Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ICM-6C73

Condition




The serial number for 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 any number does not correspond, that particular control module is blocked and the function is not available. The blocking function for non-approved control modules is designated security on MOST.
The infotainment control module (ICM) checks whether the Subwoofer module (SUB) is in the approved list stored in the central electronic module (CEM).
Diagnostic trouble code (DTC) ICM-6C73 is stored if the Infotainment Control Module (ICM) registers that the Subwoofer module (SUB) is not on the approved list.
Diagnostic trouble code (DTC) ICM-6C73 can be detected when the ignition is on for at least 12 seconds and the battery voltage is > 11 V and security on the MOST network is activated.

Substitute value
- None.

Possible source
- Replacing a Subwoofer module (SUB) which is not approved in the list stored in the central electronic module (CEM)
- Software not downloaded when replacing the Subwoofer module (SUB)
- Failed or incomplete software download for the Subwoofer module (SUB).

Fault symptom[s]
- No sound from the Subwoofer module (SUB).