VOLVO
CEM-4F31 - Battery temperature. Signal too low
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 CEM treats it as a fault when the signal wire from the battery temperature sensor is shorted to ground. The code is then set, and the battery may discharge. The battery temperature may also be shown incorrectly.
Możliwe przyczyny
- The signal wire is shorted to ground
- A damaged battery temperature sensor
Co możesz zrobić
- 1With a diagnostic tool, if you have one, check that the battery temperature in live data is reasonable
- 2Check that the connectors at the battery and at the CEM are seated and not corroded
- 3Use a multimeter to check that the signal wire from the battery sensor is not shorted to ground
- 4If the fault remains, have a workshop replace the battery temperature sensor
- 5After the work, clear the code and check that the battery charges normally
Objawy, które możesz zauważyć1
- The battery discharges
Na co może wpływać usterka1
- The battery temperature is shown incorrectly
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.