VOLVO
CEM-B1C8412 - Heated rear window relay output circuit. General Electrical Failures. Circuit short to battery
Układ
Centralny moduł elektroniczny (CEM)
Modele Volvo, których dotyczy ten kod błędu
Ten kod błędu ma różne znaczenie w zależności od modelu, rocznika lub silnika. Wybierz znaczenie, które dotyczy Twojego samochodu.
Dotyczy następujących modeli:
7 modeliS60 (2011–), S80 (2007–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Co oznacza ten kod błędu?
The central electronic module (CEM) controls the heated rear window. The code is set when the output signal is too high, which is caused by the supply wire to the rear window heater being shorted to voltage.
Możliwe przyczyny
- The supply wire to the rear window heater is shorted to voltage
Co możesz zrobić
- 1Read and clear the code, then switch on the rear window defroster and see whether it heats
- 2Check the rear window heater fuse in the passenger compartment fuse box
- 3Look for chafing and damaged insulation on the supply wire to the rear window heater
- 4Use a multimeter to see whether the supply wire has voltage with the ignition off, which shows a short to voltage
- 5If the wire is intact, have a workshop with diagnostic equipment check the module output
Objawy, które możesz zauważyć1
- Electric heating of the rear window does not work
Na co może wpływać usterka3
- The function switches off during the driving cycle in which the fault is detected
- After repeated driving cycles with the fault, the function is switched off permanently
- Clearing the fault codes and starting a new driving cycle resets the output
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.