VOLVO
CEM-DF07 - CAN-L, low speed network. Faulty signal
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:
5 ModelleC30 (2007–2013), C30 Electric (2011–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Modelle nach Baujahr und Motor anzeigen (5)
Was bedeutet der Fehlercode?
The CEM finds two wires joined together on the low speed network, and the signals become faulty. Communication between the control modules is disturbed, and the gauges, instrument lighting and remote control may stop working. On these cars the fault most often lies in the wiring between the two CAN lines.
Mögliche Ursachen
- Joined wires on the low speed network, so that CAN L and CAN H touch
Was Sie tun können
- 1With the ignition on, check which functions work. If the gauges and remote control are both lost at the same time, the fault is probably in the network
- 2Check the harness for chafing, pinch damage and moisture, especially where the CAN wires lie close together
- 3With a diagnostic tool, read the fault codes from all control modules and see which ones show communication faults
- 4Use a multimeter to check that CAN L and CAN H have no connection to each other
- 5Check the connectors in the network for loose connections and corrosion
- 6Do not replace the CEM for this code until the wiring has been checked
Symptome, die Sie bemerken können3
- No gauges work
- The instrument lighting does not work
- The remote control cannot be used
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.