Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ICM-U01864A

Condition
The serial number of each control module in the infotainment system is stored in the central electronic module (CEM). The stored numbers are compared with the serial numbers of the control modules at start up. If the numbers do not correspond, that particular control module is blocked and the function is not available. The blocking function for non-approved control modules is designated Infotainment Theft Protection (ITP).
The infotainment control module (ICM) checks whether the audio module (AUD) is in the approved list stored in the central electronic module (CEM).
The diagnostic trouble code (DTC) is stored if the infotainment control module (ICM) registers that the audio module (AUD) is not in the approved list.
The diagnostic trouble code (DTC) can be diagnosed with the ignition on for at least 12 seconds, battery voltage greater than 11 V and Infotainment Theft Protection (ITP) activated.





Substitute value
- None.

Possible source
- Replacement of the Audio module (AUD) invalid according to the valid list stored in the central electronic module (CEM).
- Software not downloaded at replacement of control module.
- Failed or incomplete software download to control module.

Fault symptom[s]
- No sound from loudspeakers