VOLVO
CEM-B108888 - LIN Bus "B". Bus Signal / Message Failures. Bus off
System
Zentralelektronik (CEM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
2 ModelleV40 (2013–), V40 Cross Country (2013–)
Modelle nach Baujahr und Motor anzeigen (2)
Was bedeutet der Fehlercode?
The CEM talks to the movement sensor and the siren over a shared LIN bus. The fault shows that the messages the CEM sends never reach the bus, so the alarm parts cannot be controlled.
Mögliche Ursachen
- The LIN bus is shorted to voltage or to ground
- Internal fault in the movement sensor (IMS)
- Internal fault in the siren (BBS)
Was Sie tun können
- 1Clear the code and check whether it returns after locking the car with the remote control
- 2Check that the connectors to the movement sensor and the siren are fully engaged and dry
- 3Check that the fuse for the alarm is intact
- 4Use a multimeter (ignition off, connectors unplugged) to check that the LIN wire has no connection to ground or battery positive
- 5If you have a diagnostic tool, read the alarm status in live data and check whether it changes when you lock and unlock the car
- 6If the fault remains, have a workshop check the movement sensor and the siren
Symptome, die Sie bemerken können2
- The alarm does not start
- Other alarm functions do not work correctly
Was der Fehler beeinflussen kann1
- The siren beeps several times if the bus communication drops out
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.