VOLVO
ICM-U021400 - Lost Communication With Keyless vehicle module. General Failure Information. No sub type information
Układ
Moduł sterowania multimediami (ICM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
9 modeliS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Co oznacza ten kod błędu?
The infotainment control module (ICM) no longer receives replies from the keyless vehicle module (KVM) over the CAN bus. The code is generic and does not say what type of fault it is, only that communication has stopped. The fault can only be detected once the control module's test has started and the conditions are met.
Możliwe przyczyny
- Open circuit in the communication cable
- Communication cable short-circuited to ground
- Communication cable short-circuited to supply voltage
- Contact resistance, oxidation or open circuit in the connections
Co możesz zrobić
- 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 in the communication cable are seated and free from corrosion
- 3Use a multimeter to check that the communication cable has no contact with 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 look for a control module that disturbs communication by sending incorrect messages
Objawy, które możesz zauważyć1
- Locking and unlocking with the central locking does not work
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.