Audi AMB Service Manual page 215

ENGINE 1.8 Liter 4-Cyl. 5V Turbo Engine Mechanical, Engine Code(s): AMB
Pressure relief valve must open at pressure of 1.4 to 1.6 bar.
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21 - TURBOCHARGER, G-CHARGER
CHARGE AIR PRESSURE SYSTEM WITH TURBOCHARGER, CHECKING
Charge air pressure system with turbocharger, checking
NOTE:
Observe rules for cleanliness --> Rules of cleanliness.
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Secure all hose connections with standard hose clamps
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Before performing checks or repair work, make sure that all lines and
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hoses are securely connected and that there are no leaks.
Always replace gaskets, sealing rings and self-locking nuts.
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Safety precautions
Pay attention to the following if testers and measuring instruments have to be used in the course of a test drive:
CAUTION: Always attach testers and measuring instruments to the back seat and
have them operated from there by a second person.
If testers and measuring instruments were to be operated from front
passengers seat, person sitting there could suffer injury in the event of an
accident due to triggering of the front passengers airbag.
Boost pressure regulation and vacuum control system, connection diagram for vehicles up to 06.03
2005 Audi A4 Quattro
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