New volvo s60 owner experiencing issues

PHB1 · Apr 2nd, 2021, 19:43

Hi,

Im enjoying my first volvo but experiencing issues.

S60 t5 52reg 80k miles with full service history.

Abs light is on and vida says that there is likely cem fault and its not able to connect.

I have soldered the abs unit but that made no difference.

Had cem out and it looks all dry and theres no visual sign of any damage. Circuit board is coated with transparent red sealer so cant test any components without removing the seal.

I have read that volvo cem is very sensitive to voltage. Vida says that theres only 11.8v on standby and 14.2v when running. I have read about faulty voltage regulators causing all sorts of issues...

Does anyone have any recommendations on next steps? Any help much appreciated.

Also delphi did manage to connect and read codes P0571 brake switch citcuit A and P0504 brake switch A however it was playing up while connecting to the car.

oragex · Apr 2nd, 2021, 20:03

I had a BCM-CEM communication error due to a CEM relay on my 2003, but it didn't threw any lights https://youtu.be/HQxxg_vNDI4
I also got a bad ABS sensor when I pulled on the wire to remove the sensor from the wheel spindle

PHB1 · Apr 2nd, 2021, 21:44

Thank you. I will give it a go. I do have abs and stc light on. Also message says stop safely bad brakes or something...also odometer or trip does not count.

JoeNinety · Apr 2nd, 2021, 23:45

Also check your driveshaft bolts, if either of these are loose then the driveshaft can move in and out causing an ABS fault

oragex · Apr 3rd, 2021, 08:37

14v should mean the alternator is charging fine. To see how the battery does, drive it then park with the battery disconnected - if you lock the car the alarm may start ringing, then measure the battery 1h later

PHB1 · Apr 4th, 2021, 07:00

Yes alternator is fine. Just bought the battery so its fine too. Just not sure about the voltage regulator. Do we know where it is located?

I will take a look at the driveshaft bolts just in case. Would that affect the bcm so much that it stops odometer?

Car drives solid. No wobbles of any kind even on the track at top speed

PHB1 · Apr 4th, 2021, 07:11

Reversing sensors are only other thing thats not working. Car is doing a distorted beep when reverse is selected (used to be silent) but thats it. Saw somewhere that its possible to switch the sensors off in the boot but couldnt find anything obvious

PHB1 · Apr 6th, 2021, 18:24

Drive shaft bolts are fine. Still waiting for the relays to be delivered

PHB1 · Apr 12th, 2021, 18:38

Ok so relays changed and all connections cleaned with contact cleaner but still same message. Unable to connect to cem

davebb · Apr 12th, 2021, 20:17

Hi I think it my be the DIM giving you all of this,
As 2002 is a bad year for DIM,
Dave

Apr 2nd, 2021, 19:43	#1
PHB1 New Member Last Online: Jun 2nd, 2021 07:43 Join Date: Apr 2021 Location: Peacehaven	New volvo s60 owner experiencing issues Hi, Im enjoying my first volvo but experiencing issues. S60 t5 52reg 80k miles with full service history. Abs light is on and vida says that there is likely cem fault and its not able to connect. I have soldered the abs unit but that made no difference. Had cem out and it looks all dry and theres no visual sign of any damage. Circuit board is coated with transparent red sealer so cant test any components without removing the seal. I have read that volvo cem is very sensitive to voltage. Vida says that theres only 11.8v on standby and 14.2v when running. I have read about faulty voltage regulators causing all sorts of issues... Does anyone have any recommendations on next steps? Any help much appreciated. Also delphi did manage to connect and read codes P0571 brake switch citcuit A and P0504 brake switch A however it was playing up while connecting to the car.

Apr 2nd, 2021, 20:03	#2
oragex Premier Member Last Online: Jul 26th, 2021 21:24 Join Date: Jun 2013 Location: Coldnada	I had a BCM-CEM communication error due to a CEM relay on my 2003, but it didn't threw any lights https://youtu.be/HQxxg_vNDI4 I also got a bad ABS sensor when I pulled on the wire to remove the sensor from the wheel spindle __________________ Several Volvo Repair Videos https://www.youtube.com/playlist?lis...ECTts0FSVSOT_c

Apr 2nd, 2021, 23:45	#4
JoeNinety Senior Member Last Online: Today 00:32 Join Date: May 2019 Location: Winchester	Also check your driveshaft bolts, if either of these are loose then the driveshaft can move in and out causing an ABS fault __________________ V70 P2 2006 2.4 Petrol 170bhp Est SE Automatic (5 speed) MG Midget Mk1 1962 Previous: RR TDV8 3.6 '08; RR TD6 3.0 '02; RR P38A V8 '99; Audi A4 Cab 3.0 V6 2004; Volvo 740 GLE Est 1989 Have VIDA & VXDIAG NANO on W10Pro - happy to help

Apr 3rd, 2021, 08:37	#5
oragex Premier Member Last Online: Jul 26th, 2021 21:24 Join Date: Jun 2013 Location: Coldnada	14v should mean the alternator is charging fine. To see how the battery does, drive it then park with the battery disconnected - if you lock the car the alarm may start ringing, then measure the battery 1h later __________________ Several Volvo Repair Videos https://www.youtube.com/playlist?lis...ECTts0FSVSOT_c

Apr 2nd, 2021, 21:44	#3
PHB1 New Member Last Online: Jun 2nd, 2021 07:43 Join Date: Apr 2021 Location: Peacehaven	Thank you. I will give it a go. I do have abs and stc light on. Also message says stop safely bad brakes or something...also odometer or trip does not count.

Apr 4th, 2021, 07:00	#6
PHB1 New Member Last Online: Jun 2nd, 2021 07:43 Join Date: Apr 2021 Location: Peacehaven	Yes alternator is fine. Just bought the battery so its fine too. Just not sure about the voltage regulator. Do we know where it is located? I will take a look at the driveshaft bolts just in case. Would that affect the bcm so much that it stops odometer? Car drives solid. No wobbles of any kind even on the track at top speed

Apr 4th, 2021, 07:11	#7
PHB1 New Member Last Online: Jun 2nd, 2021 07:43 Join Date: Apr 2021 Location: Peacehaven	Reversing sensors are only other thing thats not working. Car is doing a distorted beep when reverse is selected (used to be silent) but thats it. Saw somewhere that its possible to switch the sensors off in the boot but couldnt find anything obvious

Apr 6th, 2021, 18:24	#8
PHB1 New Member Last Online: Jun 2nd, 2021 07:43 Join Date: Apr 2021 Location: Peacehaven	Drive shaft bolts are fine. Still waiting for the relays to be delivered

Apr 12th, 2021, 20:17	#10
davebb Premier Member Last Online: Apr 22nd, 2024 13:38 Join Date: Aug 2013 Location: Emsworth,hants	Hi I think it my be the DIM giving you all of this, As 2002 is a bad year for DIM, Dave

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