Was bedeutet der Fehlercode KVM-U001000?

Diagnose und Fehlercodedefinition für KVM-U001000 (Volvo S60 (2011–), Volvo S80 (2007–), Volvo V40 (2013–)). Steuergerätereparatur bei OBD Tuning.

VOLVO

KVM-U001000 - Medium Speed CAN Communication Bus. General Failure Information. No sub type information

System

Keyless-Entry-Modul (KVM)

Volvo-Modelle, für die dieser Fehlercode gilt

Gilt für folgende Modelle:

9 Modelle

S60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)

Modelle nach Baujahr und Motor anzeigen (9)

Was bedeutet der Fehlercode?

The control module monitors MS-CAN, the medium-speed communication bus that control modules use to exchange information. The code is set when another control module on the network disturbs communication, or when the module's own messages cause interference. The code does not say which type of fault it is, so troubleshooting has to proceed step by step.

Mögliche Ursachen

Short circuit between the CAN wires
Open circuit in one of the CAN wires
Internal fault in another control module on the same part of the CAN network
Internal fault in the control module

Was Sie tun können

1Read the codes in all control modules; when there is a CAN fault, several codes are likely to be present at the same time and they should be troubleshot together
2Check the connectors to the control modules on MS-CAN for oxidation and loose connections, and look for chafed or pinched CAN wires in the visible parts of the wiring harness
3If a control module stays in limp-home mode after several ignition cycles, you can disconnect and reconnect the battery negative terminal to restore the control modules
4Have a workshop measure the resistance in MS-CAN with diagnostic equipment and disconnect control modules one at a time to see which one is disturbing communication
5A control module that communicates faultily has to be replaced, but keep the central electronic module (CEM) in place unless troubleshooting points to a fault inside it
6Clear the codes, road test the car and check that the code is not set again

Symptome, die Sie bemerken können2

No keyless function
The remote control cannot be used

Was der Fehler beeinflussen kann2

The control module switches itself off (so-called bus-off)
It stays off until its power supply is cut, and it tries to communicate again when power is restored

Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.