VOLVO
CEM-B112E13 - Twilight sensor. General Electrical Failures. Circuit open
System
Zentralelektronik (CEM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
7 ModelleS60 (2011–), S80 (2007–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Was bedeutet der Fehlercode?
The CEM receives information about the light conditions from the twilight sensor to control the brightness of the symbols and instrument lighting. The code is stored when the ground lead to the sensor has a break or when the signal cable has contact with voltage. The instrument lighting then does not work, and the headlight vertical adjustment may be wrong.
Mögliche Ursachen
- Break in the signal ground cable
- The signal cable has contact with supply voltage
- Contact resistance and oxidation in the connections
Was Sie tun können
- 1Check that the relevant fuses are intact. Their locations are in the owner's manual or on the fuse box cover
- 2Check that the connections to the twilight sensor are secure and not oxidised
- 3Look for chafing and pinch damage on the ground and signal cables to the twilight sensor
- 4Use a multimeter to check that the ground cable to the sensor is not broken, for example by checking continuity between two contact points
- 5If the fault returns, have a workshop with diagnostic equipment check the sensor and the wiring
Symptome, die Sie bemerken können2
- Instrument lighting does not work
- Headlight vertical adjustment does not follow the steering wheel angle correctly or does not work
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.