Data Sheet For ECU
07-05-2002 | 07:39 PM
#3
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Posts: 1,431
Somehow I doubt Nissan released a whitepaper or EE style datasheet for our ECU's. If there is one out there, I would love to see it! If you are really interested, you could always look at it and make some reverse engineering notes yourself (if you are an engineer that is 
)
)
07-05-2002 | 08:15 PM
#4
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Posts: 372
Originally posted by hakk97se
Somehow I doubt Nissan released a whitepaper or EE style datasheet for our ECU's. If there is one out there, I would love to see it! If you are really interested, you could always look at it and make some reverse engineering notes yourself (if you are an engineer that is )
Somehow I doubt Nissan released a whitepaper or EE style datasheet for our ECU's. If there is one out there, I would love to see it! If you are really interested, you could always look at it and make some reverse engineering notes yourself (if you are an engineer that is
)
yeah, I wanted to mess around with my ECU and see what I could do. Too bad theres no data sheet..it is hard to reverse engineer such things because u have to basically log the traffic and see what kind of signals we have.. I ask because I am a Comp Engr student and wanted to make a generic/programmabele ECU + Data logger as my final project... So if anyone could point me in the right direction where I could learn more about our ECU...it would be a great help. thanks.
07-05-2002 | 09:15 PM
#6
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I am in my last year of Comp Eng also. I would be interested in working on such a project.. so let me know if you are interested in a hand.. I was thinking about doing something similar using a MC68HC11 or derivatve, or something more complex like a Rabbit board. I am interested in telematics and am going to look into doing something like that professionally after I graduate 
07-06-2002 | 03:30 AM
#9
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Posts: 1,431
Well, I just searched around and here's what I found out. Some of it I knew already, but I share anyway. Basically most of the books out there regarding Vehicle Control Systems (ie ECU's, PCM's , navagation units, etc) are aimed at automotive repair people trying to get ASE certified. Few seem the be written from the point of view of an actual engineer like you and I. However, the Society of Automotive Engineers (SAE) does publish some books that appear to be on our level. Most of them come from the same author/editor, Ronald K. Jurgan. I gather that these books are mostly collections of papers published on the subject by the SAE. Anyway, here's what I found on Amazon that looked interesting:
This one seems directly on point:
http://www.amazon.com/exec/obidos/AS...roduct-details
This one seems like it may be lacking something. It is apparently aimed at american cars.
http://www.amazon.com/exec/obidos/AS...580050-5912711
This one looks half decent and you can't beat $20. I might order this, simply cause it's cheap.
http://www.amazon.com/exec/obidos/AS...580050-5912711
Everything else I found that was interesting were expensive PDF documents available for download, not worth it. Also, reading up on the OBD-II spec (on-board diagnostics, second gen) might be useful as well since apparently all cars in the U.S. must conform to this diagnostic interface. I am also an IEEE member, so I will dig around for transactions papers and other such goodies.
Regards,
Jon
This one seems directly on point:
http://www.amazon.com/exec/obidos/AS...roduct-details
This one seems like it may be lacking something. It is apparently aimed at american cars.
http://www.amazon.com/exec/obidos/AS...580050-5912711
This one looks half decent and you can't beat $20. I might order this, simply cause it's cheap.
http://www.amazon.com/exec/obidos/AS...580050-5912711
Everything else I found that was interesting were expensive PDF documents available for download, not worth it. Also, reading up on the OBD-II spec (on-board diagnostics, second gen) might be useful as well since apparently all cars in the U.S. must conform to this diagnostic interface. I am also an IEEE member, so I will dig around for transactions papers and other such goodies.
Regards,
Jon
07-06-2002 | 01:55 PM
#10
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Senior Member
Joined: Jun 2002
Posts: 372
great work. I hadnt thought about searching amazon. :-/ And yes, IEEE archives should definatly have something. Let me get to work on this and try n find some docs.
What I picture is a generic open architecture for the ECU itself which should be fully programmable and should be able to control any given engine. The software should be customizable on a per car bases and should also support real-time data analyses. GPL the whole shabbang.
Which university do you attend hakk97se? I am at SJSU.
What I picture is a generic open architecture for the ECU itself which should be fully programmable and should be able to control any given engine. The software should be customizable on a per car bases and should also support real-time data analyses. GPL the whole shabbang.
Which university do you attend hakk97se? I am at SJSU.
07-06-2002 | 02:06 PM
#11
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Joined: Oct 2001
Posts: 1,431
Originally posted by 98fiveSpeed
great work. I hadnt thought about searching amazon. :-/ And yes, IEEE archives should definatly have something. Let me get to work on this and try n find some docs.
What I picture is a generic open architecture for the ECU itself which should be fully programmable and should be able to control any given engine. The software should be customizable on a per car bases and should also support real-time data analyses. GPL the whole shabbang.
