Vida CEM swapping

[RickHaleParker]

cem DIAG number.txt

Thanks, that is a pretty extensive list of the Europe CEM Part numbers. In turn, it lead me to another list of what looks like all Europe and Nordic control modules with a some other information, include Diagnostic protocol and protocol version numbers.

Look like I will be updating the CEM parameter list again. This time across the board.

[eltoro]

Hi all!
Such an awesome thread you have here. It took roughly 10 hours to read it, such a thriller. I'll try to use some time to replicate the HW setup. I just got a Teensy 4.0, CAN-transceivers, and ODB connectors. I do have an XC60 that does have CAN bus / CEM issues. I did buy two spare P3 CEM modules + one in the car. One spare that was original CEM has the processor removed now. Another spare one does have the wrong CPU version (or maybe the repair shop could not transfer the SW from one CPU version to another.) The third CEM is now in the car, and it does have the original CEM's SW and data.

Does anyone have some instructions about the P3 bench setup? It would be a great way to start playing with the code and setup?

Has anyone considered opening a Wiki page or something like that? It would hold the learnings, data, and instructions much more accessible way.

Cheers, ElToro

[RickHaleParker]

cem DIAG number.txt

These part numbers are from the file but I cannot identify them. Perhaps somebody in one of the other Volvo markets can identify them.

I need to know what type of CEM they are.
CEM-X40 (Nedcar), CEM-P1, P2 ( CEM-B, CEM-L, CEM-H ), CEM-P3, CEM-SPA/CMA.

CEM-? means no clue.
CEM-X means it is a P2 CEM-L or CEM-H.

If you cannot identify the CEM type for the CEM-?. Year(s) and Model(s) fitment will do.
For CEM-X ,the CEM type, CEM-L or CEM-H is needed.

1010101 CEM-?
1020304 CEM-?
1020305 CEM-?
1234569 CEM-?
8645723 CEM-?
8676390 CEM-?
8688381 CEM-?
9469693 CEM-?
9494825 CEM-?
11111111 CEM-?
12345678 CEM-?
12345679 CEM-?
13245678 CEM-?
20080214 CEM-?
20130122 CEM-?
20130306 CEM-?
20130530 CEM-?
22222222 CEM-?
30682151 CEM-?
30728101 CEM-?
30728270 CEM-?
30765981 CEM-?
30772693 CEM-?
30772722 CEM-?
30786028 CEM-?
30786028 CEM-?
31254681 CEM-?
31270337 CEM-?
31296062 CEM-?
31314660 CEM-?
31314661 CEM-?
31376475 CEM-?
31412132 CEM-?
-------------------------------

30682039 CEM-X
30682825 CEM-X
30728579 CEM-X
30786018 CEM-X
31296075 CEM-X
31327332 CEM-X
31327407 CEM-X
31327408 CEM-X
31394560 CEM-X

[matija0610]

I did not find a connection between Hardware Number and Diagnostic number in the Vida database.
All my queries on database (about vehicles, modules) are related to Diagnostic number.
When I search for blocks and configurations with Hardware Number, I get nothing, as if they don’t exist.
The question is, does one Diagnostic number have more Hardware Number or one Hardware Number have more Diagnostic number !?

XC60 2009.jpg (38.43 KiB) Viewed 1657 times

[RickHaleParker]

The question is, does one Diagnostic number have more Hardware Number or one Hardware Number have more Diagnostic number

//// This analysis is not conclusive \\\\

It looks like the Diagnostic number is tied to one CEM type. Cannot tell what the hardware number is but can ferret out the CEM type by some of the Diagnostic numbers by looking at the Model and Year in attached file.

The pattern I pulled out so far looks like D2 is all early P2. The CEM-B ( P2 1999 -2004 ) and some early CEM-L and/or CEM-H. Makes sense considering the Ford's destination for the Platform 2 is D2.

The rest of the CEM-L and/or CEM-H are GGD.

P1 & P3 are all GGD.

P5 & P6 ( SPA/CMA ) are all VDS.

The X40 ( Nedcar ) stands alone with its own protocol.

[RickHaleParker]

Does anyone have some instructions about the P3 bench setup? It would be a great way to start playing with the code and setup?

P3 on the bench .. Follow this link and get a EWD ( Electrical Wiring Diagram ). See if you can figure it out.

[vtl]

Does anyone have some instructions about the P3 bench setup? It would be a great way to start playing with the code and setup?

P3 on the bench .. Follow this link and get a EWD ( Electrical Wiring Diagram ). See if you can figure it out.

It's in VIDA, in information section, under cables and fuses.

[RickHaleParker]

It's in VIDA, in information section, under cables and fuses.

This is so much easier then decoding a EWD.

[RickHaleParker]

This is what I came up with for P3 Bench setup.

Teensy loaded with VTL's P3 branch. Do not use the Main branch.

Connector C5 (Black connector next to the Blue connector )

• PIN : Function , ( Comment )
  C5:1 : Battery Power (+) , ( 12V which is marked 30+ on a EWD )
  C5:2 : Battery Power (+) , ( 12V which is marked 30+ on a EWD )

Connector C1 ( Green Connector )

• PIN : Function , ( Comment )
  C1:30 : MS-CAN (+) , LS-CAN H ( White wire )
  C1:31 : MS-CAN (-) , LS-CAN L ( Green wire )
  C1:54 : Battery Power Ground (-) , ( VTL is grounding some place on C3 but C1:54 is the official power ground. )
  C1:63 :15+ , ( Key on. VTL is not using this but Vdash requires the key to be on. Apply +12V for Key on conditions. )

Connector C3 ( Blue Connector )

• PIN : Function , ( Comment )
  C3:6 HS-CAN (+) , HS-CAN H ( White wire )
  C3:7 HS-CAN (-) , HS-CAN L ( Green wire )

[RickHaleParker]

P1 Shuffles have been Merged into VTL:Master. P1 owners download the update from VTL's fork. Collectively, P1s should have a higher success rate but I do not claim all the shuffles are correct. Shuffles for some of the P1 CEM part numbers are unconfirmed.

Report successes and failures.