360 instrument cluster OBD2 access?

Hello experts, does anyone know how to access the 360 instrument cluster through OBD2 for reprogramming? Which pin, which protocol, what addresses, which CAN bus messages do what etc.

I've been searching manuals and the Internet far and wide on that topic and found precisely zero information. So if anyone has some pointers that would be greatly appreciated. Apparently factory tools or Leonardo can do that, but I don't have an access to either of them. Thanks!

 

Thanks @EastMemphis, yes, I've been talking with Trev, he is very knowledgeable (actually the most knowledgeable in the world regarding the 360 electronics) and a great guy. I have already been on a SAK beta waiting list for a while.

As soon as Trev releases his software most if not all of our electronics projects will become obsolete, I'm really looking forward to it . But meanwhile I don't need all the features of the Swiss Army Knife. Just a few simple items, in this case :

@Melvin Diagnosi - I need dash reprogramming between F1 and manual. It seems the dash has not made it yet into the DYI hacking domain, so any pointer will help. Thanks

 

@Qavion, yes, I'm aware of the pdf diagrams (I've posted the best one I have on the Technical Chat), but I have not been aware of your instrument diagram - it is just AWESOME, thank you!

If @360trev could chime in with any message formats/protocols that would be fantastic, but meanwhile let's complete the wiring. I see clearly the Instrument Panel K-Line, L-Line and which pins on the OBD2 they go to. I see CAN+/CAN- from the 12 pin connector.

But for the completeness, your Instrument Panel 8 pin connector pins 7&8 (pre-setting for CAN+/CAN-) are not connected - are those not useful or the diagram has not been completed for them yet?

Also, while at it, I've tried to find a complete OBD2 pin out and surprisingly I could not find any :-(

So below is my first attempt. "Empty" means not connected, "Ferrari" means model specific functions.

Do you know where OBD2 pins 6/7 and 14/15 connect to on your diagram (somehow I can't find it)? Also what are and where do the pins 8/11/12 go? Thanks!

 

OBD2 Pins for 2002 360 Modena USA version. Ferrari = Model Specific.


1. Ferrari L-line Pin 7 of Instrument Panel 12 pin connector

2. Empty

3. Ferrari K-line Pin 6 of Instrument Panel K-line, 12 pin connector

4. Chassis ground

5. Signal ground

6. ISO15765-4 CAN-Bus High

7. ISO9141-2 K-line or??? ISO14230-4 KWP2000 F-Line

8. Ferrari ???

9. Empty

10. Empty

11. Ferrari ???

12. Ferrari ???

13. Empty

14. ISO15765-4 CAN-Bus Low

15. ISO9141-2 L-Line or??? ISO14230-4 KWP2000 L-line

16. Constant +12V

 

Super, thank you!

Even though as per the attached Ferrari recall I think Pin 4 should be grounded not Empty. And a purist would say Ferrari should in the recall run a wire to chassis ground for Pin 4 instead of simply connecting it to signal ground on Pin 5 but probably it does not matter in practical terms and I'm guessing Ferrari wanted to make it cheaper and simpler rather than correct.

 

@Qavion @duskybird thank you. Getting some info from that friend with SD2 will be great. Below is a random photo of SD2 (Maserati, Ferrari similar), which shows many other connectors. And a page from the SD3 manual shows a bunch of non OBD2 connector with a comment "for SD2 type diagnostics. Plus there is another comment about the cars before "Quattroporte and 612". So knowing nothing about the SD tools my guess would be that the newer (starting Quattroporte and 612) can fully be programmed through OBD2, but our cars need a few other connectors for a job :-(. At least by the factory design, maybe @360trev or someone else found a direct way through OBD2 only.

For example CAN pins 4&5 from the 12 pin connector don't seem to be present on OBD2. Plus there is pin 12 of the 12 pin connector labeled as "for Digitek" and Digitek is the manufacturer of SD2 for Ferrari. SD2 is probably using that pin.



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@duskybird - has your friend replied regarding SD2 programming? The first question for him would be if it is all done through OBD2 (presumably pins 1&3) or with an additional connector, and if so, where is that connector being plugged in.

From the diagram it would be the 12 pin connector 6E on the back of the instrument cluster - meaning removal of the cluster to access it.

Looking more at the diagrams, CAN pins 4&5 go to ABS/F1/Engine, so likely only to collect the display info, not used to program. So potentially only the Digitek pin 12 would be used for programming if anything except OBD2 is required. Thanks.

 

Looks like SD2 is only using OBD2 for the instrument cluster

 

That is an interesting interpretation . If not clear from the context, here is a more grammatically correct statement:

"Looks like SD2 is using only OBD2 for the instrument cluster."

Regarding what I want to do, as I stated above on Wednesday "I need dash reprogramming between F1 and manual." Thanks!

 

OBD2 has been forced into existence by government regulations to provide a uniform way to do a number of things (primarily emissions related) so any tool (SD2 included) can be used to read/clear data from various modules, and majority of all functions of SD2 are done through OBD2.

Volumes can be written on the definition, evolution and adoption of OBD2 but to summarize it in one paragraph, it has become mandatory in USA (and most of the world) starting with cars model year 1996. Before that, many professional dealer diagnostics tools used proprietary connectors to various modules. From 1996 some of those functions were forced to be made through OBD2, but few were still left with additional proprietary connectors. Over the years those proprietary connectors started to disappear and pretty much all of them are gone now. Please look at several connectors in the SD2 photo I posted above, those are for functions not done through OBD2.

So the cars designed in the 1990s (360 included) are transitional cars - some of them still used proprietary connectors in addition to OBD2, and continued to use them until early 2000s, some gradually moved all the functions to OBD2. Please note that initially K-Line and L-Line were mandatory (pins 7&15), CAN Bus became mandatory (pins 6&14) only in 2008 etc.

As a result, a first step when reprogramming the instrument cluster in 360 from F1 to Manual is to determine how to access it - is it through OBD2 only, or some other older connector, or both. Now we know that the answer is "OBD2 only".

I hope that this (rather lengthy) description clarifies the topic.