VOLVO
CEM-B11DB87 - Battery Monitoring Module. Bus Signal / Message Failures. Missing message
System
Sentral elektronikk (CEM)
Volvo-modeller feilkoden gjelder for
Feilkoden har ulik betydning avhengig av modell, årsmodell eller motor. Velg betydningen som gjelder din bil.
Gjelder følgende modeller:
7 modellerS60 (2011–), S80 (2007–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Hva betyr feilkoden?
The battery monitoring sensor (BMS) measures the battery status and sends the data to the CEM, which controls alternator charging. The fault is stored when messages from the sensor are missing on the LIN bus, and The cause may be an open circuit in the LIN connection, a damaged sensor, or a fault in another control module on the same part of the LIN network.
Mulige årsaker
- Open circuit in the LIN connection between the CEM and the battery monitoring sensor
- Damaged battery monitoring sensor
- Internal fault in another control module on the same part of the LIN network
Hva du kan gjøre
- 1Check that the fuses are intact
- 2Check that the sensor receives power from the battery positive and that the wire has no breaks or short circuits to earth
- 3Check the signal wire between the sensor and the CEM for intermittent short circuits to earth and for oxidised or loose connectors
- 4Have a workshop with diagnostic equipment check whether another control module on the LIN bus is blocking communication
- 5If no fault is found in the wiring, the sensor probably needs replacing, which is a job for a workshop
Symptomer du kan merke3
- The automatic start/stop function does not work while driving or at idle
- A red warning symbol and a text message appear in the display
- The charging warning lamp does not work as it should
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