21-47
Test sequence
If recirculation valve does not open or close or valve plate does not seal
correctly when valve is closed: - Attach VAG1390 vacuum pump to recirculation valve.
- Operate vacuum pump.
Recirculation valve must open (arrow)
- After approx. 30 seconds, operate vent valve on vacuum pump.
Recirculation valve must close (arrow)
- Replace recirculation valve. Secure connections of recirculation valve
using screw type clamps.
Pa
ge 2 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
yp
e=re
pair&id=AUDI.B5.GE02.21.3
