VOLVO
ICM-U024100 - Lost Communication With Headlamp Control Module "A". General Failure Information. No sub type information
System
Infotainment (ICM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
9 modellerS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Hva betyr feilkoden?
The control module that sets the code no longer receives information from the headlamp control module (HCM) over the CAN bus. The infotainment control module (ICM) is the one that sets the code. The code is generic and does not say what type of fault it is. Steering-angle-dependent vertical headlamp adjustment is affected when communication stops.
Mulige årsaker
- The cable between the control modules has an open circuit
- The cable is short-circuited to ground
- The cable is short-circuited to supply voltage
- Contact resistance, oxidation or open circuit in the connections
Hva du kan gjøre
- 1Read out fault codes from the CEM (central electronic module). If it has codes for CAN communication, troubleshoot them first, since the CEM monitors the voltage on the CAN lines
- 2Check that the connectors to the headlamp control module (HCM) and to the infotainment control module are seated and free from corrosion
- 3Use a multimeter to check that the cable is not short-circuited to ground or supply voltage, and twist and move the cable while measuring
- 4If a control module has recently been replaced without new software being downloaded, this may be the cause. Have a workshop check this
- 5Have a workshop with diagnostic equipment check whether a control module on the CAN network is sending incorrect messages and disturbing communication
Symptomer du kan merke2
- Steering-angle-dependent vertical headlamp adjustment is incorrect
- Steering-angle-dependent vertical headlamp adjustment does not work
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