VOLVO
CEM-B109714 - Heated Windshield Relay. General Electrical Failures. Circuit short to ground or open
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 supplying the defroster stays closed although the defroster is not switched on, so the defroster receives power unnecessarily. The fault is checked when the ignition is on and the defroster is not activated.
Mögliche Ursachen
- The control wire to the defroster relay is shorted to ground
- Open circuit in the control wire to the defroster relay
Was Sie tun können
- 1Read off and note the code, clear it and check whether it returns when you switch the defroster on
- 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 corroded
- 4Use a multimeter (ignition off, connector unplugged) to check that the relay control wire has no connection to ground and no break
- 5If you have a diagnostic tool, activate the front windscreen defroster with the tool and check whether 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.