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CAN bus to OBDII

 
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lemmy01
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Post29-11-2011, 12:20    Subject: CAN bus to OBDII Quote

Hello, I have a question. icon_biggrin.gif
I'm currently in the process of installing a new engine in my 1998 Mr2 (2008).
Unfortunately, I cannot use the original Toyota ECU for this engine.
That's why I ordered an aftermarket ECU with CAN bus support.
VIPEC-V88

Now I have the problem that I cannot get the Euro 3 or 4 approval without an OBDII diagnostic interface.
Therefore, my question is: 'Is there any way to retrofit an OBDII connector?'
According to my admittedly naive assessment, the data should simply be converted from one protocol to another.

I hope this doesn't stray too far from the topic.

Regards,
Ralfhttp://www.vi-pec.com/page_files/V88.html{MARKER}
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Dieselfahrer
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Post29-11-2011, 23:19    Subject: Re: CAN bus to ODBII Quote

lemmy01 wrote:
Hello, I have a question. icon_biggrin.gif
I'm currently in the process of installing a new engine in my 1998 Mr2 (2008).
Unfortunately, I cannot use the original Toyota ECU for this engine.


Why?

Quote:
That's why I ordered an aftermarket ECU with CANBus.
VIPEC-V88
[/url][url]
Now, I have the problem that I won't get a Euro 3 or 4 approval without an OBDII diagnostic interface.


That's clear. Why would you get a registration approval with OBD2?
This is a programmable engine control unit (ECU) - do you want to have it sealed and then have an emissions test performed on a dynamometer (costing several thousand euros)?
Just as an example - I have a 2006 VW engine in my 1991 VW (of course, with OBD - Euro 4, like in a Golf V). However, whether I will be able to get it registered as Euro 4 without an emissions test report is not certain - it's not a Golf V after all. According to the KBA (German Vehicle Registration Agency), the inspector could, "simply put," register it as a lower class (i.e., Euro 3). To register it as Euro 4, he would have to write a report explaining why he believes that the engine in my car does not produce worse emissions values.
I'm not sure if he will do that. If he doesn't, I could find another examiner, but that won't be cheap in the long run.

Quote:
Therefore, my question is: "Is there any way to retrofit an OBDII connector?"
According to my, perhaps naive, assessment, the data should "only" need to be converted from one protocol to another.


That somehow misses the point of your problem.
You need a control unit that is OBD2 compatible. If the programmable unit you are using is OBD2 compatible, it likely also has an interface that would be suitable for the emissions test, regardless of whether the OBD2 communication is via CAN, K-Line, or some other PWM method.http://www.vi-pec.com/page_files/V88.html{MARKER}
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lemmy01
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Post29-11-2011, 23:55    Subject: CAN bus to OBDII Quote

The original engine control unit (ECU) comes from a Camry or Rav, both relatively new models with a lot of extra features that my car doesn't have (automatic transmission, immobilizer, fuel system without a return line with a PWM-controlled pump, etc.). I would have to simulate all of those things so that the ECU doesn't have any errors in its memory or go into limp-home mode.
The new generation Toyota ECUs cannot be tampered with, as the CPU and memory are integrated into a single chip.
Therefore, standalone.

If there had been a standalone device with ODBII support, I would have bought it.
'However, the engine has 4 continuously adjustable camshafts, and since it uses a DBW (drive-by-wire) throttle, only 3 manufacturers offered solutions for that. These were Motec M600, Buhl Racing OBR euro6, and Vipec. None of them support ODB (On-Board Diagnostics), and Vipec was the most affordable option.' If one can consider 2000€ to be a reasonable price.

I checked about the TÜV (German technical inspection) beforehand: If the car meets the Euro4 emission standards and has an ODBII connector, it will be classified as Euro3 (possibly Euro4). Without the ODBII connector, it might be classified higher, but not as Euro3/4. The emission test report is not mandatory; it's at the discretion of the inspector. The standalone ECU is a different matter. It just shouldn't be too noticeable icon_smile.gif.

'What I need is a simulator that can read various live values, such as oxygen levels and RPM, via the CAN bus.' 'It allows you to enter information like the VIN (Vehicle Identification Number) using software.'
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