VOLVO
CEM-B1C8412 - Heated rear window relay output circuit. General Electrical Failures. Circuit short to battery
System
Zentralelektronik (CEM)
Volvo-Modelle, für die dieser Fehlercode gilt
Dieser Fehlercode hat je nach Modell, Modelljahr oder Motor unterschiedliche Bedeutungen. Wählen Sie die Bedeutung, die für Ihr Fahrzeug 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 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.
Mögliche Ursachen
- The supply wire to the rear window heater is shorted to voltage
Was Sie tun können
- 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
Symptome, die Sie bemerken können1
- Electric heating of the rear window does not work
Was der Fehler beeinflussen kann3
- 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
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.