: | fastRob [ Fri Jun 27, 2008 9:13 am ] |
| Post subject: | DRBIII, Who's That? |
dirtmover wrote: gmctd wrote: No - it's buss contention - But it's bus contention that is caused by the SG not adhering to the correct protocol. OK, this protocol may not be publicly available but the DRBIII has no such issues. DRBIII, Who's That? |
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| Author: | Cowcatcher [ Fri Jun 27, 2008 9:39 am ] |
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Lets keep this going as I would certainly like a fully functioning SGII. |
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| Author: | geordi [ Fri Jun 27, 2008 9:44 am ] |
| Post subject: | |
Mopar's own scan tool. Mega $$$ |
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| Author: | gmctd [ Fri Jun 27, 2008 1:43 pm ] |
| Post subject: | |
DRBIII logs into the intra-net, recognizes and conforms to the buss protocol - even makes the buss recognize and conform to it's own desires and commands - SGII does not login: it's a peeping tom, getting caught every so often - up's on the intra-net are programmed to recover (prevents accidents) - SGII is programmed to 'peep'-only, regardless of whichever other up is currently using the buss(es), so cannot recover, as indicated by re-boot from start-only for full function recovery SGII is 169 - DRB!!! is 3000 - Starmobile is 3600 - Starscan is 4400 - guess which scantool programs have simple-function routines, which have enhanced................... |
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| Author: | Doctor B [ Sat Jun 28, 2008 1:02 pm ] |
| Post subject: | Yeah OK But.... |
But still - I haven't heard results from Bill Bargs setup above; Using the 2 temps, MAP, and Xgauge's MPG. He seemed to say using this combo made it stable and not lose com. Or am I missing something? By the way - How do you setup xgauge for that? The preset MPG locks up as you all know. I need to read a bit more on that. I'm just being lazy asking for the answer. Also - is the latest factory flash a fix? SGII says it is. And I don't know if I have it or not. I thought I did as I bought this rig used a few weeks ago and no TSB's are outstanding on the carfax. Some say you can tell by when it kicks to OD gear - mine does it at just above 60. Is that the old or new software? Feels plenty torquey. Anyway - I'd appreciate anything you guys can tell me. |
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| Author: | Bill.Barg [ Sat Jun 28, 2008 9:12 pm ] |
| Post subject: | Re: Yeah OK But.... |
Doctor B wrote: But still - I haven't heard results from Bill Bargs setup above;
Using the 2 temps, MAP, and Xgauge's MPG. He seemed to say using this combo made it stable and not lose com. Or am I missing something? . The trick did not work out in the long run (3 readouts and 1 calculated value). It still locked up eventually. Also... I had some strange electrical behaviour with thte SG plugged in..... CEL and limp mode that I thought may have been due to the SG... so I have not used it for 5000 miles. (no CEL and limp since... but this is not conclusive, really). Anyway.... I have the SG for part time diagnosis use now. |
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| Author: | tjkj2002 [ Sat Jun 28, 2008 10:04 pm ] |
| Post subject: | |
gmctd wrote: DRBIII logs into the intra-net, recognizes and conforms to the buss protocol - even makes the buss recognize and conform to it's own desires and commands - SGII does not login: it's a peeping tom, getting caught every so often - up's on the intra-net are programmed to recover (prevents accidents) - SGII is programmed to 'peep'-only, regardless of whichever other up is currently using the buss(es), so cannot recover, as indicated by re-boot from start-only for full function recovery No problems with long term hookups using Ethos(Snap On) or Genesis systems either,not as good as the DRBIII but dang near close,if available it reads/displays all live data,graghs O2 sensor/other sensors long term memory,and also freeze frame with print options.
SGII is 169 - DRB!!! is 3000 - Starmobile is 3600 - Starscan is 4400 - guess which scantool programs have simple-function routines, which have enhanced................... |
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| Author: | gmctd [ Sun Jun 29, 2008 9:24 am ] |
| Post subject: | |
Your sig doesn't indicate KJ CRD - any references to gassers (patooie!) are not compatible in any way, shape, or form in this forum - f.e., SGII has no problems in any gasser (ditto!) application, except where specified by SG eng........................ |
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| Author: | tjkj2002 [ Sun Jun 29, 2008 9:39 am ] |
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gmctd wrote: Your sig doesn't indicate KJ CRD - any references to gassers (patooie!) are not compatible in any way, shape, or form in this forum - f.e., SGII has no problems in any gasser (ditto!) application, except where specified by SG eng........................ Might want to keep yourself in check,I work on deisels,and yes I have worked on a CRD,at my job and having the right tools instead of some hack tool(which the scanguage is,just junk) goes along way.I had a '07 CTD with a driveability issue and had my cheap $200 scanner hooked up to it for 4 days with zero issues and displays more then the scanguage does.
Why you care anyway,you DON"T OWN a CRD either  .
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| Author: | Goglio704 [ Sun Jun 29, 2008 10:18 am ] |
| Post subject: | |
Actually, I think GMCTD does own, or at least possess, a CRD now. And a genuine dealer scan tool. |
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| Author: | Doctor B [ Sun Jun 29, 2008 10:41 am ] |
| Post subject: | Hmm, so what about the flash? |
Thanks for the info. So, it sounds like the SGII simply won't work for long without locking up. But what about the flash they claim makes it compatible? Does this mean I don't have the latest flash? It's one I don't think I want because it will neuter me, but is the new flash a fix for the SGII? I think I'm going to return it and look into this Ethos thingy or Genesis thingy, or maybe I'll just use my laptop and the ELM for real stuff, and a cheapo scanner from Harbor Freight to clear the MIL when I drive. Or maybe try the plate fix for the EGR. All this was simply for the MIL light anyway, from doing the ORM. |
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| Author: | gmctd [ Sun Jun 29, 2008 11:56 am ] |
| Post subject: | |
The flash you refer to was to correct a dealer-installed TSB bug which prevented aftermarket diagnostic scantool access, which would also affect the SGII - however, the SGII problems are caused by the basic architecture of the KJ CRD intra-net, with a Bosch ECM talking to the DCJ\Mitsu TCM and associated xCM's and the Bendix ABS module - the problems don't appear to occur where the ECM is also DCJ Won't help you for right now, but I intend to investgate this further, after I recoop from 4wks of hard labor, incl prepping (IP, gp's, injectors, timing chainset, ac, etc) a neighbor's '83 6.2L Diesel Sub for a trip to Kalifornia, down the Baja, and back again - just need to attach various rocket science apparatii to the several communication busses at the DLC for observation and analysis of the KJ CRD intra-net - as I have noone to drive my KJ while I monitor processes, I'll prolly jack it up and run it in place, as the drivetrain needs to be fully functioning in order to trigger any events - this will also help to reveal if the ABS is the culprit, as I suspect, as the tests can be performed with no braking events, eliminating any ABS interaction, and with braking events - those will of necessity be run in 4wd to get input from all wheel sensors Why do I care? To prevent misinfo from DCJ dealerships and other "professional" sources from confusing the issues with the KJ CRD, which can and has resulted in damaged KJ's, and owner dissatisfaction and disposal of a perfectly viable vehicle - check my sig for specs of my rehabilitated runner. For now it's all free, but rest assured, I will keep myself in check(s), soon as I open my shop, thank you very much................. 
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