light AUDI A4 1996 B5 / 1.G AWM Engine Charge Air Syst
Page 3 of 17
21-3
Connection diagram for charge air control
and vacuum pressure control
1 -
Activated charcoal filter (ACF)
2 -
EVAP Canister Purge Regulator valve -
N80-
3 -
Non return valve for ACF
Between ACF container and intake line in
front of exhaust turbocharger Note position (light side/ dark side) as
shown in Fig; arrow faces in direction of
flow
4 -
Air cleaner With Mass Air Flow (MAF) sensor -G70-
Pa
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ge air s
ystem with turbochar
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11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE06.21.1
Page 4 of 17
21-4
5 -
Turbocharger
Check charge pressure Page 21
-8
6 -
Combination valve for secondary air inlet
7 -
Fuel pressure regulator
8 -
To brake servo
9 -
Non-return valve
Between brake servo and intake lineNote position (light side/ dark side) as
shown in Fig; arrow faces in direction of
flow
10 -
Suction jet pump
Pa
ge 4 of 17 Char
ge air s
ystem with turbochar
ger, checkin
g
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE06.21.1
Page 5 of 17
21-5
11 -
Non-return valve
Between brake servo and intake lineNote position (light side/ dark side) as
shown in Fig; arrow faces in direction of
flow
12 -
Vacuum reservoir Location: In front left wheel housing
beneath wheel housing liner
13 -
Secondary Air Injection (AIR) Solenoid
valve -N112- Location: Below intake line
14 -
Crankcase breather
Pa
ge 5 of 17 Char
ge air s
ystem with turbochar
ger, checkin
g
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE06.21.1
Page 6 of 17
21-6
15 -
Non-return valve
Between ACF container and intake lineNote position (light side/ dark side) as
shown in Fig; arrow faces in direction of
flow
16 -
From Leak Detection Pump (LDP) -V144-
17 -
Charge air cooler With Charge Air Pressure sensor -G31-
18 -
Throttle Valve Control Module -J338-
19 -
Recirculating valve for turbocharger -
N249- Location: below intake line
20 -
Intake manifold With Intake Air Temperature (IAT) sensor -
G42-
Pa
ge 6 of 17 Char
ge air s
ystem with turbochar
ger, checkin
g
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE06.21.1