VOLVO
CEM-1A67 - Communication with HCM control module Signal missing
System
Sentral elektronikk (CEM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
4 modellerS60 (2001–2009), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Vis modeller per årsmodell og motor (4)
Hva betyr feilkoden?
The central electronic module (CEM) has lost communication with the headlight control module (HCM) and sets this code. The fault lies in the communication, not in the CEM, so the CEM should not be replaced. The active bi-xenon function, which adjusts the sideways aim of the headlights, does not work.
Mulige årsaker
- The HCM is not getting power
- The ground wire to the HCM is broken
- Contact resistance in the connections
- Broken CAN wiring to the HCM
- Wrong HCM for this car, for example a used module with different software or hardware
Hva du kan gjøre
- 1Check the HCM 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.
- 2Check that the connectors to the HCM are seated and not corroded, and that the ground point is clean. Use a multimeter to check the ground wire has no break
- 3If the fault remains, use a multimeter to check the supply and ground wires to the HCM for breaks
- 4After the work, clear the code and check that the headlight side adjustment works
Symptomer du kan merke1
- Headlight levelling from side to side does not work
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