VOLVO
CEM-B1C8414 - Heated rear window relay output circuit. General Electrical Failures. Circuit short to ground or open
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:
4 ModelleS80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Modelle nach Baujahr und Motor anzeigen (4)
Was bedeutet der Fehlercode?
The central electronic module (CEM) controls the rear window defroster. The code is set when the signal from the output is too low, which can be caused by the supply wire being shorted to ground or having an open circuit.
Mögliche Ursachen
- The supply wire to the rear window heater is shorted to ground
- Open circuit on the supply wire to the rear window heater
Was Sie tun können
- 1Read and clear the code, then see whether the rear window heater works after it is switched on
- 2Check the rear window heater fuse and make sure it is intact
- 3Use a multimeter to check that the supply wire has no contact with ground (the bodywork)
- 4Use a multimeter to check that the supply wire is continuous between its two ends
- 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 kann2
- The function switches off permanently after repeated driving cycles in which the fault was detected
- Clearing the fault codes resets the output
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.