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BCM or CEM failure?

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive "P2" platform cars.

2001 - 2007 V70
2004 - 2007 V70 R
2001 - 2007 XC-70
2001 - 2009 S60
2003 - 2007 S60 R

Northernpaw
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Joined: Fri Apr 08, 2016 10:20 am
Year and Model: 2007 XC70
Location: Alberta
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Northernpaw

BCM or CEM failure?

Post by Northernpaw » Fri Apr 08, 2016 10:38 am

I have a new to me 2007 XC70 that came with:
Message:
- Brake Failure Stop Safely
- Park assist service required
- Engine maintenance required

I pulled the next level of DTC codes
- BCM NOT CHECKED
- SRS ready
- ECM DTC SET
- CEM DTC SET
and other DTC sets present

I checked the CEM and there is no power at fuse 15 (5A) which i believe is the BCM unit?

Suggestion before pulling the CEM out?

nsjames
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Year and Model: 04 XC70
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nsjames

Re: BCM or CEM failure?

Post by nsjames » Fri Apr 08, 2016 1:29 pm

xemodex has a troubleshooting flow chart for BCM/CEM stuff.

I'm pretty sure that if you've not got power comig from the CEM, it's probably CEM.
check their webpage.

Northernpaw
Posts: 3
Joined: Fri Apr 08, 2016 10:20 am
Year and Model: 2007 XC70
Location: Alberta
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Northernpaw

Re: BCM or CEM failure?

Post by Northernpaw » Fri Apr 08, 2016 2:46 pm

I just talked with them. Great guys! Likely the CEM and they gave me one more test to do before pulling it.
Thanks!

Northernpaw
Posts: 3
Joined: Fri Apr 08, 2016 10:20 am
Year and Model: 2007 XC70
Location: Alberta
Has thanked: 0
Been thanked: 0
Canada
Northernpaw

Re: BCM or CEM failure?

Post by Northernpaw » Sun Apr 10, 2016 9:05 pm

So i short circuited the fuse for BCM (#15) and the Brake Failure message disappeared ! So the problem is not the BCM but the CEM. Cheaper to fix but a pain to remove.

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