VOLVO
CEM-B1C7719 - Rear Wiper 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 central electronic module (CEM) controls the rear wiper through a relay in the engine bay fuse box. The code is set when the signal wire to the relay is shorted to voltage, so the control module detects that the circuit is drawing too much current.
Mögliche Ursachen
- Short to voltage on the signal wire
Was Sie tun können
- 1Read and clear the code, then run the rear wiper and see whether the fault comes back
- 2Check the rear wiper fuse in the engine bay fuse box; a blown fuse is a sign that the circuit is overloaded
- 3Use a multimeter to see whether the signal wire has voltage with the ignition off, which shows contact with a live wire
- 4Look for chafed cables or damaged insulation on the wire between the control module and the relay, especially where it may have been pinched
- 5If the wire is sound, have a workshop with diagnostic equipment check the relay and the control module
Symptome, die Sie bemerken können1
- The rear wiper does not work
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.