Vacuum and Vapor Hose Diagrams

VACUUM CONNECTIONS:
1 Brake booster
2 EGR valve
3 Vacuum canister
- For intake manifold change-over valve
4 Vacuum booster
5 Intake Manifold
6 Ignition coils
- Ignition coil 1 -N-
- Ignition coil 2 -N128-
- Ignition coil 3 -N158-
7 Combination valves
8 Fuel Pressure regulator
9 Check valve
10 EGR vacuum regulator solenoid valve -N18-
- USA vehicles only
11 Secondary Air Injection (AIR) pump motor
12 Air cleaner
13 Intake manifold change-over valve -N156-
14 EVAP canister purge regulator valve
15 Restrictor
16 Vacuum supply for solenoid valves
17 Vacuum canister
- For intake manifold changeover
18 Air filter
- For fuel system leak detection pump -V144-
- In right rear wheelhousing behind liner
19 Fuel system leak detection pump -V144-
- In right rear wheelhousing behind liner
20 Line to tank
21 EVAP canister purge regulator valve -N115-
- Shut off valve on EVAP canister
22 EVAP canister
- On vehicle floor in spare tire well under the cover
23 Secondary Air Injection (AIR) solenoid valve -N112-
24 Throttle body
25 Noise dampener
26 Vacuum connection
- For A/C and/or Quattro