Was bedeutet der Fehlercode CEM-1A5E?

Diagnose und Fehlercodedefinition für CEM-1A5E (Volvo S60 (2001–2009), Volvo S80 (1999–2006), Volvo V70 (2000–2008)). Steuergerätereparatur bei OBD Tuning.

VOLVO

CEM-1A5E - Communication with the steering wheel angle sensor module (SAS). Signal missing

System

Zentralelektronik (CEM)

Volvo-Modelle, für die dieser Fehlercode gilt

Gilt für folgende Modelle:

5 Modelle

S60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)

Modelle nach Baujahr und Motor anzeigen (5)

Was bedeutet der Fehlercode?

The central electronic module (CEM) has lost the link to the steering wheel angle sensor (SAS) and sets this code. The fault lies in the communication, not in the CEM, so the CEM should not be replaced. The SAS sits inside the steering wheel module and measures the angle that the stability system uses, so without its signal the stability function does not work.

Mögliche Ursachen

The SAS is not getting power
The ground wire to the SAS is broken
Contact resistance in the connections
Broken CAN wiring to the SAS
Wrong SAS for this car, for example a used module with different software or hardware
No power or ground reaching the steering wheel module, since the SAS is supplied from it

Was Sie tun können

1With the ignition on, the DSTC lamp in the climate control button row should light.
2Check the SAS fuse. If it has blown, replace it once. If it blows again, use a multimeter to check the wire after it has no contact with ground.
3Check that the connector to the steering wheel module is seated and not corroded. Use a multimeter to check that its ground wire has no break
4With a diagnostic tool, watch the steering angle in live data; it should change evenly lock to lock. Do not work on the steering wheel module yourself
5After the work, DSTC is not activated until the car has reached a certain speed, so road-test the car afterwards

Symptome, die Sie bemerken können4

The anti-spin lamp is lit (model year 2002 and earlier)
The general yellow warning lamp is lit (model year 2003 and later)
The stability function does not work
A message appears in the display

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