VOLVO
CEM-B11DB83 - Battery Monitoring Module. Bus Signal / Message Failures. Value of signal protection calculation incorrect
System
Sentral elektronikk (CEM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
2 modellerV40 (2013–), V40 Cross Country (2013–)
Vis modeller per årsmodell og motor (2)
Hva betyr feilkoden?
The CEM keeps watch on the battery monitoring sensor (BMS) across a shared LIN bus. The message from the sensor carries a checksum that does not match when the fault is stored, and The causes are an open circuit in the LIN connection between the CEM and the sensor, or a damaged sensor.
Mulige årsaker
- Open circuit in the LIN connection between the CEM and the battery monitoring sensor
- Damaged battery monitoring sensor
Hva du kan gjøre
- 1Check that the fuses are intact
- 2Check the wire from the battery monitoring sensor to the battery positive for breaks and short circuits to earth
- 3Check the signal wire between the sensor and the CEM for intermittent short circuits to earth, breaks, and oxidised or loose connectors
- 4Clear the fault code and check whether it returns after the engine has been started
- 5If no fault is found on the wiring to the CEM, have a workshop check the battery monitoring sensor, which will probably need replacing
Symptomer du kan merke2
- The automatic start/stop function does not work while driving
- The automatic start/stop function does not work at idle
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