Communication Problems With the Central Electronic Module (CEM)

Communication problems with the central electronic module (CEM)

Information
Hint: In the event of communication problems, the fault may exist in other parts of the communications network. The role of the central electronic module (CEM) is to control the communications network and to store diagnostic trouble codes (DTCs) in the event of communication problems between control modules.

If there are diagnostic trouble codes (DTCs) referring to communication problems stored for the brake control module (BCM) in the central electronic module (CEM), these must be fault traced first.

Were diagnostic trouble codes (DTCs) stored in the central electronic module (CEM)?

Yes - DONE

No - Checking the central electronic module (CEM)

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Checking the central electronic module (CEM)
Check that a central electronic module (CEM) from another model has not been installed.
Check that the central electronic module (CEM) is correctly configured. Select vehicle communication and central electronic module (CEM). Read off the configuration and compare with the car specification
Remedy as necessary.

Continue - DONE

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