Audi Workshop Service and Repair Manuals > A3 Mk1 > Power unit | 4-cyl TDI®-Engine, Mechanical Components | Exhaust turbocharger, G-charger | Checking charge air system with turbocharger | Hose connection diagram for solenoid valves at bulkhead

4-cyl TDI®-Engine, Mechanical Components

Checking charge air system with turbocharger

Hose connection diagram for solenoid valves at bulkhead



EGR valve -N18 Changeover valve for intake manifold flap -N239 (engine codes ASZ, ATD) or valve 2 for exhaust gas recirculation -N213 (engine code AXR) Boost pressure control solenoid valve -N75 Breather pipe ◆ To air cleaner To the tandem pump



To vacuum reservoir Non-return valve ◆ Note installation position (light side/ dark side) as shown in Fig, arrow faces in direction of flow To mechanical exhaust gas recirculation valve To vacuum unit for intake manifold flap To the vacuum unit for boost pressure control

Audi Workshop Service and Repair Manuals