VOLVO
CEM-B108788 - LIN Bus "A". 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 talks to the light switch module (LSM), the left steering wheel buttons (SWSL) and the steering wheel module (SWM) over a shared LIN bus. The fault shows that the CEM cannot get its messages onto the bus, so the connected functions stop working.
Możliwe przyczyny
- The LIN bus is shorted to voltage or to ground
- The light switch module (LSM) is damaged
- The left steering wheel buttons (SWSL) are damaged
- The steering wheel module (SWM) is damaged
Co możesz zrobić
- 1Read off and note the code, clear it and check whether it returns when you use the lights, indicators and wipers
- 2Check that the fuses for the lighting, wiper and steering wheel functions are intact
- 3Check that the connectors to the light switch module and the steering wheel buttons are fully engaged, dry and not corroded
- 4Use a multimeter (ignition off, connectors unplugged) to check that the LIN wire has no connection to ground or to battery positive
- 5If you have a diagnostic tool, activate the indicators with the tool and check that they start
- 6If the fault remains, have a workshop check the control modules on the bus
Objawy, które możesz zauważyć5
- The headlights do not work
- Turn signals do not work
- The windscreen wiper or windscreen washer does not work
- The cruise control cannot be engaged
- The trip computer does not work
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.