Volkswagen Touareg 2003 Workshop Repair Manual page 134

Touareg 2003 ➤
8-cylinder injection engine - Edition 11.2011
If smoke still escapes from air filter:
– Clamp off hose between fuel system diagnostic pump -V144-
and air filter -arrow-. Also refer to
– Observe air filter. If smoke no longer escapes, shut-off valve
in fuel system diagnostic pump -V144- is leaking. Renew fuel
system diagnostic pump -V144- .
If no smoke escapes from air filter
– Check whether smoke escapes from any fuel system compo‐
nent or hose.
To inspect flanges for fuel pump and fuel filter, open assembly
openings in vehicle interior.
– Renew leaking hoses or components.
After completing work, perform guided function „checking fuel
tank breather system for leaks" using ⇒ Vehicle diagnostic tester.
4.2.1 Overview of activated charcoal filter system
1 - Activated charcoal filter
2 - Location of adapter hose -
KLI 9210/55-2-
❑ For leak detection in fuel
system
3 - Activated charcoal filter sol‐
enoid valve 1 -N80-
4 - Breather line
❑ To intake manifold.
5 - Solenoid valve
❑ For fuel system diag‐
nostic pump -V144-
6 - Vacuum line
❑ To intake manifold.
7 - Air filter
❑ For fuel system diag‐
nostic pump -V144-
8 - Fuel system diagnostic
pump -V144-
9 - Fuel tank
10 - Cap
11 - Activated charcoal filter
solenoid valve 2 -N115-
12 - Pressure retention valve
A - Clamp off in this area
❑ For leak detection in fuel
system
❑ For checking activated
charcoal filter solenoid
valve 1 -N80- .
B - Clamp off in this area
❑ For leak detection in fuel system
❑ For checking activated charcoal filter solenoid valve 2 -N115- .
128
Rep. gr.20 - Fuel supply system
⇒ Item C (page 128)
⇒ Item 7 (page 128) :
.