Volvo EDC16C31 ECU bricked? After purchasing a file.

**sniegavirs** · 24th November, 2020, 11:06 AM

You opened VOLVO EDC16C31 ecu to do BDM or did some cutting through ECU case to get to the BDM port??

**Sefior** · 24th November, 2020, 01:00 PM

I opened it very carefully and made sure to not break or damage anything.

**peechie** · 24th November, 2020, 04:00 PM

Replacement ECU has SAME numbers on the case?

With new ECU does your diagnostics tool connect and read fault codes etc?

**Sefior** · 24th November, 2020, 04:05 PM

Originally Posted by peechie

Replacement ECU has SAME numbers on the case?

With new ECU does your diagnostics tool connect and read fault codes etc?

Yes, its same original number.

No, it does not read ECU fault codes.. It can not connect to ECU.

I have written the files correctly.

**peechie** · 24th November, 2020, 04:07 PM

Originally Posted by Sefior

Yes, its same original number.

No, it does not read ECU fault codes.. It can not connect to ECU.

I have written the files correctly.

Read the ECU again and Attach files from your NEW ECU

**Sefior** · 24th November, 2020, 04:16 PM

Originally Posted by peechie

Read the ECU again and Attach files from your NEW ECU

I have attached original files, and even the replacement ecu files.

I have also attached the read files AFTER I wrote the original files on the new ECU.

Is there anything wrong?

**peechie** · 24th November, 2020, 04:33 PM

Seems okay EEPROM inside WinOLS has same VIN number from READ.EPR and read 2 after writing org read.EPR

But eh CKS is different, try writing .EPR again.

Just to confirm, you wrote files like this...

READ.EPR---->EEPROM ST95320
READ.FLS---->EXTFLASH M58BW016DB (MAPS)
READ.MPC--->MICRO MPC563/MPC564

Also your plug in is P113 on KTAG?

**Sefior** · 24th November, 2020, 04:49 PM

Originally Posted by peechie

Seems okay EEPROM inside WinOLS has same VIN number from READ.EPR and read 2 after writing org read.EPR

But eh CKS is different, try writing .EPR again.

Just to confirm, you wrote files like this...

READ.EPR---->EEPROM ST95320
READ.FLS---->EXTFLASH M58BW016DB (MAPS)
READ.MPC--->MICRO MPC563/MPC564

Also your plug in is P113 on KTAG?

I wrote the eeprom again, still doesnt work.

Yes sir, I wrote it exactly like you mention it.

**peechie** · 24th November, 2020, 05:16 PM

Originally Posted by Sefior

I wrote the eeprom again, still doesnt work.

Yes sir, I wrote it exactly like you mention it.

I know the checksum is different for some reason, maybe someone can look further into this?

**Sefior** · 24th November, 2020, 06:54 PM

Originally Posted by peechie

I know the checksum is different for some reason, maybe someone can look further into this?

Do you know any solution ?

**sniegavirs** · 24th November, 2020, 09:18 PM

Originally Posted by Sefior

I opened it very carefully and made sure to not break or damage anything.

If you accessed the BDM port by opening the ECU and removing PCB from aluminum side then i can congratulate you. You killed 2 ECU's!!!

P.S. And why did you even read BDM just to remove DPF? You could easily read and write the map part using k-line pin... Or maybe KTAG is the only tool you have?

**g5n14** · 24th November, 2020, 10:30 PM

Man 100% sure its a dead ECU.

Always do them using kess by connecting CAN directly.

Very bad idea to take PCB out, done it a dozen of times, But with Some really special techniques, main thing is to avoid bending the PCB, otherwise MCU deballs from the PCB. If you did it with screwdrivers and bensin PCB - Both are dead with 100% chance.

I repaired ECUs after unexperienced tuners - just needs a proper reballing and sometimes chips in the corner of the front side gets detached (in that case no BDM r/w)

**Sefior** · 24th November, 2020, 10:34 PM

Originally Posted by sniegavirs

If you accessed the BDM port by opening the ECU and removing PCB from aluminum side then i can congratulate you. You killed 2 ECU's!!!

P.S. And why did you even read BDM just to remove DPF? You could easily read and write the map part using k-line pin... Or maybe KTAG is the only tool you have?

Is it 100% the other ECU is dead? It reads and writes still, not like the first one who doesnt read or write anymore..
I had no idea that you could not open EDC16C31, I am used to opening ECUs and reading it normal.. Did not know these brick because of that..

Is there any other ECU type that you can not open?

I would like to know in advance

**g5n14** · 24th November, 2020, 10:38 PM

Originally Posted by Sefior

Is it 100% the other ECU is dead? It reads and writes still, not like the first one who doesnt read or write anymore..
I had no idea that you could not open EDC16C31, I am used to opening ECUs and reading it normal.. Did not know these brick because of that..

Is there any other ECU type that you can not open?

I would like to know in advance

EDC16C31 Mercedes, EDC17CP45 BMW, MEVD172P BMW, MEVD1724 BMW, MEVD1729 BMW, MEVD172G BMW, MEVD1726 BMW VAG MED17.5, 17.5.25, 17.5.21 also same. If you need to lift board or drill something - always risk of damaging PCB/contaminating ECU with metal residuals.

P.S. I have never damaged Any of those, and I have opened all of them listed above for years before i got proper tools. You just need to use brain and search buttons. Do your homework in time to sleep well.

1st ECU is dead With no com to BDM Because of detached chip Legs in the cornee of the front side (i can make a photo tomorrow When i am at work)

2nd ECUs MCU is partially deballed from PCB, you can reball it and it will work.