VOLVO
CEM-B12C986 - LIN Bus "E". Bus Signal / Message Failures. Signal invalid
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 communicates with the overhead console (OHC) and the rear reading light (RRL) over the LIN bus. The fault is stored when messages on the bus become corrupt, and The fault affects the functions that are controlled from the overhead console and the rear reading light.
Mulige årsaker
- Contact resistance, oxidation or poor contact in the connector terminals and connections
- Damaged overhead console (OHC)
- Damaged rear reading light (RRL)
Hva du kan gjøre
- 1Check that the fuses are intact
- 2Try the buttons for the rear reading light and the panoramic roof sunshade and note which functions do not work
- 3Check the connectors at the overhead console and the rear reading light: loose or oxidised connectors should be cleaned and pressed in
- 4Check the LIN wire between the CEM, the overhead console and the rear reading light for chafing and pinch damage
- 5If the fault remains, have a workshop with diagnostic equipment check the overhead console and the rear reading light
Symptomer du kan merke2
- The electric sunshade in the panoramic roof does not work
- The lighting in the passenger compartment does not work
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