Audi TT 2000 - 2005 1.8 Liter 4-Cyl. 5V Turbo Generic Scan …

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Page 1 of 2. Deceleration shut-off valve, checking. 9/12/2006. http://ebahn.bentleypublishers.com/AUDI/A/A3/Repair%20Manuals/FU04/AUDI-TT-FU0. …

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Content
Audi > TT > 2000 - 2005
1.8 Liter 4-Cyl. 5V Turbo Generic Scan Tool Engine Code(s): AMU, BEA,
ATC, AWP
21 - Turbocharger, G-Charger
Deceleration shut-off valve, checking
Recommended special tools and equipment e.g.:
VAG1390 hand vacuum pump
Test requirement
.. Performance deficiency or tip-in shocks
Test sequence
Note:
The deceleration shut-off valve is located in front of the turbocharger. It is opened by
vacuum during deceleration and at idle.
Deceleration shut-off valve, checking Page 1 of 2
http://ebahn.bentleypublishers.com/AUDI/A/A3/Repair%20Manuals/FU04/AUDI-TT-FU0… 9/12/2006Attach 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)
If recirculation valve does not open or close or valve plate does not seal correctly when
valve is closed:
Replace recirculation valve. Secure connections of recirculation valve using screw
clamps.
Deceleration shut-off valve, checking Page 2 of 2
http://ebahn.bentleypublishers.com/AUDI/A/A3/Repair%20Manuals/FU04/AUDI-TT-FU0… 9/12/2006…