Diagnostic Trouble Code (DTC) Information Mmm-U300055

Condition 

Fig 1: Identifying Multimedia Module (MMM)

Courtesy of VOLVO CARS CORPORATION

The multimedia module (MMM) uses settings from the vehicle configuration file in the central electronic module (CEM).

The diagnostic trouble code (DTC) is stored if the control module detects that:

• Invalid or faulty data obtained from the vehicle configuration file.

The control module's test for the diagnostic trouble code (DTC) starts in the event of:

• Start-up of the control module.

Substitute Value 

• The control module assumes standard configuration.

Possible Source 

• The vehicle's configuration is incorrect.
• The Multimedia module (MMM) is not intended for this vehicle, for example a used control module with different software/hardware has been used.

Fault symptom[s] 

• Navigation; No Functionality
• Traffic information is not displayed/updated