Hello,

Do you know any information about the CAN bus wiring/pinouts on 07 plate 1.9JTD/120bhp Doblo?

I gonna be really pleased if you share something useful.
Its now a 7 month question, and Im guess, this sickness coming from since birth of my Doblo

Thank you

sorry no info,

what's the issue?,

has a set-up with MES or examiner been tried..??

Well, the issues started four and half years ago when we bought the car. The first few months I had nearly sixteen!!! times engine failure, DPF cleaning problems, EGR valve, etc… We`re the second owners, the first passed back the car after 3 years to the same Fiat Dealer where we bought from (Rockingham Cars, Corby), good question why.
We bought the car with one year full warranty, sadly with hire-purchase loan, they just patched the things in the first year, after I bought an ELM adapter and Multiecuscan sw, and I fixed nearly everything without problem, for 3 years.

Last year end of august went into limp mode, which is now sorted. Temporary.
My previously post (connection with this): https://www.fiatforum.com/doblo/355...ter-type-223-can-t-connect-engine-module.html

I just realised there was always a CAN bus error, when I cleaned that, it came back instantly.
Always, straight away.
Maybe this caused that, the DPF never was cleaned automatically, I did that with forced regen once - twice a year.

My theory, there is a cable/connection problem between ECU and bodycomp. No proper communication between the moduls, this can cause the issues (if I`m right)

So I started to check physically the connectors/cables from the body comp to the D4A front engine coupling, then to the ECU, I got multimeter, basic electronic knowledge.

And then I surprised and stuck, as the e-learn manual says:

“The control unit M10 is connected via the CAN - pins 6, 7 and 48 - to the Body Computer M01 and the other nodes in the network”

These 6, 7, 48 pins connected from ECU to the D4A coupling`s D, E, C pins then these going to the bodycomp 36, 37, 20 (36, 37 pins CAN, 20 is a K-line).

I started the check from bodycomp where these pins/cables exist, then on the D4A connector, where the fun starting. Because there are two connector as D4A, but you cant mix/swap them as they looks mirrored, but I found my cables on the other connector (not on that one, which the e-manual says), this is the smaller thing. The bigger is, when I seen the CAN (if they are, I`m not sure now) cables in the connector going to nowhere, as there are no pins on the other side of the connector, which should going to ECU. Only the K-line connected, but that is not in the pin 48 on the ECU`s connector.

Well, this is why I need a proper CAN wiring, or if somebody know where they running, so I can check them. Maybe this gonna sort out the things.

Thank you.

Todays update... More questions,

I will start to find the CAN Hi and Low cables from the other (ECU) side, i found few twisted cables, with different colour code, maybe tomorrow I can map them regarding the weather

Googled Russian and few foreign websites about Bosch EDC16C39 CF4 pinout diagrams and CAN wiring, sadly there is no rock solid info, i found more layouts, not concrete colour codes, mostly different

The question is, when I using diag via ODBII (I was able to see the ECU, was communication, but as active Engine node was not appear. ) its talking via K-Line? And the CAN lines are for the nodes to nodes communication only?

If you can provide ECU pinouts and proper can wiring, that gonna be a big help.

ps: The car start and run

Thanks in advance.

...i had few minutes only today for my Doblo.
I found only this twisted pairs from bodycomp, the brown-green, and green/blue-yellow/blue.
Which is should be the CAN by the e-learn (pink/white, pink/black) is not twisted, and its not going through on the connector.

Which one can be the CAN?

Thanks

Nobody had same issues?
Looks like just only me an unlucky bastard with my Doblo :S