only thing i am puzzled by is - why copying the flash helps, but re-soldering the chip from one board t another - does not (and this is my extent of knowledge, maybe it is just fundamentals). If this is so easily done (apart from some caveats that they lose the configs, knock on wood), I would like to find out how I can do it myself. Apparently the intel 28F400 chip is the one of importance and it has been mentioned in a multitude of posts in the russian speaking part of the internet. I have read on forums that people have copied the config from the flash numerous times and that should be enough.
01 S80 ECM TOOLS HOW TO
Now, my question is, how to transfer the data from one to another, or rather, whether I should bother with a JTAG with copying the processor config data and copying the flash, or just copying the flash alone will suffice. There is even a service of copying the data over to a refurbished device. I have done a fair bit of reading in multiple languages on this, and apparently the water damage, as well as over-heating of the MCU is a very common problem.
Some extent of the damage can be seen on the pictures in the bottom gallery - more the connectors then the board itself, but, ahh, well. Thanks for your reply, McBryce, but it seems to me that repairing the device itself is too costly compared to the fact that they are easily copy-able, even though bound to the car. Please see a gallery of the water damage to my module below: I would really appreciate any input in this as going down the expensive route is not really something I want. why does the author say, that he has tried swapping the flash chips around and it did not work? due to different hardware layouts maybe? As well, I assume that the replacement/donor module, that I have acquired, has to be 1:1 to be compatible with the car itself (i do not expect an answer to this). This leaves me with the option, that is being stipulated in the blog above: " read flash from dead CEM re-program new replacement CEM, done." in your, experienced opinion - is this a feasible option? would it be possible with simple tools to pull the the data from the flash (I assume this is what stores the ID and other config data that is being transmitted to the ECU so that it gets recognized/becomes compatible) or is there a caveat that neither the author of the idea, nor me do not see? (something along the lines of the fake FTDI chips and them being broken if you use official software?). A picture of the old and new devices from the blog for those who do not surf links: Due to the fact that my CEM module is badly damaged, I do not think that a lot of the components will be usable as the water has corroded a lot of pins which have come out, as well as surely corroded much more. The more interesting and detailed explanation can be found here: A Lithuanian guy (I am Latvian) has replaced the MCU from a donor device in to his old device and it has worked. I have a donor device, but I am not sure of the internals as I haven't had the time to pry it open and see if they are similar internally.
INTRO end This leads me to believe, that I can attempt a DIY fix for it. As well as there are services that specialize in the repair of these devices. I have googled quite a lot and it seems that these modules are easily repairable, and a few people have completed it, but with different main causes. 200 EUR for adding it to the car as they apparently have unique identifiers and the ECU will not recognize it, thus it will not work (there is some blabber about downloads from Volvo servers within the VADIS (volvo's own diagnostic software) package which you need to have a subscription etc.) All of that being done to prevent these modules from being stolen and sold left and right.
01 S80 ECM TOOLS PLUS
The repair at the dealer costs too much for me to consider this option - 1000 EUR for the module plus another approx. And after taking out the module itself, you can see the substantial damage caused to it. If anybody is interested in more details, please ask, but I arrived to this conclusion after a few basic fixes of the failed window washer pump did not work. INTRO start skip this if you are not interested in the explanations I own a volvo s80 (2003) that has stood on the outside for some time and it has turned out, that it has the infamous sunroof drain problem which in turn has caused water damage to the Central Electronic Module of the car. I have an automotive repair dilemma here which ultimately boils down to electronic fundamentals in repairing a water damaged device that processes CAN signals. I am warning you in advance, that I am a newbie who knows the basic theory and enjoys watching a lot of youtube videos of Mike, Dave, AvE, Jerri Elsworth, Applied science and so on, however, I am not by far an electronics engineer.
Hello all! Long time watcher, first time poster who finally needs to ask for your help/advice.