Vehicle With All Wheel Drive

Fuel Supply System (all-wheel Drive) - Vehicles As Of 07.2003


CAUTION:
Before beginning repairs on the electrical system:
- Obtain the anti-theft radio security code.
- Switch the ignition off.
- Disconnect the battery Ground (GND) strap.
- On vehicles equipped with Audi Telematics by OnStar (R), switch-off the emergency (back-up) battery for the Telematic/Telephone Control Module prior to disconnecting vehicle battery.
- After reconnecting vehicle battery, re-code and check operation of anti-theft radio. Also check operation of clock and power windows.
- After reconnecting vehicle battery on vehicles equipped with Audi Telematics by OnStar (R), switch-on the emergency (back-up) battery for the Telematic/Telephone Control Module.


NOTE:
- Secure all hose connections with the correct hose clamps (same as original equipment)
- Hose clip pliers VAG 1921 are recommended when installing spring-type clamps.
- Always replace seals and gaskets when assembling.


Fuel tank with attachments, component overview







1 - Bracket
- For exhaust system
2 - Carrier plate
3 - Fuel supply line
- From fuel filter
- To engine
- Do not kink
- Press release tab on connection piece to disconnect
4 - Ventilation line
- From EVAP canister to Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-
- Do not kink
- Press release tab on connection piece to disconnect
- Clip onto fuel tank
5 - Electrical harness connector
- For Fuel Tank Lock Switch -F314-
6 - 2 Nm
7 - Heat shield
- for fuel filler neck
8 - 23 Nm
- Secures fuel filler neck and ground connection -Item 14-
9 - Overflow hose
10 - Rubber cup
11 - Retaining ring
12 - Seal
- Always replace if damaged
13 - Filler cap
14 - Ground connection
- To eliminate electrostatic charge
- Position / test procedure, see Fig. 1
- Make sure that connector is seated properly and secure wire with fastening bolt for fuel filler neck -Item 8-
- After installation, use an ohmmeter to check the electrical connection between the metal ring on the fuel filler neck and a bare metal part on the body. Specification: approx. 0 Ohm
15 - Ventilation pipe
16 - Ventilation pipe
- From gravity valve to EVAP canister
- To remove, press release ring on EVAP canister
17 - Ventilation pipe
- From EVAP canister to Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-
- To remove, press release ring on EVAP canister
- Clip onto fuel tank
18 - Fuel tank
19 - Spreader clip
20 - 23 Nm
21 - Securing strap
22 - Heat shield
- For fuel tank
23 - 2 Nm
24 - 23 Nm

Fig. 1 Position of ground connection







- Route ground connection as shown in illustration.
- First hook ground connection contact -1- into mounting hole on fuel tank -5- and then press in spacer sleeve -2-.
- Make sure that ground connection connector -4- is properly seated on metal ring -3- on fuel filler neck.


CAUTION:
After installation, use an ohmmeter to check the electrical connection between the metal ring on the fuel filler neck and a bare metal part on the body.
- Specification: approx. 0 Ohm.