GRA-high became possible with any ECU on MFA+ PQ25

[firegrafik]

Hello to everyone from Russia!
Many MFA+ cluster owners using cruise control would like to see the cruse control icon on the display with stored speed. As i know every mfa+ cluster support gra high. The main issue is the data concerning gra high generates on CAN bus by the engine ECU, and it is the firmware feature, so could not be activated by long coding or eeprom modification. It is a very hard way.

But it is also another way.
Gra-high will work by external unit - the CAN emulator. That CAN emulator genarates data for gra high into the instrument cluster's CAN bus. In this case the hardest work to write the right code for emulator for correct gra high indicating of all cruise control modes: ccs on, ccs off, ccs on&active&stored_speed, ccs on&inactive&stored_speed)

In my case I used CAN filter. I bought it in Russian Internet shop ecutools.ru.

My friend provided tremendous work in developing the code for can filter, and it now works.
That is mine video.
Polo sedan 1,6MPI engine CFNA 2014 MY


For now it surely works with max BCM (7E0 937 090_) what about lower units it needs to check and investigate.
Friend has some thoughts to sell the codes for can filter maybe together with can filter, but it needs some time to release.

[benzinkopf]

Congratulations!!! I like this type of solution. An emulator! I might need your help later, but is there anything like LIN filter? [emoji23]


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[firegrafik]

The device is CAN filter, but in that case it works in emulation mode

[firegrafik]

The CAN filter has an microUSB socket for loading the logic by the PC. After connecting to the cluster CAN wires and power wires (15 terminal and ground) it looked like on the photo. USB wire used often while testings.

[benzinkopf]

great info! thanks firegrafik


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[ciclo]

Hahaha...
Super congratulations firegrafik!
I'm glad a lot, I know you fought hard with your ECU software (CFNA) without results.

Thank you very much for the information!!!

Best regards emulated.

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Cloning is a lesser evil compared to emulation ... emulation implies knowledge.

[firegrafik]

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Cloning is a lesser evil compared to emulation ... emulation implies knowledge.

You are totaly right my friend!

[ciclo]

By the way, as I see that your MFSW is with the cruise control buttons I suppose you already know the information of the following link for the ECUs CWVA, CWVB, CZCA.

https://www.drive2.ru/l/535610322992497322/


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By the way 2, 7MJ





My ECU




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By the way 3, a reminder.

viewtopic.php?t=58703&start=2475#p512906 (Aug 25, 2016)

viewtopic.php?t=58703&start=2475#p512908

viewtopic.php?f=56&t=58703&start=2805#p515929

viewtopic.php?f=56&t=58703&start=3495#p523394

viewtopic.php?t=70203#p523406

I never tested on my 6R CBZC if the MFSW with CC buttons would work with the 5466 software, just did it with the 2686 SW.


Anyway I suppose you already know that this will also be a problem solved.

[firegrafik]

Yes, I know, some Polo sedan owners with CWVA engine, already use this good feature. Unfortunately, mine old CFNA ECU still doesn't allow this. So the only way is waiting with hope if someone will make the external control unit which reads the CCS buttons on MFSW and emulates the stalk's CCS.

[ciclo]

I think it is in the final tests. Debugging.

[n3o]

@firegrafik did you manage to finish this project? can you share CAN messages which are required to show GRA details on instrument cluster?