VOLVO
CEM-DE23 - Communication with the trailer module (TRM). Signal missing
Układ
Centralny moduł elektroniczny (CEM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
5 modeliC30 (2007–2013), C30 Electric (2011–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Co oznacza ten kod błędu?
The central module receives no communication from the trailer module (TRM), so functions controlled by it stop working. The cause may be a missing supply or earth to the module, contact resistance at connections, a break in the CAN low-speed network, or a module that is not intended for this car.
Możliwe przyczyny
- No voltage supply to the trailer module (TRM)
- Open circuit in the earth lead to the trailer module (TRM)
- Contact resistance at the connections
- Open circuit in the CAN low-speed network wiring to the trailer module (TRM)
- The trailer module does not belong to this car, e.g. a used unit with other software
- Several fault codes for communication with other modules on the low-speed network point to a common fault on the CAN network
Co możesz zrobić
- 1Check that the main fuse at the battery and the fuse for the trailer module are intact, using the owner's manual
- 2With a multimeter, check that the supply wire to the trailer module has no break and no contact with ground
- 3With a diagnostic tool, try to read the module ID. If it can be read, CAN communication is probably fine and the fault may be temporary
- 4If the fault remains, have a workshop check the earth point and replace the module if needed
Objawy, które możesz zauważyć1
- Functions controlled by the trailer module do not work
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.