VOLVO
ICM-U018400 - Lost Communication With Audio module. General Failure Information. No sub type information
System
Infotainment Control Module (ICM)
Volvo models this fault code applies to
Applies to the following models:
9 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
What does this fault code mean?
ICM keeps watch on its link with the integrated audio module (IAM). The code is set when that communication is disturbed or the IAM is missing, and the car's audio functions can then fail. Although the code is labelled audio module, it concerns communication with the IAM.
Possible causes
- Internal fault inside the integrated audio module (IAM)
- No integrated audio module (IAM) fitted
- Damaged fuse
- Open circuit in the MOST cable
What you can do
- 1Check that the fuses are intact. Their locations are given in the owner's manual or on the fuse box cover
- 2With a diagnostic tool, read the fault codes in the infotainment system. If codes for a MOST break or for the audio unit are stored, work through those first
- 3Check that the connectors in the MOST network between the audio unit and the infotainment control module are clean and firmly seated
- 4If the fault remains, a workshop may need to check the integrated audio module and the MOST cable
Symptoms you may notice5
- The radio does not work
- The CD player does not work
- The keypad on the centre console does not work
- The audio unit (complete) does not work
- Navigation does not work
General guidance for car owners. Diagnosis on the car can point to a different cause.