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Billy, Trainer/Master tech.
Category: UK Car
Satisfied Customers: 3498
Experience:  Trainer - master tech., SAE member
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Volvo XC90: What else do you need know? Please tell me what

This answer was rated:

What else do you need know? Please tell me what steps I can do so I can let you know what is the result.

I'm a moderator for this topic. I've been working hard to find a Professional to assist you right away, but sometimes finding the right professional can take a little longer than expected.

I wonder whether you're ok with continuing to wait for an answer. If you are, please let me know and I will continue my search. If not, feel free to let me know and I will cancel this question for you.

Thank you!
Hello and Welcome!
I'm Billy and i will assist you with your inquiry.
Feel free to ask if any further info is needed.

MY apologies for the delay, thank you for your patience.

- are all the windows and mirrors not working?
- if you use the driver's switch, or the other switches, it is the same?
- what exactly are the fault codes retrieved using the VIDA?
Customer: replied 4 years ago.

- all mirrors not working

- only driver switch from rear windows working fine left/right

- rear switches from windows left/right working as well

- other switches from front passenger and driver door doesnt work

- central locking work only if I use key, only front passenger door doesnt work. Remote locking doesnt work.

I attached screenshoot from VIDA with many fault codes.

Customer: replied 4 years ago.

Vida fault codes screen shoot link:




















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































This seems like a faulty control module (CEM most likely). However, before getting to this, i would double check the connectors on the control modules (CEM AND DDM), and check the ground points, under the carpet in driver and passenger footwell. Having check these, and if the problem persists, then you need to start with the CEM. You can check as they should ber able to test your control modules and fix (rebuild) them if needed.

Thank you for your trust! Get back to me if you need more info...Thank you in advance for the positive rating...

Regards, Billy.
Billy, Trainer/Master tech.
Category: UK Car
Satisfied Customers: 3498
Experience: Trainer - master tech., SAE member
Billy and 2 other UK Car Specialists are ready to help you
Customer: replied 4 years ago.

hi Billy


Im allready chacked ground points and connectors between cem and ddm, nothing changed, I ordered the cem and waiting for delivery, I have someone who will program it to me, but maybe you have any wiring or somthing like that for connectors on the control modules (CEM AND DDM)?, maybe I missed somthing.


Regards marek

Hello Mareck,

Here are the pin assignments on the CEM:
click here for details