Computers/Controls - New Central Electronics Module

22186

CEM: New generation CEM and wiring configuration introduced structure week 09w46

Date 12-22-2009

Reference: Wiring diagrams. 2010 supplement

Note!
If using a printed copy of this Retailer Technical Journal, first check for the latest online version.





AFFECTED VEHICLES

DESCRIPTION:

A new CEM (Central Electronics Module), generation 2, has been introduced from structure week 09w46.

The new CEM is different from the old CEM in that the connectors have a new pin configuration/signal description as well as a new fuse arrangement. IT IS NOT BACKWARDS COMPATIBLE. The new CEM can only be used in vehicles after the break points above. In addition, the wiring diagrams for the CEM and fuse arrangements are different than the earlier vehicles.





To clarify this, an example of the signal description for the early and late type CEM for connector C1 positions 1 through 6 is above.

SERVICE: The new CEM is introduced structure week 09w46. P/N on the new spare part CEM is P/N 31254837.





IMPORTANT

SPECIAL TOOLS:

There are no changes to the CEM Break out box adapter (9511428) for the new CEM wiring configuration as the connectors on the CEM themselves are identical.