VOLVO
CEM-B12C988 - LIN Bus "E". Bus Signal / Message Failures. Bus off
Układ
Centralny moduł elektroniczny (CEM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
2 modeleV40 (2013–), V40 Cross Country (2013–)
Pokaż modele wg rocznika i silnika (2)
Co oznacza ten kod błędu?
The CEM sends messages to the overhead console (OHC) and the rear reading light (RRL) over the LIN bus, but the messages never reach the bus. The fault is stored when this happens, and the bus has then stopped working. The fault affects the panoramic roof sunshade and the passenger compartment lighting.
Możliwe przyczyny
- The LIN bus is short-circuited to voltage or earth
- Damaged overhead console (OHC)
- Damaged rear reading light (RRL)
Co możesz zrobić
- 1Check that the fuses are intact
- 2Note which functions in the roof do not work, as this shows which units are affected
- 3Check the LIN wire for short circuits to voltage or earth and for damage
- 4Use a multimeter to check that the LIN wire is not short-circuited to battery voltage or earth with the connectors disconnected
- 5If the fault remains, have a workshop check the overhead console and the rear reading light, one at a time
Objawy, które możesz zauważyć2
- The electric sunshade in the panoramic roof does not work
- The lighting in the passenger compartment does not work
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.