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#781
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Re: Memory dump of ECU
Isn't it meant to come back formatted perfectly?
Like... Code:
123400123400 123400123400 123400123400 123400123400 123400123400 Code:
123400123400 12340012340012 340012340012 340012340012 340012340012 340012340012 34001234001234 0012340012 34001234001234 001234001234 001234001234 001234001234 001234001234 00123400123400 123400123400 Cheers, Daniel. |
#782
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Re: Memory dump of ECU
No the formatting is just a side effect of the hex com tool. The numbers are all that is important.
As you seem to be getting good data back now, all the available software should work. Just to double-check, try querying a non-zero value in the ROM and ensure that it comes back consistantly. Like location 8120 (enter 78812000). That's the first byte of the fuel map. On my Legacy the value is 8A. The VWRX SelectMonitor software will only give you meaningfull values if the addresses in the SelectMonitor.ini file are correct for your ECU. Even then it can be a little bit buggy at times. I would expect the SelectMonitorDump program to work though. Does it read your ROM ID correctly?
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Subaru ECU and TCU Website 1992 Alcyone SVX Version L 1992 Alcyone SVX Version L 1994 Alcyone SVX S40-II 2004 Subaru Legacy 2.5 SE Sports Tourer 1996 Subaru Legacy 2.2 GX Wagon 1988 Subaru Justy J12 SL-II |
#783
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Re: Memory dump of ECU
Right if I try that.. I get...
Code:
TX>78812000<TX 812081812081 81208181208181 208181208181 208181208181 208181208181 208181208181 20818120818120 8181208181 Try it in RS232 Comm Tool (1335) Code:
TX>78133500<TX 133598133598 13359813359813 359813359813 359813359813 359813359813 359813359813 35981335981335 981335981335 ECU ID: 742FA1 Any other suggestions? How do you go about figuring out the addresses? (Especially since the dump tool doesn't work!) Wish there was some magic program that would go through the entire range and figure it all out for me! Phil, Do you have MSN/Yahoo or Skype messenger? Might be worthwhile sitting here and trying things. (I'm in my car right now.) Cheers, Daniel. |
#784
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Re: Memory dump of ECU
Quote:
Quote:
That ECU ID looks reasonable. It is similar to the one from my Legacy (7432A1). It looks like Evoscan is also reading good data. Quote:
Some of the locations on my Legacy ECU match the ones for ROMID 7332xx in the VWRX SelectMonitor.ini file, so you could try those. It may be worth talking to Vikash (vrg3) on the LegacyCentral website. He has done a lot of work on decoding the Legacy ECU. Sorry, I don't have any kind of Instant Messenger set up at work.
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Subaru ECU and TCU Website 1992 Alcyone SVX Version L 1992 Alcyone SVX Version L 1994 Alcyone SVX S40-II 2004 Subaru Legacy 2.5 SE Sports Tourer 1996 Subaru Legacy 2.2 GX Wagon 1988 Subaru Justy J12 SL-II |
#785
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Re: Memory dump of ECU
I've been talking to Hamish, the Evoscan guy. He can extract the parameter addresses from his subaru select monitor. Given the ECU ID, he can pull out the correct parameter addresses.
