Fuel Supply System - Engine Code(s): Cala & Caua (coupe) (as of 04.2008) Audi A5 I

SAFETY PRECAUTIONS

Note the following when working on the fuel system

For procedures before opening high pressure fuel injection system, refer to [For engine(s) CALA] General Information or to [For engine(s) CAUA] General Information .

Carry out the following measures before starting work on the fuel supply

1. Disconnect battery. Refer to «Removal and Installation»(/audi/a5/i-2007-2011/remont/charging-system/#battery-starter-generator-cruise-control-coupe) .
2. Open fuel filler door briefly and then close again.

If it is necessary to use testing and measuring devices on road tests, observe the following

Note the following when removing and installing components from a filled or partially filled fuel tank

1. The fuel tank may only be partially full. How much fuel can remain in the fuel tank may be read in the respective work description. Empty the fuel tank, if necessary. Refer to «FUEL TANK DRAINING»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008__fuel-tank-draining) .
2. Before starting work, switch on exhaust extraction system and place an extraction hose close to the installation opening of fuel tank to extract escaping fuel fumes. If no exhaust extraction system is available, a radial fan (as long as motor is not in air flow) with a displacement greater than 15 m 3 /h can be used.
3. Prevent fuel from contacting skin! Wear fuel-resistant gloves!

Note the following when removing and installing the fuel tank

1. Fuel tank must be empty for weight reasons. Empty the fuel tank. Refer to «FUEL TANK DRAINING»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008__fuel-tank-draining) .

CLEAN WORKING CONDITIONS

Even a little contamination can lead to faults. When working on the fuel supply and fuel injection system, observe the following guidelines for a clean working environment

1. Thoroughly clean all connections and the surrounding area before disconnecting.
2. Immediately seal off lines and connections with clean plugs or protective caps.
3. Place parts that have been removed on a clean surface and cover them. Use lint-free cloths.
4. Carefully cover over opened components or seal, if repairs are not performed immediately.
5. Only install clean components: Only unpack replacement parts immediately prior to installation. Do not use parts that have been stored outside of their original packaging (e.g. in tool boxes etc.).
6. When the system is open: Do not work with compressed air. Do not move vehicle unless absolutely necessary.
7. Protect disconnected electrical connectors from dirt and moisture and only connect if dry.

TEST CONDITIONS

1. Battery voltage at least 12.5 V.
2. Fuse for fuel pump OK. Refer to Wiring Diagram.
3. Fuel pump control module OK; for checking, refer to «FUEL PUMP CONTROL MODULE, CHECKING»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008__fuel-pump-control-module-checking) .
4. Fuel pump relay OK. Refer to Wiring Diagram.
5. Fuel tank minimum 1 / 4 full.
6. Fuel filter OK.
7. Fuel lines OK (not plugged, not kinked).
8. Ignition switched OFF.

CONTACT CORROSION

Note. Only original replacement parts are recommended. They are checked and compatible with aluminum. Audi accessories are recommended. Damage due to contact corrosion is not covered by warranty.

Contact corrosion can occur if incorrect fasteners (bolts, nuts, washers, etc.) are used.

For this reason, only install connecting elements that are treated with a special coating.

Also, rubber or plastic parts and adhesive consist of non-conductive materials.

If there are doubts about the suitability of parts, use new parts.

FUEL TANK DRAINING

Special tools and workshop equipment required

1. Fuel siphoning unit VAS 5190

Work procedure

Observe safety precautions. Refer to SAFETY PRECAUTIONS .

Observe rules for cleanliness. Refer to CLEAN WORKING CONDITIONS .

Disconnect battery. Refer to Removal and Installation .

Remove cone piece -2- from shaft piece -1- on fuel extracting unit VAS 5190.

Scheme 1

Attach insulating tape -arrow- to hose at a distance -a- = 1, 300 mm from end of suction hose.

Remove cover from fuel filler tube.

Install shaft piece -1- for fuel extracting unit VAS 5190 on fuel filler tube.

Scheme 2

Slide suction hose into fuel tank far enough so mark applied earlier -arrow- is aligned with shaft piece.

Empty fuel tank through fuel filler tube.

Remove extracting hose carefully.

Note. Proceed the same way if the extracting unit available does not have a shaft piece. In this case, apply a mark -arrow- using insulating tape on hose at length -a- = 1, 235 mm from end of suction hose -1-. The suction hose is inserted correctly when the marking applied earlier is opposite the fuel filler tube lip. Coat hose with a thin layer of engine oil if it is difficult to insert. Never use lubricants containing silicon.

