VOLVO
CEM-B109719 - Heated Windshield Relay. General Electrical Failures. Circuit current above threshold
System
Zentralelektronik (CEM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
2 ModelleV40 (2013–), V40 Cross Country (2013–)
Modelle nach Baujahr und Motor anzeigen (2)
Was bedeutet der Fehlercode?
The CEM controls the front windscreen defroster through a relay. The fault shows that the relay cannot be activated when the defroster is switched on with the engine running, which suggests the control signal to the relay is shorted to voltage.
Mögliche Ursachen
- The control wire for the defroster relay is shorted to voltage
Was Sie tun können
- 1Read off and note the code, clear it and check whether it returns when you switch the defroster on with the engine running
- 2Check that the fuses for the front windscreen defroster are intact
- 3Check that the connectors in the defroster wiring harness are fully engaged and not damaged
- 4Use a multimeter (ignition off, connector unplugged) to check that the relay control wire is not at battery voltage
- 5If you have a diagnostic tool, activate the front windscreen defroster with the tool and check that it starts
- 6If the fault remains, have a workshop check the relay and the wiring
Symptome, die Sie bemerken können1
- Windscreen defog and defrost does not work
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.