21-56
 
    
Notes:  -  Turn turbocharger tester on and select measuring range -I- (absolute 
pressure). 
-  Connect test hose to connection barb -I-.
Hoses must be properly connected and there must be no possibility of 
leaks, otherwise incorrect readings may result. Make sure that the test hose is not pinched at the hood or at the side 
window. By pressing memory button "M" on turbocharger tester, the last test 
value is saved until either memory button "M" is pressed again or the 
turbocharger tester is shut-off. A blinking comma in the display field indicates that a value has been 
saved. An arrow appears in the top left corner of the display field if the 
turbocharger tester battery voltage drops below the permitted 
threshold. Before testing, drive vehicle rapidly for at least 3 km on a road that 
does not require stopping (i.e. traffic lights or similar). A second technician is required because the indicated values must be 
read out while the vehicle is being driven. 
Pa
ge 14 of 42 Char
ge air s
ystem with turbochar
ger 
(en
gine code ATW
)
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
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e=re
pair&id=AUDI.B5.GE02.21.3