Functional description, see BMW Service Technology:

TIS -> Document -> SI Technology -> Enter SBT Number

SBT number:

• 84 06 03053
  

Before reading out the fault code memory, a self-test and system test must be run for each CCC subsystem! -> Control unit functions.
If a fault signal occurs during the self- or system test, proceed with Next / repeat. In the corresponding test modules, these self-tests and system tests are run automatically.

Other important information on the diagnosis of the CCC can be found in the following documents:

• Diagnosis CCC - Self- and system tests
  
• Diagnosis CCC - Tips and Tricks
  
• CCC - navigation
  
• CCC - connected devices