VOLVO
CEM-B11D487 - Low Speed Collision Mitigation By Braking Disabled. Bus Signal / Message Failures. Missing message
Układ
Centralny moduł elektroniczny (CEM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
6 modeliS60 (2011–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), XC60 (2009–)
Co oznacza ten kod błędu?
The Central Electronic Module (CEM) monitors the signals from the collision speed module (CVM), the brake control module (BCM) and the engine control module (ECM) for active safety. The fault is stored when the signal from any of these is missing or disturbed.
Możliwe przyczyny
- Power supply to one of the modules CVM, BCM or ECM is missing
- Open circuit in the earth wire to one of the modules
- Contact resistance in the connections
- Open circuit or short circuit in the CAN wiring
- A used module with different software or hardware, which does not match this car
Co możesz zrobić
- 1Check that the fuses are intact
- 2If you have a diagnostic tool, read the freeze frame data of the fault code to see which module is missing its signal
- 3Check the earth wires and connectors at the CVM, BCM and ECM, and that they are secure and not corroded
- 4Check the CAN wiring for chafing, pinch damage and breaks
- 5Drive carefully and keep a greater distance, as ABS and braking at low speed may be affected until the fault is repaired
- 6If the fault returns, have a workshop with diagnostic equipment check the module that is missing its signal
Objawy, które możesz zauważyć4
- The engine does not start, or the starter does not turn over, sometimes or always
- The engine lacks power or stalls at times
- ABS does not work, or activates suddenly
- City Safety does not work or does not intervene when needed
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.