Drivetrain - DEM Failure During Software Update

Status: Released

Status Date: 2010-04-08

Issue Date: 2010-04-06

Reference: VIDA, VSTG

Title: Differential Electronic Module (DEM) Micro controller failure

Ref No: US21868.1.0 en-GB

Partner 3 US 7510 Volvo Cars North America

Func Group: 4651

Func Desc: final drive; Automatic Operation Clutch

Attachment





Vehicle Type





CSC

DTC

Text

For Your Information CSC Customer Symptom Code

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

DESCRIPTION:

During a software download (SWDL) the DEM micro controller might fail. The symptom will be a "dead" DEM on the Controller Area Network (CAN). If the DEM has no communication for 5 seconds after the ignition is switched to position 2 some other control units might set Diagnostic Trouble Codes (DTCs) for "No communication" with the DEM.

PRODUCT MODIFICATION:

The new DEM with new Primary Boot Loader (PBL) was introduced during structure week 2009 week 25 for plant code 21 and during structure week 2009 week 26 for plant code 22. See chassis ranges in the header. Note that the plant code can be found in the 11th digit of the Vehicle Identification Number (VIN). A "1" in the 11th digit of the VIN indicates that the vehicle was built in plant 21 and a "2" in the 11th digit of the VIN indicates that the vehicle was built in plant 22.

SERVICE:

Check the DEM through VIDA/SoftWare/Advanced/Send Prog. Choose DEM and try to read Hardware number or Serial number. If this is not possible make sure that the power supply to DEM is OK.

If the power supply is OK and there is still no communication with the DEM replace the DEM according to VIDA.

VOLVO SERVICE TIME GUIDE (VSTG) INFO:

Operation number 46030-2 - Differential Electronic Module (DEM) replace - See VSTG Operation number 36004-2 - Control module Software download - See VSTG

- Claims may be submitted under the new car warranty when there is a documented customer complaint using claim type: 01

- Labor times are valid at the time of release and are subject to change.