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Subaru ECU and TCU Website 1992 Alcyone SVX Version L 1992 Alcyone SVX Version L 1994 Alcyone SVX S40-II 2004 Subaru Legacy 2.5 SE Sports Tourer 1996 Subaru Legacy 2.2 GX Wagon 1988 Subaru Justy J12 SL-II Last edited by b3lha; 07-30-2008 at 04:27 AM. |
#786
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Re: Memory dump of ECU
Daniel,
SVXed just pointed out to me that Kevin released a new version of the VWRX software in July 2008. He has added the useful ability to log data to a file. The older version that I was using can't do that. But Ed is getting false data from it just like you are, there seems to be a problem with the VWRX software and the FTDI cables. I am going to try the new version on my car with my RS232 cable and see whether it works for me. Quote:
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Subaru ECU and TCU Website 1992 Alcyone SVX Version L 1992 Alcyone SVX Version L 1994 Alcyone SVX S40-II 2004 Subaru Legacy 2.5 SE Sports Tourer 1996 Subaru Legacy 2.2 GX Wagon 1988 Subaru Justy J12 SL-II Last edited by b3lha; 07-30-2008 at 04:32 AM. |
#787
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Re: Memory dump of ECU
Phil,
I must have the same version in that case. I sent an email to vgr3 Vikash from Legacy Central, asking how he found the parameter addresses, and if he was prepared to share them with us. It would be good if a list could be compiled (Similar to the Selectmonitor.ini file from Kevins VWRX Software) Showing ECU ID's alongside known parameters. I take it Hamish from Evoscan has all the Subaru Cartridges in that case? I'm just wondering if anyone else on this forum in the UK is interested in a cable Kit? So far I have three people interested over at UKLegacy.com Once I have 10 I can order up the bits and make them. (It's a fair bit of capital to invest if you don't get a return!) The kits would consist of USB-TTL, 92 Fix and ISO Harness. All tidied away nicely into a small box. They would go for between £35-£40 with postage included. Regards, Daniel. |
#788
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Re: Memory dump of ECU
You actually had a schematic of a much better hardware interface earlier on. Using an opamp comparator you are removing hysteresis. You want to do the opposite. The better schematic you had posted showed a shmitt trigger. I think that was Kashima's. That design will adjust the input to trigger on the correct signaling level and maintain hysteresis. In actuality you shouldn't need either. It's not a bad ttl signal. The voltage levels are what they are on purpose. The best thing to do is use the correct generation line driver/buffer/gate to match the signal.
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#789
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Re: Memory dump of ECU
Quote:
I know what a schmitt trigger does and I know what hysteresis means. But I am not 100% clear what you are saying. Could you explain further? Kashima's original design didn't have any kind of comparator, it was just a max232 and a voltage regulator. It worked great on my 94 SVX and my Legacy. But it picked up bad signal from my 92 SVX and several others. Then Calum showed us the comparator circuit and so far that seems to work perfectly on all the cars we have tried it with. On my problem car, I can let it run for 3 hours downloading the ROM and every byte of that 32K is perfect. However, if you have an even better design to contribute then I'll be happy to build it and try it out.
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Subaru ECU and TCU Website 1992 Alcyone SVX Version L 1992 Alcyone SVX Version L 1994 Alcyone SVX S40-II 2004 Subaru Legacy 2.5 SE Sports Tourer 1996 Subaru Legacy 2.2 GX Wagon 1988 Subaru Justy J12 SL-II |
#790
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Re: Memory dump of ECU
I did some testing.
There is definitely a problem with the VWRX software returning incorrect data. The older version does it too, even with an RS232 interface. I have checked with the hex com tool and the serial port is getting the correct data, but the program is displaying zeroes every few reads. I'll email Kevin about it and see whether he can fix it.
__________________
Subaru ECU and TCU Website 1992 Alcyone SVX Version L 1992 Alcyone SVX Version L 1994 Alcyone SVX S40-II 2004 Subaru Legacy 2.5 SE Sports Tourer 1996 Subaru Legacy 2.2 GX Wagon 1988 Subaru Justy J12 SL-II |
#791
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New windows software
I found this:
http://www.rensu.net/index.php?valik...select_monitor It is a Select Monitor tool for Polaris snowmobiles. Their engines are built by FHI and their ECUs use the Subaru protocol just like ours. The gauges don't mean anything because the parameter locations are different. But it has the ability to download the ECU ROM to a file - and that works 100%. So now we have a way to download the ROM without needing to run Linux.
__________________
Subaru ECU and TCU Website 1992 Alcyone SVX Version L 1992 Alcyone SVX Version L 1994 Alcyone SVX S40-II 2004 Subaru Legacy 2.5 SE Sports Tourer 1996 Subaru Legacy 2.2 GX Wagon 1988 Subaru Justy J12 SL-II |
#792
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Re: New windows software
Quote:
I may need to fire up the old laptop... thanks Tom |
#793
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Re: Memory dump of ECU
well just dled the program and I am running it on my desktop... Cable is just long enough to reach the car... lets see what I can come up with
Tom |
#794
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Re: Memory dump of ECU
depending upon how things go, I am going to be in the market for a decent writer/eraser. I have a couple stock ROMS around that can be erased so I would rather do some testing with them rather than buying/building adapter boards. Let me know if any of you have one you would like to sell or if you can point me in the direction of some good products...
Tom |
#795
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Re: Memory dump of ECU
I have access to a couple OBDII cars... I might try and see if I can get into them
Tom |
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