Which university do you attend hakk97se? I am at SJSU.
great work. I hadnt thought about searching amazon. :-/ And yes, IEEE archives should definatly have something. Let me get to work on this and try n find some docs.
What I picture is a generic open architecture for the ECU itself which should be fully programmable and should be able to control any given engine. The software should be customizable on a per car bases and should also support real-time data analyses. GPL the whole shabbang.
Which university do you attend hakk97se? I am at SJSU.
How about that for coincindences!
07-06-2002 | 08:54 PM
#14
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i doubt that we will get the schematics for our ECUs.. if the schematics were published then Im sure Nissan published additional data with it.. but I might be wrong. So yes, schematics would help. Data sheet would be better. Who manufactured Nissans ECUs?? Maybe we can inquire with the manufacturer for additional info.
What a coinkidink! UCSC has Comp Engr? Sweeet.
What a coinkidink! UCSC has Comp Engr? Sweeet.
07-06-2002 | 08:55 PM
#15
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Joined: Aug 2000
Posts: 2,807
This guy hacked his Z32 ECU and could probably give you some pointers. Check this link out http://ashleypowers.com/Data%20Acquisition/daq.htm
07-06-2002 | 11:54 PM
#16
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Joined: Oct 2001
Posts: 1,431
Originally posted by 98fiveSpeed
i doubt that we will get the schematics for our ECUs.. if the schematics were published then Im sure Nissan published additional data with it.. but I might be wrong. So yes, schematics would help. Data sheet would be better. Who manufactured Nissans ECUs?? Maybe we can inquire with the manufacturer for additional info.
What a coinkidink! UCSC has Comp Engr? Sweeet.
i doubt that we will get the schematics for our ECUs.. if the schematics were published then Im sure Nissan published additional data with it.. but I might be wrong. So yes, schematics would help. Data sheet would be better. Who manufactured Nissans ECUs?? Maybe we can inquire with the manufacturer for additional info.
What a coinkidink! UCSC has Comp Engr? Sweeet.
07-07-2002 | 03:43 AM
#17
Member
Joined: Dec 2001
Posts: 42
Thanks for asking the question I've wanted to since becoming an org member, but haven't for fear of being flamed. The ability to edit fuel delivery and ignition timing tables would probably allow one to squeeze a few extra HP from the stock engine. For nitrous or forced induction setups, it would open up a whole new world.
I think there are a few shops (like JWT) that produce ECU's with modified code, but they're not likely to give up any good how to info since that's their bread and butter. Most of the other control mods I've seen seem to rely on spoofing a control input (like MAF) or changing and assumed constant (like fuel pressure) or both.
Has anyone here popped the cover off their ECU? A quick look at the processor and related components would tell a lot. I'm thinking about doing it on mine, but a few things are holding me back; It's a daily driver, and I need to get to work tomorrow; it works and I don't want to f*ck it up, and there are probably tamperproof fasteners holding it together. Check this thread tonight. I may just do it (no promises).
Someone mentioned the 68HC11, ugh what a piece of dogsh!t. 1/2 usec timing resolution, 8 bit A/D inputs, and a plug in EPROM. In the past seven years I've written a lot of code for the HC11 for turbo Diesel fuel system development, trust me I know the HC11's limitations. Atleast the HS12 has flash RAM, 10 or 12 bit A/D inputs, and a faster clock (I think). Motorla also has a 55X line of 32 bit processors, but there's a lot of work climbing that learning curve.
Ooops, that's it for now, baby's crying, gotta go. I'll check back later.
I think there are a few shops (like JWT) that produce ECU's with modified code, but they're not likely to give up any good how to info since that's their bread and butter. Most of the other control mods I've seen seem to rely on spoofing a control input (like MAF) or changing and assumed constant (like fuel pressure) or both.
Has anyone here popped the cover off their ECU? A quick look at the processor and related components would tell a lot. I'm thinking about doing it on mine, but a few things are holding me back; It's a daily driver, and I need to get to work tomorrow; it works and I don't want to f*ck it up, and there are probably tamperproof fasteners holding it together. Check this thread tonight. I may just do it (no promises).
Someone mentioned the 68HC11, ugh what a piece of dogsh!t. 1/2 usec timing resolution, 8 bit A/D inputs, and a plug in EPROM. In the past seven years I've written a lot of code for the HC11 for turbo Diesel fuel system development, trust me I know the HC11's limitations. Atleast the HS12 has flash RAM, 10 or 12 bit A/D inputs, and a faster clock (I think). Motorla also has a 55X line of 32 bit processors, but there's a lot of work climbing that learning curve.
Ooops, that's it for now, baby's crying, gotta go. I'll check back later.
