IPD sale XeMODeX - Experts in Volvo Electronics
Did you know? 🤔
Logged in users can get email notification of topic replies Log in or register (free).
Amazon Link Buy your stuff using this and it helps MVS!

Can-bus guru's advice needed please. Topic is solved

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

precopster
Posts: 7469
Joined: Sat Aug 21, 2010 12:20 am
Year and Model: Lots
Location: Melbourne Australia
Has thanked: 4 times
Been thanked: 106 times
Australia
precopster

Re: Can-bus guru's advice needed please.

Post by precopster » Mon Apr 10, 2017 3:55 pm

Do some probing as per jimmy57s post on 5th March. You will probably find that BCM is the corrupted module.

You can even remove BCM and test the car over short journeys. Yes there will be multiple flashing lights but you will still have hydraulic power assisted 4 wheel discs which is a lot safer than many small cars without this.
Current cars:2002 XC70, 2006 Ssangyong Rodius (Stavic), 2006 XC90 2.5T, VW Transporter 2.5TDI

www.precisioncarmodules.com.

Free2drive!
Posts: 221
Joined: Tue Oct 24, 2006 3:31 am
Year and Model: 2004 V70
Location: York
Has thanked: 0
Been thanked: 0
Great Britain
Free2drive!

Re: Can-bus guru's advice needed please.

Post by Free2drive! » Thu May 18, 2017 2:36 am

Bit of an update!

Car failed its inspection. One seized front caliper and the other one leaking.

I've replaced both front calipers and brake hoses, discs and pads. No more anti skid/brake stop safely messages.

All I get now is a drop into limp mode then transmission service after I restart. The speedo drops and CCM drops out everything else works.

This has happened twice in the last month.

Car shifts fine and just throws up no communication with ECM, TCM and CEM.

Any ideas?
Thanks
Matt

precopster
Posts: 7469
Joined: Sat Aug 21, 2010 12:20 am
Year and Model: Lots
Location: Melbourne Australia
Has thanked: 4 times
Been thanked: 106 times
Australia
precopster

Re: Can-bus guru's advice needed please.

Post by precopster » Thu May 18, 2017 4:45 am

If it's a speed sensor fault that relates back directly to the BCM.

Car needs to be read with Vida
Current cars:2002 XC70, 2006 Ssangyong Rodius (Stavic), 2006 XC90 2.5T, VW Transporter 2.5TDI

www.precisioncarmodules.com.

User avatar
mrbrian200
Posts: 1542
Joined: Wed Jan 20, 2016 8:47 am
Year and Model: 2006 S60 2.5T FWD
Location: Northern Indiana/Chicago
Has thanked: 7 times
Been thanked: 80 times
United States of America
mrbrian200

Re: Can-bus guru's advice needed please.

Post by mrbrian200 » Sun May 21, 2017 3:45 pm

Free2drive! wrote:
Fri Mar 03, 2017 2:25 am
Is there a common connector point for the CEM, TCM, BCM and ECM?
If you're talking about power distribution, ground points are varied but studying the diagrams there is a +B that is shared between these all 4 of these modules, originating from one or both of the larger red +B wires running into the CEM direct from the trunk: Powers the CEM and appears to branch out internally through fuses located on the CEM that supply +B to one or more circuits in the other 3. The ECU gets +B from several parallel circuits, one of them comes from the CEM. It's difficult to say whether this is always on or switched with an internal relay just from looking at the diagram.

Post Reply
  • Similar Topics
    Replies
    Views
    Last post