Checking Communication With The Audio Module (AUM)

HINT: The CAN communication with the control module is probably OK if the control module ID can be read off. The fault is probably intermittent and may therefore be difficult to locate. 

Fig 1: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

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• Try to communicate with the audio module (AUM) by reading off the control module ID
• Use the VCT2000 (or appropriate scan tool)

• Continue 

  Refer to SIGNAL MISSING