21-9
      
Turbocharger and charge pressure 
regulating valve, checking
 
     
Safety notes  
      Note the following points if test equipment has to 
be used during a road test:  
     
WARNING! 
     
Test equipment must always be secured on 
the rear seat and operated from there by a 
second person. 
     If test equipment is operated from the front 
passenger seat, the occupant could be 
injured by the passenger's airbag in an 
accident. 
     
Special tools, testers and auxiliary items   
     Turbocharger tester VAG 1397 A
     VAG 1551 Scan Tool or VAG 1552 with cable 
VAG 1551/3 
Pa
ge 9 of 37 Char
ge air s
ystem with turbochar
ger
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
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e=re
pair&id=AUDI.B5.GE05.21.1