TT Quattro Roadster L4-1.8L Turbo (AMU) (2002)
Air Flow Meter/Sensor: Vacuum and Vapor Hose Diagrams
Vacuum Diagram
1
-
From fuel tank
2
-
EVAP canister
-
Located below spare tire well in rear of vehicle (lift vehicle, accessible from below)
3
-
Check-valve for EVAP canister
-
Between EVAP canister and intake manifold before turbocharger
-
Installation position (light/dark side): Arrow points in direction of flow, as shown
4
-
Turbocharger
5
-
Pressure unit for boost pressure regulation
6
-
Mechanical recirculation valve
7
-
Brake booster
8
-
Check-valve
-
Between brake booster and intake manifold
-
Installation position (light/dark side): Arrow points in direction of flow, as shown
9
-
Wastegate bypass regulator valve -N75-
10
-
Mass Air Flow (MAF) sensor -G70-
11
-
Air cleaner housing
12
-
Pressure control valve for crankshaft housing ventilation
13
-
Combination valve for secondary air injection (AIR)
14
-
Vacuum reservoir
-
Bolted on at cylinder head
15
-
Charge air cooler
-
With charge air pressure sensor -G31-
16
-
Fuel pressure regulator
17
-
Throttle valve control module -J338-
18
-
Intake manifold
-
With Intake Air Temperature (IAT) sensor -G42-