V60 D3 multiple system faults, power issue?

[GJB]

Have you got a dash cam fitted?

[rbcohen]

Originally Posted by GJB

Have you got a dash cam fitted?

Unfortunately no, nothing aftermarket on the car.

I have a USB cigarette lighter charger thingy, but I've had issues with and without that plugged in.

[Clan]

Originally Posted by rbcohen

Unfortunately no, nothing aftermarket on the car.

I have a USB cigarette lighter charger thingy, but I've had issues with and without that plugged in.

water from the screen may have got on the CEM plug pins and terminals . take the glove box out , unplug them all and have a look , it is a good idea to test the grip of the many female terminals in the plugs as well , seen some loose ones which give odd problems .

[rbcohen]

Originally Posted by Clan

water from the screen may have got on the CEM plug pins and terminals . take the glove box out , unplug them all and have a look , it is a good idea to test the grip of the many female terminals in the plugs as well , seen some loose ones which give odd problems .

I've pulled the glovebox out and can't find any signs of water. In the photo I'm guessing the CEM is in the white plastic. Is it ok to just unplug things and check? Nothing felt loose but didn't want to just start unplugging things.

The Mrs hosed the windscreen while I watched for any drips but nothing after 10 minutes. First glazer I've been to says the windscreen looks fine and it's the original, so dealer have said they'll highlight the issue so I can pass information on to a glazer. So far most companies I've spoken to are confused when I ask about rebonding.

[Clan]

Originally Posted by rbcohen

I've pulled the glovebox out and can't find any signs of water. In the photo I'm guessing the CEM is in the white plastic. Is it ok to just unplug things and check? Nothing felt loose but didn't want to just start unplugging things.

The Mrs hosed the windscreen while I watched for any drips but nothing after 10 minutes. First glazer I've been to says the windscreen looks fine and it's the original, so dealer have said they'll highlight the issue so I can pass information on to a glazer. So far most companies I've spoken to are confused when I ask about rebonding.

Yes that is the CEM , of course disconnect battery before unplugging ! Otherwise you get fault codes . wise to check terminal pins if you still have it dismantled .

[rbcohen]

Pulled out everything I could, all looked fine, clean and tight. The invoice from the dealership does say they checked CEM and connections, but was worth another look especially as the radio playing up is new.

Was hoping I'd see some water damage. Shame. Was an informative exploration though.

Next week I'll try to figure out whether the windscreen is indeed leaking. I'm hoping it is, because at least it could explain things.

[rbcohen]

Unfortunately the mystery continues. The windscreen was re-bonded, as if you pushed it at the top it would move. I hoped this meant there was a small leak, and it would explain the electrical/communication faults.

Two weeks after the re-bonding the car fails to start on the Mrs. with multiple error messages again. The car started fine the next day, and I read the fault codes when the car got back home.

I couldn't find an easy way to export the timeline, but at 16:20 there are ECM codes thrown. This may have been when the car was first started, or whilst being driven on a short 10 minute journey. The car was then parked until 18:10, when on trying to start the car it refuses with multiple warnings. Codes are all pasted below.

With so many codes it is difficult to know where to start looking. I will probably have to take it back to the local Volvo dealership, as I know of no local Volvo specialists (South East). After 4 hours of investigation they had no clue what it could be, so I'm a little reluctant to go back and throw more money at it. Perhaps I can find a shop that specialises in electrical issues.

If anyone has any suggestions I would be most grateful, starting to lose hope on this one!

BCM-U000100 High Speed CAN Communication Bus DTC is found not active.
BCM-U012600 Lost Communication With Steering Angle Sensor Module
CEM-B11D487 Low Speed Collision Mitigation By Braking Disabled - Bus Signal / Message Failures - Missing message
CEM-U000111 High Speed CAN Communication Bus - General Electrical Failures - Circuit short to ground
CEM-U000188 High Speed CAN Communication Bus - Bus Signal / Message Failures - Bus off
CEM-U010000 Lost Communication With Engine control module
CEM-U010100 Lost Communication with Transmission control module
CEM-U012100 Lost Communication With Brake Control Module
CEM-U012600 Lost Communication With Steering Angle Sensor Module
CEM-U012800 Lost Communication With Electrical parking brake
CEM-U013100 Lost Communication With Power Steering Control Module (PSCM)
CEM-U015100 Lost Communication With Supplemental Restraint System Module
CEM-U023500 Lost Communication With Closing Velocity Module
CEM-B102921 Accelerator Pedal Sensor - General Signal Failures - Signal too low
CVM-U000100 High Speed CAN Communication Bus DTC is found not active.
DIM-U014000 Lost Communication With Central electronic module
DIM-U015100 Lost Communication With Supplemental Restraint System Module
DIM-U010000 Lost Communication With Engine control module
ECM-P003A85 Turbocharger/Supercharger Boost Control A Position Exceeded Learning Limit - Bus Signal / Message Failures - Signal above allowable range
ECM-P023400 Turbocharger/Supercharger A Overboost Condition
ECM-P004900 Turbocharger/Supercharger Turbine Overspeed
ECM-P023600 Turbocharger/Supercharger Boost Sensor A Circuit Range/Performance
ECM-P023800 Turbocharger/Supercharger Boost Sensor A Circuit High
ECM-U007300 Control module communication bus "A" Off
ECM-P085029 Park / Neutral Switch Input Circuit - General Signal Failures - Signal signal invalid
ECM-P060D00 Internal Control Module Accelerator Pedal Position Performance
ECM-P085086 Park / Neutral Switch Input Circuit - Bus Signal / Message Failures - Signal invalid
ECM-U012900 Lost Communication With Brake System Control Module
ECM-U016700 Lost Communication With Vehicle Immobilizer Control Module
ICM-U012600 Lost Communication With Steering Angle Sensor Module
PAM-U042200 Invalid Data Received From Central electronic module
PBM-U014000 Lost Communication With Central electronic module
PBM-U000100 High Speed CAN Communication Bus DTC is found not active.
PSCM-U000100 High Speed CAN Communication Bus
PSCM-U012600 Lost Communication With Steering Angle Sensor Module
SAS-U000188 High Speed CAN Communication Bus - Bus Signal / Message Failures - Bus off
SAS-U014000 Lost Communication With Central electronic module
SRS-U000100 High Speed CAN Communication Bus DTC is found not active.
TCM-U210000 Control Module Not Configured DTC is found active.
TCM-U000100 High Speed CAN Communication Bus DTC is found not active.

[rbcohen]

Since the last posting the car had been fine for months. I was almost ready to accept that the windscreen re-bonding had fixed it, and that water was to blame.

Until last week, when I got the car washed, and the ensemble of electrical issues re-occured.

I'm still convinced it is water ingress, but the dealership can't find a trace of water anywhere. Volvo HQ have suggested loose wiring and a few places for them to start looking. I suppose when the car is "washed", its an inside and out job, so perhaps the hoovering or chair movement is knocking something.

Hoping this rabbit hole leads somewhere..

[1970mps]

Hi. I guess you may have sorted your car now, but I have a v60 with several similar faults, did you find out what was happening, and how TG o remove each code?
Thanks.
Mike

[rbcohen]

I think the issue is finally fixed, it's been weeks and a few thousand miles without issue.

For me it was a cable with a small nick in the sheath grounding against the body. The cable was near the alternator and must have been damaged when the alternator was changed (a couple of weeks before this started).

I had the car at the dealership three times, they had tried a lot of things, and found the cable eventually. The fact that it happened after a car wash is strange, there must have been some water reaching the cable, but in the end was a distraction.

What sort of faults are you getting? Any work done recently that might have damaged/loosened a cable or connector?