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#16
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#17
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y'all lost me at " Memory Dump of ECU "
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i'm too svxy for my car rob 92 ebony 4.44's rock !! |
#18
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Here's another drawing with the pin numbers (lower connector with 9 pins): <- This one. View is looking at the contact pins on the CAR'S harness (wires pointing away from you). On the aftermarket harness, this would be the side with the wires pointing towards you, pins pointing away. For the pins in question, the EIA standard wire colors are: 2 — White => TransmitAs I suggested earlier, since you're going to extract the unneeded wires anyway, you might as well transplant the Red and Black wires from the 7-pin connector into pins 5 and 9, respectively. The attachment to this post is the same gif as above, in case the link goes bad. Drawing courtesy of NASIOC's vrg3, on this page that shows the entire pin-out of the radio connectors.
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David C. 1996 Laguna Blue Pearl SVX L AWD See my home page for SVX radio install/removal instructions and wiring harnesses Last edited by SVXdc; 01-25-2009 at 05:01 PM. Reason: Original link to pin-out had died |
#19
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43_21 98765 Just so you know, I did swap in the red and black wires on the first one I made. I didn't do it for the second one because I didn't want to the complicate the HOWTO. These things are really easy to make. It takes me about two hours now I know how to do it.
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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 |
#20
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Further options for those who don't want to build their own circuit:
http://www.active-robots.com/product.../act-sib.shtml Look at the second and third items on the page. I'm not sure about the USB device. The PC will see it as a serial port, but it's not a standard 16550A. You might have to modify the software to set the baud rate 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 Last edited by b3lha; 04-29-2007 at 03:02 AM. |
#21
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Strait.
Now this is a good thread!
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"They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." Benjamin Franklin blk 92' LSL w/ average mods pics here http://s306.photobucket.com/albums/nn277/yourconfused/ Cash68: "Hmm, I wouldn't brag about beating Escorts. That's like saying you tricked a retarded person." |
#22
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David C. 1996 Laguna Blue Pearl SVX L AWD See my home page for SVX radio install/removal instructions and wiring harnesses |
#23
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Great write up. Just wondering what program you use to run the linux version software?
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IT'S 5:00 SOMEWHERE!!! 92 Liquid Silver SVX LS-L |
#24
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ssm.c contains functions to access the ecu. It compiles to ssm.o ecudump.c compiles to an executable called ecudump. When you run ecudump, it calls the functions in ssm.o to extract data from the ECU and write it to a file. If/when I've worked out enough of the memory locations in the ECU I'll write something to display them graphically in real time. If you know how to program, then you can write your own software to call the ssm functions and display the data however you want it.
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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; 04-29-2007 at 10:01 AM. |
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I got some emails that people have been trying to PM me but my mailbox was full. I've cleared some space now. You can also email me at b3lha alcyoneorguk.
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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 |
#26
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bump
just want to keep track of this posting as I understand assembly so this might be something I can play with later.
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Marisa '93 LSL Anniversary Edition - 02/93 - 150,998 Daily Driver - Forged EG33 (long block), 6MT swap, and re-upholstered interior '92 Pearl - 100k Side restoration project Locker | Old Locker | Shutterfly | ReadingIX | Facebook | Instagram |
#27
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So far I've had good results doing this on my 94 SVX Version S40ii and my 96 Legacy. I've just discovered that it doesn't work on my 91 SVX Version L.
It connects OK and the ECU does respond to the commands I send. But the data it sends back does not conform to the protocol. The response is different every time I run the command . It looks random. I thought maybe my ECU had a faulty transmitter, so I tried it on another 91 Version L - and that one does exactly the same thing! Maybe the early cars use a different protocol. Maybe it's just the 4WS cars. Maybe they are actually both faulty in the same way. Could be a bug in the early CPUs. At some point I'll investigate further. For now I'm going to concentrate on figuring out the assembly code. I've already found a few interesting routines, but it's slow and time-consuming work. I'll post some updates on my website when I have enough information to make it worthwhile. Phil.
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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 |
#28
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I had a bit of a breakthough with the parameter locations. I found that one of the parameter sets supplied with the software was a partial match for my Legacy. So I disassembled the Legacy firmware, looked at the code that accessed those locations, and then looked for similar code in the SVX firmware. Further information on my website http://www.alcyone.org.uk/ssm
I took a couple of screenshots of the software running on my 94 SVX. Could one of the engine gurus please comment on whether the data looks correct? Phil.
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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; 05-13-2007 at 04:36 PM. |
#29
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Great progress!
Any chance we could get some pictures large enough to read? Thanks for your efforts. |
#30
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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 |
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