VOLVO
CEM-DF07 - CAN-L, low speed network. Faulty signal
System
Sentral elektronikk (CEM)
Volvo-modeller feilkoden gjelder for
Feilkoden har ulik betydning avhengig av modell, årsmodell eller motor. Velg betydningen som gjelder din bil.
Gjelder følgende modeller:
5 modellerC30 (2007–2013), C30 Electric (2011–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Hva betyr feilkoden?
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.
Mulige årsaker
- Joined wires on the low speed network, so that CAN L and CAN H touch
Hva du kan gjøre
- 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
Symptomer du kan merke3
- No gauges work
- The instrument lighting does not work
- The remote control cannot be used
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.