Scheme 3

1. Fuel Line To disconnect, press release button on connection piece
2. O-Ring Replace
3. Locking Flange
4. Fuel Delivery Unit
5. Fuel Filter Removing and installing «FUEL FILTER»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008)
6. Ground Wire Connect to retaining plate
7. Fuel Pressure Regulator Retaining Plate With ground connection

Scheme 4

1. Leak Detection Pump Component location: Left rear on vehicle underbody under cover Check in Guided Fault-Finding operating mode Removing and installing, refer to «LEAK DETECTION PUMP»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008)
2. Clamp Must be appropriate for model type.
3. Ventilation Line
4. Bolt 4 Nm
5. Bolt 16 Nm
6. Rubber Grommet
7. Bushing
8. EVAP Canister Component location: Bottom of spare wheel well Removing and installing, refer to «EVAP CANISTER»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008__evap-canister)
9. Vent Line To the locking flange on fuel tank To disconnect, press release button on connection piece
10. Vent Line to EVAP canister purge regulator valve To disconnect, press release button on connection piece
11. Gasket
12. Vacuum Line To engine

Scheme 5

1. Accelerator Pedal Module With throttle position sensor and accelerator pedal position sensor 2 Removing and installing, refer to «ACCELERATOR PEDAL MODULE WITH THROTTLE POSITION SENSORS»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008)
2. Pedal Bracket
3. Bolt 8 Nm
4. Electrical Harness Connector

Scheme 6

1. Bolt For tightening specifications, refer to «[For engine(s) CAUA] Specifications»(ref-520111-S15783455452012123100000) or to «[For engine(s) CALA] Specifications»(/audi/a5/i-2007-2011/remont/exhaust/#32l-exhaust-system-emission-controls-engine-codes-cala-coupe-as-of-122008).
2. Exhaust System Mounts
3. Securing Strap
4. Fuel Line From fuel filter to engine Do not kink Clipped in at fuel tank To disconnect, press release button on connection piece
5. Bolt 8 Nm
6. Protective Plate For fuel delivery connection
7. Overflow Hose Engaged on bumper bracket
8. Rubber Gasket
9. Cap Turn until it engages audibly Attached to tank flap unit with fastening device
10. Bolt For securing fuel filler neck For discharging electrostatic charge (Scheme 9) 20 Nm
11. Fuel Tank Removing and installing, refer to «FUEL TANK WITH ATTACHMENTS»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008__fuel-tank-with-attachments).
12. Vent Line To EVAP canister Do not kink To disconnect, press release button on connection piece Clipped in at fuel tank
13. Fuel Tank Heat Shield
14. Nut 2 Nm
15. Nut 2 Nm
16. Carrier Plate
17. Fuel Tank Heat Shield
18. Nut 2 Nm
19. Bolt 20 Nm
20. Nut 2 Nm
21. Spreader Clip

Scheme 7

Tighten bolts -arrows- to 1.5 Nm.

Scheme 8

Make sure filler tube threaded connections -2- and -4- are free of corrosion so ground connection to body is not affected.

