Volkswagen Touareg 2003 Workshop Repair Manual page 136

Touareg 2003 ➤
8-cylinder injection engine - Edition 11.2011
♦ Turbocharger tester -V.A.G 1397A-
♦ T piece -251 201 346-
♦ Hose ∅ 6 mm
Note
Fitting location of fuel system diagnosis pump -V144- : in rear right
wheel housing under wheel housing liner.
– Remove rear right wheel and wheel housing liner.
– Remove securing bolts
charcoal filter and lower filter to have better access to vacuum
line.
Caution
Support activated charcoal filter to prevent its hanging down
from hoses and lines. This prevents damages.
– Disconnect vacuum line -1- from fuel system diagnostic pump
-V144- .
– Connect turbocharger tester -V.A.G 1397A- with T-piece and
hose ∅ 6mm, between vacuum line -1- and fuel system diag‐
nostic pump -V144- -2-.
– Switch on measuring range
ment).
– Connect vehicle diagnosis tester and start engine.
– On vehicle diagnosis tester, select operating mode
.
functions
– Select guided function „Checking tank ventilation system for
leaks".
– Observe display on turbocharger tester -V.A.G 1397A- while
test is running.
• Pressure must pulsate and must not exceed 0.700 bar during
test.
– If pressure exceeds 0.7 bar during test, vacuum supply is too
low. Check vacuum line to intake manifold for possible kinks
or blockages.
130
Rep. gr.20 - Fuel supply system
⇒ Item 14 (page 123) of activated
(absolute pressure measure‐
I
Guided