ECU AUDI TT 1998 8N / 1.G ATW Engine Additional Signals Workshop Manual
Page 23 of 27
24-172
       If the correct control modules are installed:  
     
-  Check to be sure multi-pin connectors of control 
modules are securely connected. 
      If multi-pin connectors are properly secured:  
     
-  Check CAN bus system
     
Checking a "two-line bus system"  
     
Three or more control modules are 
communicating across a "two-line bus 
system".  
     
-  Analyze DTCs stored in memories of control 
modules. 
     
Note:  
     This analysis will help you locate the cause of the 
line malfunction. 
Pa
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