VOLVO
DEM-U012100 - Lost Communication With Brake Control Module. General Failure Information. No sub type information
System
Firehjulsdrift (DEM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
8 modellerS60 (2011–), S80 (2007–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Hva betyr feilkoden?
The four-wheel drive control module (DEM) continuously receives information from the brake control module (BCM), including the speed of each wheel, over CAN communication. If communication with the brake control module is lost, the code is set. The fault may lie in the brake control module, in the communication cable, or in the connectors between them.
Mulige årsaker
- Open circuit in the communication cable
- Communication cable shorted to ground
- Communication cable shorted to voltage
- Contact resistance or oxidation in the connections
- Damaged brake control module (BCM)
Hva du kan gjøre
- 1Check that the fuses are intact; their locations are in the owner's manual or on the fuse box cover
- 2Test drive the vehicle to see if the fault returns, and note whether the brakes feel different
- 3If you have a diagnostic tool, read the brake control module fault codes first and remedy them before clearing this code
- 4Check the connectors on the communication cable for oxidation and loose fit, and follow the cable for chafing and damage
- 5The braking system is safety-critical: if the fault remains or the brakes feel different, have a workshop check the brake control module and the communication
Symptomer du kan merke1
- Four-wheel drive does not work
Hva feilen kan påvirke2
- Four-wheel drive is disengaged
- Four-wheel drive has reduced function
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