Pro
te
c
t
ed
b
y
co
p
y
rig
h
t.
C
o
p
y
in
g
fo
r
pr
iv
a
t
e
o
r
c
o
m
m
e
r
c
ia
l
p
u
rp
o
s
e
s
,
i
n
p
a
rt
o
r i
n
w
h
o
le
,
is
n
o
t
p
e
r
m
it
t
e
d
u
n
l
e
s
s
a
ut
ho
r
i
s
ed
b
y
V
olk
sw
a
ge
n AG
.
V
olk
s
w
a
g
en
AG do
es
n
ot g
uar
ante
e
or a
c
c
ep
t
a
ny
li
a
b
i
li
t
y
w
ith
r
e
s
p
e
c
t
t
o
th
e
c
o
rr
e
c
t
n
e
s
s
o
f
in
fo
r
m
a
tio
n
in
th
is
d
o
c
um
en
t.
C
o
py
rig
ht b
y
V
olk
sw
a
ge
n
A
G.
– Connect vacuum tester - V.A.G 1368- at connection -A- to
breather line of activated charcoal filter using adapters -
V.A.G 1318/12- , -V.A.G 1318/13- and -V.A.G 1318/17- .
– Connect hand vacuum pump - V.A.G 1390- to connection
-B-.
– Set vacuum tester to position “A/B”.
– Operate hand vacuum pump - V.A.G 1390- several times.
Vacuum must not build up.
If no vacuum builds up, but nevertheless a fault in the activated
charcoal filter system is suspected
– Disconnect breather line -1- (to solenoid valve in engine com‐
partment) on activated charcoal filter.
– Connect adapter - V.A.G 1318/17- to line leading to solenoid
valve and seal it.
– Operate hand vacuum pump - V.A.G 1390- several times. A
vacuum must build up.
If vacuum does not build up:
– Check breather lines and couplings for interruptions or sepa‐
rated couplings
⇒ page 148
.
If vacuum builds up, the breather lines are OK. If there is still rea‐
son to believe that there is a fault in the activated charcoal system
– Check breather line to wheel housing.
– Check pressure retention valve
⇒ page 126
.
If vacuum builds up:
– Disconnect breather line -3- (to solenoid valve in engine com‐
partment) on fuel filter.
– Operate hand vacuum pump - V.A.G 1390- several times.
Vacuum must not build up.
If vacuum builds up:
– Check breather line for blockage.
If vacuum does not build up:
– Reconnect breather line on fuel filter.
– Disconnect breather line -1- (to solenoid valve in engine com‐
partment) on activated charcoal filter.
– Operate hand vacuum pump - V.A.G 1390- several times.
Vacuum must not build up.
If vacuum builds up:
– Check breather line for blockage.
If vacuum does not build up:
Phaeton 2003 ➤
6-cylinder injection engine - Edition 02.2014
2. Activated charcoal filter system
151