Vehicles Up to 06.03

Connection diagram for boost pressure regulation and vacuum control system - vehicles up to 06.03

1 - Mechanical recirculation valve
2 - Wastegate Bypass Regulator Valve -N75-
3 - Pressure regulator valve for crankshaft housing ventilation
4 - Secondary Air Injection (AIR) Pump Motor -V101-
5 - Air filter
^ with Mass Air Flow (MAF) Sensor -G70-
6 - Check-valve
^ Installation position: Arrow on valve points in direction of flow, as shown in illustration.
7 - to EVAP canister
8 - Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-
9 - Turbocharger
10 - Combination valve for secondary air injection (AIR)
11 - To brake booster
12 - Check-valve
^ Installation position: Arrow on valve points in direction of flow, as shown in illustration.
13 - Check-valve
^ Installation position: Arrow on valve points in direction of flow, as shown in illustration.
14 - Crankshaft housing ventilation
15 - Vacuum reservoir
^ Component location: Under wheel housing liner in front left wheel housing
16 - Check-valve
^ Installation position: Arrow on valve points in direction of flow, as shown in illustration.
17 - Secondary Air Injection (AIR) Solenoid Valve -N112-
^ Component location: Below intake manifold
18 - to Leak detection pump (LDP) -V144-
19 - Check-valve
^ Installation position: Arrow on valve points in direction of flow, as shown in illustration.
20 - Charge air cooler
^ with Charge Air Pressure Sensor -G31-
21 - Recirculating valve for turbocharger - N249-
^ Component location: Below intake manifold
22 - Vacuum diaphragm for boost pressure regulation
^ When the combination valve is opened, the mechanical boost pressure regulation valve in the turbocharger is opened and secondary air is thereby channeled past the turbocharger directly to the catalytic converter