07-08-2002 | 12:52 AM
#18
Supporting Maxima.org Member
Joined: Oct 2001
Posts: 1,431
Originally posted by pblaze
Thanks for asking the question I've wanted to since becoming an org member, but haven't for fear of being flamed. The ability to edit fuel delivery and ignition timing tables would probably allow one to squeeze a few extra HP from the stock engine. For nitrous or forced induction setups, it would open up a whole new world.
I think there are a few shops (like JWT) that produce ECU's with modified code, but they're not likely to give up any good how to info since that's their bread and butter. Most of the other control mods I've seen seem to rely on spoofing a control input (like MAF) or changing and assumed constant (like fuel pressure) or both.
Has anyone here popped the cover off their ECU? A quick look at the processor and related components would tell a lot. I'm thinking about doing it on mine, but a few things are holding me back; It's a daily driver, and I need to get to work tomorrow; it works and I don't want to f*ck it up, and there are probably tamperproof fasteners holding it together. Check this thread tonight. I may just do it (no promises).
Someone mentioned the 68HC11, ugh what a piece of dogsh!t. 1/2 usec timing resolution, 8 bit A/D inputs, and a plug in EPROM. In the past seven years I've written a lot of code for the HC11 for turbo Diesel fuel system development, trust me I know the HC11's limitations. Atleast the HS12 has flash RAM, 10 or 12 bit A/D inputs, and a faster clock (I think). Motorla also has a 55X line of 32 bit processors, but there's a lot of work climbing that learning curve.
Ooops, that's it for now, baby's crying, gotta go. I'll check back later.
Thanks for asking the question I've wanted to since becoming an org member, but haven't for fear of being flamed. The ability to edit fuel delivery and ignition timing tables would probably allow one to squeeze a few extra HP from the stock engine. For nitrous or forced induction setups, it would open up a whole new world.
I think there are a few shops (like JWT) that produce ECU's with modified code, but they're not likely to give up any good how to info since that's their bread and butter. Most of the other control mods I've seen seem to rely on spoofing a control input (like MAF) or changing and assumed constant (like fuel pressure) or both.
Has anyone here popped the cover off their ECU? A quick look at the processor and related components would tell a lot. I'm thinking about doing it on mine, but a few things are holding me back; It's a daily driver, and I need to get to work tomorrow; it works and I don't want to f*ck it up, and there are probably tamperproof fasteners holding it together. Check this thread tonight. I may just do it (no promises).
Someone mentioned the 68HC11, ugh what a piece of dogsh!t. 1/2 usec timing resolution, 8 bit A/D inputs, and a plug in EPROM. In the past seven years I've written a lot of code for the HC11 for turbo Diesel fuel system development, trust me I know the HC11's limitations. Atleast the HS12 has flash RAM, 10 or 12 bit A/D inputs, and a faster clock (I think). Motorla also has a 55X line of 32 bit processors, but there's a lot of work climbing that learning curve.
Ooops, that's it for now, baby's crying, gotta go. I'll check back later.
07-09-2002 | 12:18 AM
#19
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Senior Member
Joined: Jun 2002
Posts: 372
Originally posted by hakk97se
Dude, you gotta show up to the Coyote Point meet on the 28th!
Dude, you gotta show up to the Coyote Point meet on the 28th!
Im planning on taking out my ecu sometime this week, I'll post when I have some additional info. Lets try and do this.
07-09-2002 | 04:54 AM
#20
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Joined: Aug 2001
Posts: 1,503
http://www.obdii.com/
i've been wanting to try and get on a project like this for a while now... just never had time... I was even about to order the tool to plug into the joystick type connector.
heres another link I start on probetalk with some links:
http://www.probetalk.com/forums/show...ighlight=obdii
i've been wanting to try and get on a project like this for a while now... just never had time... I was even about to order the tool to plug into the joystick type connector.
heres another link I start on probetalk with some links:
http://www.probetalk.com/forums/show...ighlight=obdii
07-10-2002 | 02:54 PM
#22
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Senior Member
Joined: Jun 2002
Posts: 372
Ive been calling around and trying to find some literature from nissan on our ECU..but the only publications they claim to exist are the Factory Service Manual and the Owners Manual. Could someone please take a look at the service manual and tell us exactly in how much detail is the ECU covered? A scan of the ECU section would be great..i dont want to spend a 119.00 bucks for something we wont need...id rather spend it on the hardware we are going to need.
07-10-2002 | 09:20 PM
#23
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Posts: 1,503
I have the haynes and chilton manuals... nothing on ECU reading and how to do it...
The only info i was able to find after about a month of searching, was from the above link i had posted
I really wanted and would still like to make my own program that could read information from the ECU. After that, I'd love to display it in a super nice way or something... I just need to know how to read the damn thing...
The only info i was able to find after about a month of searching, was from the above link i had posted
I really wanted and would still like to make my own program that could read information from the ECU. After that, I'd love to display it in a super nice way or something... I just need to know how to read the damn thing...
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