Hi, Im trying to experiment with the OBD plug of my LGN 1.5dCi It seems OK with KWP2000, but nothing with can bus. Do you know how does this can-bus work on this car.

AAAAAAAAgh
The things that you guys get up to !!
Why do you want to play with your cars
Fill them up with petrol or diesel make sure you have oil and water in it
Drive it carfully and you will get 350000kms
Play around with the OBC you are asking for trouble .and you can wave BYE BYE to any garantie
Stuart

Wy ? Because I'm a guy who want to chat with its ECU
My LOGAN is not just for driving but for technical experiments too.

I do not worry about waranty, because it's a robust car, isn't it ?
So welcome to any informations about LOGAN can-bus

This post has been edited by TAM: 26 Jun 2006, 19:15

AFAIK Logan does not use a CAN bus.

HIS DOES
STU

"low cost design" isn't it ?
So why CAN bus is wired in OBD plug if not used

@TAM, Logan is OBDII compliant (KWP2000).
@Martin, as always you are very funny.

Like Illusion said, Logan doesn't use the CAN bus for EOBD.
It is used for specific Renault commands.

EOBD is wired on KWP.

Exactly !
It doesn't answer to 7DFh or 18DB33F1h ident. calls

I try to keep a bit of Humour on the site .
STUART (thats Martins first name)

What's a OBD Can Bus?

This post has been edited by Inkel: 27 Jun 2006, 18:56

ORANGE DOUBLEDECKER BUS

This is what you will need to travel in once you have fucked up the OBC in your Dacia
Beware readers of messing with your car
Drive it and enjoy it as it is
Stu


Attached thumbnail(s)
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I've read somewhere that Siemens Sirius "computer system" (used in Logan, at least 1.4mpi one) supports CAN (controller area network) for communication between different "computers" in the system. KWP2000 is not the same thing as CAN?

I have also heard that Diesel fits into a Petrol tank !!!!

Say no more eh
Stu
Ps
My Logan is running great
I am 54 yrs old and have had a lot of cars in my time check out my attatchment it is virus free .So enjoy it
and enjoy the Dacia its a great car
Stu

This post has been edited by martin245: 27 Jun 2006, 22:10

Attached File(s)
 Cars_that_I_have_had_during_my_stay.zip ( 1.33mb ) Number of downloads: 300

@martin245: you had quite a lot of cars! But you forgot to mention the Dacia Logan

well..it's called "Cars that i have had during my stay" not "cars that i have had and that i still have during my stay"

Look again: he wrote that he still has the twingo

KWP is a comm protocol build up on various transports, as it is on CAN.
CAN is mostly used in automotive - kind of a standard from BOSCH.

LE. In one of my previous post I said that EOBD is build up on KWP, which is true, but incomplete. The KWP is a diagnostic protocol. On Logan KWP is wired on KLine, a serial protocol. KWP is specified to be build on KLine or CAN.

At the moment few cars have EOBD or JOBD on CAN. Most of them are build on KLine - much more cheper.

If you interogate the CAN line, you might end up communication on the Renault specific protocol - not quite recommened.

This post has been edited by Smeagol: 28 Jun 2006, 11:06

Thank you very much for this clarification!

Do you maybe have some link (URL) where I could find some more info about it (OBDII build up on KWP wired on KLine - as, I understood, is the case in Logan).

KLine is, again, as I understood, some kind of "bus" specification?
and KWP is diagnostic protocol, a "language" used between car computer and diagnostic equipment?

Or maybe I got it all wrong?

KLine and CAN are bus specifications, concrete wirings and so on. Meaning that they came with wires also. They have a logical protocal shape also, better to put it in the Transport Protocol category.

KWP is a diagnostig protocol. Search for ISO 14230.
OBD is equivalent to ISO 15031-5. If you search for this info, you might end up at ASAM or another organization which publish those standards.

There is a site with light informations on the topic: www.obdii.com. At www.iso.org you can buy a copy of the standard.

Hey you are right I must update my PPS anmd put in one of the nicest cars I have had
And I can tell you this out of all of those cars the BMW was the worst .......
The Rover 825 was super and the American car that I had while in Canada is every mans (or womans) dream It was just PURE CAR
Stu

C'mon, Stuart, how can you say that the BMW was the worst car? But you're right about the American car.

iTS THE TRUTH !!! IT WAS SECOND HAND AND JUST ABOUT EVERYTHING HAD OR DEVELOPED A FAULT
STU

Well, buying 2nd hand's like playing the lottery.

THATS TRUE WITH BMW PLAYING LOTTERY AND FORGETTING TO GIVE YOUR TICKET IN

If you look at the warning level under my name you will see that I have recieved a warning from Klaus!....... it is for using capital letters ......
That is a bit silly in my eyes as now i will only write in small letters unless he wants to edit my grammer
the warned one
stu

This post has been edited by martin245: 29 Jun 2006, 17:58

offtopic:

Martin don't be so critical with Klaus, he just applied the forum regulation where is written that writing with capital letters is not allowed and a lot of your posts are with capital letters. This is (capital letters) also not nice for us the other members of forum because 1st this meas that you shout at us and 2nd is very hard to read big letters for long time.

This is my explanation for you, because Klaus can stand up for himself , OK? ( in this case not necessary anyway )

ontopic:

In case is not clear by now ODB and variations are for diagnostic and eventually for erasing "events" from ECU's memory and cannot be used for modifications on software.

If you want modifications you need proprietary software protocol from Renault or hardware changes in order to make tunning or consumption adjustments.

Look at my engine
http://img156.imageshack.us/img156/6308/sn...tester132mb.jpg
http://img477.imageshack.us/img477/7007/130kph2qa.jpg
http://img473.imageshack.us/img473/502/logan39if.jpg

This post has been edited by TAM: 6 Jul 2006, 17:24

@TAM, You are using standard KWP2000 protocol or Renault protocol implemented over KWP2000?

Just standard KWP2000, nothing else