Page 60 of 65
20-180
EVAP system leak detection circuit,
schematic diagram (vehicles with 2.8 ltr.
engine)
Repair Manual, 2.8 Liter V6 5V Fuel Injection &
Ignition, Repair Group 24 1 -
Throttle actuator control module -J338-
2 -
EVAP canister purge regulator valve -N80-Location: in engine compartmentChecking:
3 -
Bleed line
From EVAP canister to EVAP canister
purge regulator valve -N80-
LocationOn right side under floor panVehicles with front-wheel drive: mounted
on floor pan in area of fuel tank Vehicles with all-wheel drive: mounted on
fuel tank
Pa
ge 60 of 65 EVAP s
ystem, servicin
g
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE04.20.5
Page 61 of 65
20-181
4 -
Bleed line
To gravity valve on fuel tank
5 -
EVAP canister Location: in bottom of spare tire well
6 -
Connecting hose LDP / EVAP canisterPressure side
7 -
Air filter For LDP
8 -
LDP -V144 Location: in left rear wheel house behind
wheel well Page 20
-130
9 -
Vacuum hose
LDP / throttle actuator control module
10 -
T - piece Location Fig. 1
Pa
ge 61 of 65 EVAP s
ystem, servicin
g
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE04.20.5
Page 64 of 65
20-184
5 -
Vent valve
To gravity valve at fuel tank
6 -
Evaporative Emission (EVAP) canister Location: At bottom of spare tire well
7 -
Connecting hose Leak Detection Pump (LDP) /EVAP
canister Pressure side
8 -
Air cleaner For Leak Detection Pump (LDP) -V144-
9 -
Leak Detection Pump (LDP) -V144- Location: In left rear wheel well under
wheel well liner Removing and installing Page 20
-162
10 -
Vacuum line
To Leak Detection Pump (LDP) -V144-
Pa
ge 64 of 65 EVAP s
ystem, servicin
g
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE04.20.5
Page 65 of 65
20-185
11 -
Vacuum reservoir
For Leak Detection Pump (LDP) -V144-Location: in left front wheel well
12 -
Check valve Installation position: Arrow at housing
indicates flow-through direction.
13 -
To intake manifold at top rear
14 -
To intake manifold at top
15 -
Check valve Installation position: Arrow at housing
indicates flow-through direction.
Pa
ge 65 of 65 EVAP s
ystem, servicin
g
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE04.20.5
