BEFORE cranking the engine at starting RPM 
(such as compression testing) disable the 
fuel injection and ignition systems: 
     
Disconnect the ignition coil power output 
stage. 
     Disconnect harness connectors from all fuel 
injectors. 
     After the work is completed, erase 
Diagnostic Trouble Code (DTC) memory. 
Pa
ge 2 of 8 Fuel su
pp
ly system, servicin
g guidelines
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE04.20.1