VOLVO
CEM-U001300 - Medium Speed CAN Communication Bus (+) Low. General Failure Information. No sub type information
System
Sentral elektronikk (CEM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
2 modellerV40 (2013–), V40 Cross Country (2013–)
Vis modeller per årsmodell og motor (2)
Hva betyr feilkoden?
On the V40 the positive wire of the medium speed CAN is shorted to earth, which disturbs communication between the control modules. The instrument lighting, gauges, central locking and climate control can then be affected. The fault most often lies in the wiring where it may have rubbed against the body.
Mulige årsaker
- Short circuit between the positive wire of the medium speed CAN and earth
Hva du kan gjøre
- 1Note which functions have dropped out. Several systems dropping out at once points to a fault in the network
- 2Check the harness for chafing and pinch damage where it may have touched the body
- 3Check the connectors on the network for loose connections and corrosion
- 4With a diagnostic tool, read the fault codes from all control modules and see which ones show communication faults
- 5Use a multimeter to check that the positive wire has no contact with earth or the body along its length
- 6Gently flex the cable with the ignition on and see whether the functions change
Symptomer du kan merke4
- The instrument and button lighting does not work
- Some gauges do not work properly
- The central locking does not work
- The climate control does not work
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.