check engine AUDI A4 2000 B5 / 1.G Fuel Supply System Front Wheel Drive 1.8T And 2.8 Workshop Manual

20-11


Fuel filler neck, component overview
(vehicles without ORVR)

Vehicles with front wheel drive and 1.8 ltr. turbo
or 2.8 ltr. engine
1 -
Ground connection
Location Fig. 1
, Page 20
-10
- Ensure tight fit of connector on filler neck
ring
- Connect wiring terminal with mounting
screw for plastic fuel filler neck (item 6
Page 20
-8 )
- After installing, check continuity between
metal ring on fuel filler neck and chassis
Ground. Specified: approx. 0
2 -
Bleed line
To EVAP canister
3 -
Gravity valve To remove valve, unclip upward out of the
filler neck
- Check valve for flow:
Valve vertical: open,

Valve tipped 45 : closed
Pa
ge 6 of 49 Fuel su
pp
ly system, servicin
g (vehicles with front wheel drive and 1.8 ltr. turbo or 2.8 ltr. en
gine
)
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE04.20.2

20-27


Fuel supply unit and sender for fuel gauge
-G, component overview

Vehicles with front wheel drive and 1.8 ltr. turbo
or 2.8 ltr. engine
1 -
Sealing ring
-Replace
Installing: insert (dry) into fuel tank opening
2 -
O-rings
- Always replace.
- Check installation position
3 -
Return line From fuel distributor
- Mark before removal
- Note direction of arrow on connecting
flange
4 -
Supply line To fuel distributor
- Mark before removal
- Note direction of arrow on connecting
flange
Pa
ge 23 of 49 Fuel su
pp
ly system, servicin
g (vehicles with front wheel drive and 1.8 ltr. turbo or 2.8 ltr. en
gine
)
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE04.20.2

20-31

Fuel pump, electrical checking


Vehicles with front wheel drive and 1.8 ltr.
turbo or 2.8 ltr. engine

Required special tools, testing equipment
and auxiliary equipment

VAG1348/3A Remote control using
VAG1348/3-2 adaptor cable
Fluke 83 multimeter
VW 1594 Adaptor kit
Pa
ge 27 of 49 Fuel su
pp
ly system, servicin
g (vehicles with front wheel drive and 1.8 ltr. turbo or 2.8 ltr. en
gine
)
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE04.20.2

20-36

Fuel pump delivery volume, checking


Vehicles with front wheel drive and 1.8 ltr.
turbo or 2.8 ltr. engine

Required special tools, testing equipment
and auxiliary equipment

VAG1348/3A Remote control using
VAG1348/3-2 adaptor cable
Calibrated measuring container

Checking requirements
Battery Voltage: 12 Volts minimum
Fuel filter OK
Ignition switched OFF.
Pa
ge 32 of 49 Fuel su
pp
ly system, servicin
g (vehicles with front wheel drive and 1.8 ltr. turbo or 2.8 ltr. en
gine
)
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE04.20.2

20-48

Sender for fuel gauge -G, checking


Vehicles with front wheel drive and 1.8 ltr.
turbo or 2.8 ltr. engine

Note:
Checking signal between sender for fuel gauge -
G and fuel gauge.

Repair Manual, Electrical Equipment, Repair
Group 90


Required special tools, testing equipment
and auxiliary equipment

Fluke 83 Multimeter
VW 1594 Adaptor kit

- Remove connector flange cover under luggage
compartment trim.

- Unlatch and disconnect 4-pin harness connector -1-.
Pa
ge 44 of 49 Fuel su
pp
ly system, servicin
g (vehicles with front wheel drive and 1.8 ltr. turbo or 2.8 ltr. en
gine
)
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE04.20.2