Was bedeutet der Fehlercode CEM-DE52?

Diagnose und Fehlercodedefinition für CEM-DE52 (Volvo C30 (2007–2013), Volvo C30 Electric (2011–2013), Volvo C70 (2006–2013)). Steuergerätereparatur bei OBD Tuning.

VOLVO

CEM-DE52 - Communication with the Accessory Electronic Module (AEM). Signal missing

System

Zentralelektronik (CEM)

Volvo-Modelle, für die dieser Fehlercode gilt

Gilt für folgende Modelle:

5 Modelle

C30 (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 has lost contact with the accessory electronic module (AEM), so accessories controlled by the module do not work. The fault is set when communication on the low speed network breaks down. It is most often a matter of supply, earth or a connector at the AEM.

Mögliche Ursachen

No supply to the AEM
Open circuit in the earth wire to the AEM
Contact resistance in the connections
Open circuit in the LS-CAN wires to the AEM
The AEM does not suit the car, for example a used module with other software or hardware

Was Sie tun können

1Try the accessories connected to the module, for example the luggage compartment power socket, and note which ones do not work
2Check the AEM fuse in the engine bay fuse box and the luggage compartment socket fuse in the CEM. If one has blown, check its circuit for a short to earth
3Use a multimeter to check that the wire between the AEM and the earth point has no break and is not shorted to earth or supply voltage
4Check the AEM earth point for loose contact and oxidation
5With a diagnostic tool, read the AEM ID. If it reads, the CAN communication is probably fine and the fault may be intermittent
6The CEM should not be replaced until the communication with the AEM has been checked

Symptome, die Sie bemerken können1

Accessories connected to the module do not work

Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.