Audi Workshop Service and Repair Manuals > A3 Mk2 > Power unit | 4-cylinder TDI engine (2.0 ltr. 4-valve common rail), mechanics | Exhaust turbocharger, G-charger | Turbocharger (vehicles with engine codes CBAA, CBAB, CBBB)

Diagram of vacuum connections

Caution

When routing vacuum lines, make sure they are not kinked, twisted or crushed. Otherwise the engine can stop or fail to start.

1 -	Vacuum unit

q	On turbocharger

q	With position sender for charge pressure positioner -G581-

2 -	Charge pressure control solenoid valve -N75-

3 -	Noise insulation

4 -	Air cleaner housing

5 -	To brake servo

6 -	Connection piece

q	On vacuum pump

7 -	Non-return valve

q	Note installation position

8 -	Exhaust gas recirculation cooler change-over valve -N345-

q	Checking change-over function → Chapter

9 -	Cylinder head cover

10 -	Vacuum unit

q	For change-over function for exhaust gas recirculation cooler

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