Diagnostic Trouble Code (DTC) Information Mmm-1020
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Condition
The multimedia module (MMM) checks internal control module components.
The diagnostic trouble code (DTC) is stored if the control module detects that:
- Difference between the written and read data in the control module.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Start-up of the control module.
NOTE:
The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.
Substitute Value
- None.
Possible Source
- Damaged multimedia module (MMM).
Fault symptom[s]
- Navigation; No Functionality