V70 2.4T 2002 replace or reprogram ECU?

Jonboy74 · Post by **Jonboy74** » 05 Oct 2011, 15:20

Hi all,

My ECU is a Bosch 0261207392 HS.2. I have a code that is listed as an internal ECU Fault (I don't have the Volvo code handy, but the generic is a P0607).

I've been told by the dealer that my ECU needs to be replaced and reprogrammed for a grand total of just under $1,500. In my opinion, that is simply highway robbery.

I've got a background in computers and electronics. I understand EPROM/EEPROM technology, and someone has to have run into this/done this before.

I've found conflicting information online, and what I want to know is, is it possible for this year model to simply get another ECU (they are on ebay for under $100) and download whatever information is on my ECU and then upload it to the used one, via the OBDII connector? I know that SAE J2534-1 applies to 2004 and newer vehicles....surely there is a similar standard for older vehicles?

Ideally, I'd like to download the programming from the existing computer to my laptop via OBDII connector, and then upload that programming to another ECU via the same process.

Any ideas?

Thanks,

Jonathan

Tags: ECM, ECU, Program, Reprogram, Programming, Reprogramming, OBDII, USB, Serial

slc10844 · Post by **slc10844** » 06 Oct 2011, 06:00

You would probably be better off replacing the ECM and having it reprogramed. Doesn't always have to be a dealer. There may be an independent repair facility in your area that specializes in Volvos and has the ability to download factory software.

draser · Post by **draser** » 06 Oct 2011, 11:32

I've found conflicting information online, and what I want to know is, is it possible for this year model to simply get another ECU (they are on ebay for under $100) and download whatever information is on my ECU and then upload it to the used one, via the OBDII connector?

That would be the way to go, if you'd have the software to access the ECU. I did ask myself the same question, in reference to the Vida Dice software - weather it was capable to move the existing CEM info onto laptop, then transfer onto new CEM. In the ECU case, not sure what other info is stored on it, other than ignition timing and fuel maps - just like any ECU. If it's just the ignition and fuel, theoretically you should be able to do a direct swap between similar MY cars. But in this case lack of info prevents you to do that.
The other idea was, based on what I read on forums about this guy restoring the DIM module - loose connections at microprocessor and on the PCB in general - and given your background, you may want to take appart and take a closer look at the PCB. Good luck!