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Note
The fuel system diagnostic pump - V144- is fitted in the rear right
wheel housing behind the wheel housing liner.
– Remove rear right wheel and wheel housing liner.
– Pull off vacuum line -1- from fuel system diagnostic pump -
V144- .
– Connect turbocharger tester - V.A.G 1397A- with T-piece and
hose ∅ 6 mm, between vacuum line -1- and fuel system di‐
agnostic pump - V144- -2-.
– Switch on measuring range I (absolute pressure measure‐
ment).
– Connect vehicle diagnostic tester and start engine.
– On vehicle diagnostic tester, select operating mode Guided
functions .
– Select guided function “Checking tank ventilation system for
leaks”.
– Initiate test.
– Observe display on turbocharger tester - V.A.G 1397A- while
test is running.
• Pressure must pulsate and must remain at or below 0.7 bar
(absolute pressure) 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.
Touareg 2010 ➤ , Touareg 2015 ➤
6-cylinder direct-injection engine (3.6 l engine, 4V) - Edition 12.2019
214 Rep. gr.20 - Fuel supply system
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