ECU Simulation: Software & Tools

Hello,

Unfortunately, I can't use the ABS control unit from the donor car during the conversion of my vehicle.

Is there a way to simulate the control unit and also convert a speedometer signal so that it is transmitted via CAN bus?

Sure, no problem. Here's the translation:

"Thank you in advance for your help."

Best regards, Eric.

Quote:

Hello, Unfortunately, I can't use the ABS control unit from the donor car during the conversion of my vehicle. Is there a way to simulate the control unit and also convert a speedometer signal so that it is transmitted via CAN bus?

Of course, that is possible.

If you were perhaps wondering how this is done, and whether anyone has ever done it before, it would be extremely helpful if you could tell us the make and model of the vehicles involved.


Best regards,
Ingo

Hi.

My vehicle is a Citroen Xantia into which I have installed the technology from a Citroen C5 (2.2 HDI).

Best regards, Eric.

Hello,

I found something at the company Peak, specifically a product called "micromod."

Can I program something like that to help me with my problem?

Best regards, Eric.

Quote:

My vehicle is a Citroen Xantia in which I have installed the technology from a Citroen C5 (2.2 HDI)

.

That's quite exotic, isn't it?
I might have been able to help you with that if you had contacted VAG...

Without documentation regarding the CAN messages, I think this will be extremely difficult.

BTW: Where are people even allowed to drive vehicles with modifications like that? I'm assuming no one is going to register those under EU4 regulations.


Best regards,
Ingo

Hi.

I never had a Euro 4, only a Euro 3 .

and I had already clarified that with the TÜV beforehand.

I've already been in contact with Peak Systems, and I think I'm going to buy it from them.

It's not going to be a "quick and easy" action, but well .

Best regards, Eric.

Quote:

Hi I never had a Euro 4, only a Euro 3.

Well, if you're going to bother with a vehicle that meets the Euro 3 emissions standard – I mean, all that effort, and then still not being allowed into many cities...
That's also the main reason why I chose a gasoline engine for my conversion project.

Quote:

and I clarified that with the TÜV beforehand

.

I find that amazing. In my case, I have a Euro 4 gasoline engine in a car originally designed for Euro 1 standards, and the TÜV inspector told me he could only register it as Euro 2 because the fuel tank doesn't come from a Euro 4 vehicle.

Quote:

I have already been in contact with Peak Systems, and I think I will buy it from them. It's not going to be a "quick and easy" action, but well

.

As I said, without proper documentation, you'll inevitably encounter a number of inconsistencies and logical flaws.
At VAG, for example, some of the ABS/ESP messages have checksums, and if those don't match, the engine control unit immediately turns on the warning light.


Best regards,
Ingo

Hi.

He has a particulate filter that meets Euro 3 standards with PM5 specifications (I will be installing the additive tank and everything else).

Interestingly, I'm not seeing any communication errors with the ABS in the engine control unit; it doesn't seem to be reporting anything.

Okay, I've also programmed the ESP chip.

Well, I hope you can still help me with some basic things.

Best regards, Eric.

Hello,

My CAN interface from PEAK arrived today.

I have already been able to locate the speed signal.
It is transmitted in a somewhat unusual way, using 1 byte for the speed. The first digit represents the tens place, and the second digit represents the ones place.

When I simulate the signal, the needle moves correctly, but the odometer doesn't increment. There seems to be a separate signal for that, also consisting of 2 bytes. This signal increments by 1 with each pulse from the ABS sensor. When these 2 bytes reach FF FF, they reset to zero and start counting again.

Okay, so tomorrow we continue with the research.

Best regards, Eric.

hello,

Here's a small update: I discovered in a wiring diagram that my EDC15 has a speed sensor input.

"When I send a signal there, a signal appears on CAN ID 388."
The problem is that my car is expecting a signal on ID 38D.
The signal is the same one I need; I could convert it to the 38D format.
However, once the signal appears on pin 38D, the engine control unit (ECU) will no longer transmit data on pin 388.

Best regards, Eric.

hello,

Currently, the Xantia is registered as a diesel vehicle, and everything is in order .

I have a question: What happens to the EDC 15 if the CAN signal for the ASR (Anti-Slip Regulation) intervention is missing? Does it run with reduced power, or does it operate normally?

Best regards and thank you,
Eric.

Normally, the engine control unit will store a fault code (missing speed signal). Unfortunately, I can't say exactly how the control unit will behave in that situation, but typically, the "TNA" signal, which corresponds to the speed signal, is present on the OBD connector.

Hi.

I had to generate the speed signal using my micromod. There was an unknown signal on the identifier that changed during acceleration and repeatedly returned to its origin when traveling at a constant speed.

Best regards, Eric.