IPD sale XeMODeX - Experts in Volvo Electronics

Get email notification of topic replies. Log in or register (free). Amazon Link Buy anything with this and it helps MVS!

Corrupt Canbus, xemodex said good luck

Help, Advice, Owners' Discussion and DIY Tutorials on the Volvo S80 model. Sometimes called an "executive car", the S80 was and continues to be Volvo's top-of-the-line passenger car.
jimmy57
Posts: 6637
Joined: Fri Nov 12, 2010 9:25 am
Year and Model: 2004 V70R GT, et al
Location: Ponder Texas
Has thanked: 4 times
Been thanked: 265 times

Re: Corrupt Canbus, xemodex said good luck

Post by jimmy57 »

Now it is time to unplug ETM, then ECM (ETM is "behind" ECM so unplugging ECM also takes ETM out of network), then ABS. You can plug in the ETM and ECM before going to ABS to keep some modules online. One of the modules flatlining that leg of CAN now that the wiring is taken away as cause.
imac
Posts: 32
Joined: Tue Nov 26, 2019 1:58 pm
Year and Model: 1999 S80 T6
Location: Muskoka, Ontario
Been thanked: 1 time

Re: Corrupt Canbus, xemodex said good luck

Post by imac »

Is this with the engine OFF and the key ON? thanks!
imac
Posts: 32
Joined: Tue Nov 26, 2019 1:58 pm
Year and Model: 1999 S80 T6
Location: Muskoka, Ontario
Been thanked: 1 time

Re: Corrupt Canbus, xemodex said good luck

Post by imac »

Ok, I hooked my scope up to the high speed bus at the CEM and here are the results:

This was all with the key on II.
I turned the key off between plugging/unplugging, then turned the key back to II, and took a screenshot. Figured out how to use this scope a bit better and captured a longer time sample.
-
dec 3a.jpg
dec 3b.jpg
Nothing really jumped out at me as a smoking gun... what do you think?
imac
Posts: 32
Joined: Tue Nov 26, 2019 1:58 pm
Year and Model: 1999 S80 T6
Location: Muskoka, Ontario
Been thanked: 1 time

Re: Corrupt Canbus, xemodex said good luck

Post by imac »

I haven't plugged in vida in some time, figured why not. This is what won't clear, as of today.
dec3.jpg
dec3.jpg (98.2 KiB) Viewed 84 times
imac
Posts: 32
Joined: Tue Nov 26, 2019 1:58 pm
Year and Model: 1999 S80 T6
Location: Muskoka, Ontario
Been thanked: 1 time

Re: Corrupt Canbus, xemodex said good luck

Post by imac »

The 3rd waveform with the ETM & ABS disconnected is the only one that the ground reference isn't pulled out of whack, but the waveform is junk
User avatar
yagger
Posts: 322
Joined: Thu Mar 24, 2016 4:29 pm
Year and Model: S60 2005 2,5T
Location: DreamLand
Has thanked: 6 times
Been thanked: 25 times

Re: Corrupt Canbus, xemodex said good luck

Post by yagger »

I would start from replace CEM. This is a main module.
User avatar
yagger
Posts: 322
Joined: Thu Mar 24, 2016 4:29 pm
Year and Model: S60 2005 2,5T
Location: DreamLand
Has thanked: 6 times
Been thanked: 25 times

Re: Corrupt Canbus, xemodex said good luck

Post by yagger »

If you have a CEM from same MY car, not need to program it for check signal only.
imac
Posts: 32
Joined: Tue Nov 26, 2019 1:58 pm
Year and Model: 1999 S80 T6
Location: Muskoka, Ontario
Been thanked: 1 time

Re: Corrupt Canbus, xemodex said good luck

Post by imac »

I sent my CEM and ECM to xemodex, they said they were both okay!
User avatar
yagger
Posts: 322
Joined: Thu Mar 24, 2016 4:29 pm
Year and Model: S60 2005 2,5T
Location: DreamLand
Has thanked: 6 times
Been thanked: 25 times

Re: Corrupt Canbus, xemodex said good luck

Post by yagger »

I trust my eyes only, sorry. Maybe xemodex is good, but I do not trust them. I saw result of them work (DIM repair) and I was confused and upset after that show.
imac
Posts: 32
Joined: Tue Nov 26, 2019 1:58 pm
Year and Model: 1999 S80 T6
Location: Muskoka, Ontario
Been thanked: 1 time

Re: Corrupt Canbus, xemodex said good luck

Post by imac »

If these guys couldn't touch it, who can I trust to test my CEM, ECM, TCM, ABS?

-
xemodex.jpg

-
I'm in Canada, xemodex is only a couple hours drive and I had read mostly good things on forums about them, but maybe I need a second opinon.
Post Reply
  • Similar Topics
    Replies
    Views
    Last post