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ABS woes Topic is solved

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chris11211
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ABS woes

Post by chris11211 » Sat Feb 22, 2020 6:16 pm

Pass by a volvo mechanic today in order to figure out once and for all what exactly is wrong with my ABS. And it turns out one of the codes i got is a 0070, which means that xemodex wants both the computer and the pump to be repaired.

The mechanic also told me that I should just get the pump from somewhere else instead and save a bit. Either way it seems like it'll come out to $750 , but i'm just asking you guys for some confirmation or second opinion on what should I do, or should i just leave it at that, thanks.

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Re: ABS woes

Post by ignatz » Sun Feb 23, 2020 5:49 am

My 2005 2.5t AWD took an ABS module and pump soon after I bought it 2 1/2 years ago. My shop sends stuff to Zemodex and is happy with their work.
I'm happy that I don't see an ABS light since the repair. Not thrilled at the cost of some of the Volvo repairs, but that's the way it is.
My shop also gave me the option of seeing an ABS warning daily, I just had them fix it.
98 S70 T-5

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Re: ABS woes

Post by chris11211 » Mon Feb 24, 2020 7:35 pm

Alright, I've done some digging on BCM-0070, and I discovered that you could change out the black motor piece on top. So, I was wondering if it needs to be the exact serial number or are the pumps backward/forward compatible with each other?

I'm gonna get the whole ABS assembly on ebay, and I wanted to know if someone changed the pump first, or should they send the module to clone? To see if it'll solve the ABS system.

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Re: ABS woes

Post by abscate » Tue Feb 25, 2020 4:18 am

I don’t think the pump has any CANBUS connections which means it’s pure analog and won’t be VIN pinned.

The module could be but I don’t think it is either.

I’ve got an intermittent BCM 700 on my P2 which I will deal with when I can get it to fault at home, every time I travel it fixes itself.
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Re: ABS woes

Post by vtl » Tue Feb 25, 2020 7:12 am

You have CEM communication errors with modules on both CAN-buses. There's also a low voltage code that may be trigger those errors (it can erase memory in modules and brick them in fact).

I would suggest to erase the codes, let it run until ABS error raises again and then re-read the codes. If communication errors persist for both CAN-buses you may have a problem with CEM, or two or more failing modules on both CAN-buses.
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Re: ABS woes  Topic is solved

Post by chris11211 » Tue Mar 10, 2020 9:54 pm

Update!

So after replacing the abs motor to deal with BCM-0070, apparently I now have abs after a year of ownership. Not sure what else I should look after, but I now get vibrations on the pedal when I hard stop in the rain. Post more if it comes back.
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Re: ABS woes

Post by abscate » Wed Mar 11, 2020 3:22 am

Thanks for that follow up. I’ll grab an ABS pump from next pnp trip for mine

😊

Hmmm I have STC

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