Scheme 9

1. Fuel Delivery Unit Fuel pump electrical checking, refer to «FUEL PUMP, TESTING»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008__fuel-pump-testing) . Removing and installing, refer to «FUEL DELIVERY UNIT»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008__fuel-delivery-unit) . After installing, fuel vehicle with at least 5 liters of fuel Checking residual pressure, refer to «[For engine(s) CALA] Diagnosis and Testing»(/audi/a5/i-2007-2011/remont/fuel-system/#32l-multiport-fuel-injection-engine-codes-cala-coupe) or to «[For engine(s) CAUA] Diagnosis and Testing»(ref-520183-S23709405932012123100000) .
2. Threaded Ring
3. Seal Replace Install dry
4. Union Nut Replace 120 Nm Use a union nut tool T40068 A for loosening and tightening
5. Fuel Line To engine Do not kink To remove from locking flange, press release button on connecting piece Clipped in at fuel tank
6. Electrical Harness Connector For transfer fuel pump and fuel level sensor
7. Electrical harness connector For fuel pump control module
8. Spring nut
9. Fuel Pump Control Module Removing and installing, refer to «FUEL PUMP CONTROL MODULE»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008__fuel-pump-control-module) .
10. Bolt 2.5 Nm
11. Electrical harness connector For fuel level sensor 2
12. Vent line To EVAP canister Do not kink To remove from locking flange, press release button on connecting piece Clipped in at fuel tank
13. Union nut Replace 120 Nm Use a union nut tool T40068 A for loosening and tightening
14. Seal Replace Install dry
15. Threaded Ring
16. Locking Flange With fuel level sensor 2
17. Vent Line To remove from locking flange, press release button on connecting piece Clipped in at fuel tank
18. Vent Line To remove from locking flange, press release button on connecting piece Clipped in at fuel tank
19. Fuel Level Sensor 2 Resistance values and checking, refer to «FUEL LEVEL SENSOR 2, CHECKING»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008__fuel-level-sensor-2-checking) . Removing and installing, refer to «FUEL LEVEL SENSOR 2»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008__fuel-level-sensor-2) . After installing, fuel vehicle with at least 5 liters of fuel
20. Suction Line Removing and installing, refer to «SUCTION LINE»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008) . After installing, fuel vehicle with at least 5 liters of fuel
21. Electrical harness connector For fuel level sensor 2
22. Fuel Level Sensor -G- Resistance values, checking «FUEL LEVEL SENSOR 1, CHECKING»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008__fuel-level-sensor-1-checking) . Removing and installing «FUEL LEVEL SENSOR 1»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008) .

Scheme 10

1. Vent Line From EVAP canister to EVAP canister purge regulator valve Clipped into brackets under vehicle floor
2. Vacuum Line From engine to leak detection pump Clipped into brackets under vehicle floor
3. Vent Line From fuel tank locking flange to EVAP canister Clipped into brackets under vehicle floor
4. Fuel Tank Locking Flange
5. Air Filter Housing For leak detection pump
6. Connecting Line From leak detection pump -V144- to air filter Clipped into brackets under vehicle floor
7. EVAP Canister Component location: Under bottom of luggage compartment Removing and installing, refer to «EVAP CANISTER»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008__evap-canister) .
8. Leak Detection Pump Component location: On EVAP canister under bottom of luggage compartment Check in "Guided Fault-Finding" operating mode Removing and installing, refer to «LEAK DETECTION PUMP»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008) .
9. To Brake Booster
10. EVAP Canister Purge Regulator Valve

FUEL PUMP, CHECKING DELIVERY RATE - ENGINE CODE(S): CALA

Special tools and workshop equipment required

1. Pressure gauge K-Jetronic V.A.G 1318
2. Adapter V.A.G 1318/10-12 and adapter V.A.G 1318/15
3. Remote Control V.A.G 1348/3A with adapter cable V.A.G 1348/3-3
4. Measuring container, fuel-resistant

Work procedure

Proceed as follows

Observe test conditions TEST CONDITIONS .

Remove rear bench seat Removal and Installation .

Remove locking flange cover -arrows-.

Disconnect electrical connector -1- on locking flange.

Scheme 11

Note. Ignore -2-.

Connect remote control for V.A.G 1348 V.A.G 1348/3A using adapter V.A.G 1348/3-3 and cable from connector test set V.A.G 1594C to terminal -1-.

Scheme 12

2. Tape adapter cable connector terminal V.A.G 1348/3-3 with insulating tape -arrow- to prevent a short circuit.

Connect connector terminal -5- to chassis ground (GND) with an adapter cable from connector test kit V.A.G 1594C.

Route VAG 1348 Remote Control V.A.G 1348/3A toward front in engine compartment.

Unclip plenum chamber cover -2- and remove it.

Scheme 13

Note. Ignore -1 and 3- and -arrow-.

Release retainer -arrow A- and open cover -arrow B-.

Scheme 14

Connect alligator clip to battery jump start terminal -U6- -A- in terminal 30 wire junction 2 -TV22- in plenum chamber.

Remove cover from fuel filler tube.

Remove air duct -arrows-.

Scheme 15

Remove vacuum hose -3- from connection on air guide pipe.

Scheme 16

Remove air guide pipe by loosening hose clamp -4- and opening clips -arrows-.

Note. Ignore -1 and 2-.

Disconnect vacuum line -1-.

Scheme 17

Remove air filter housing and, if applicable, disconnect electrical connector -2- on rear side at intake air switch-over valve -N335-.

Remove fuel supply line from high pressure pump -arrow-.

Scheme 18

Connect fuel injection pressure gauge V.A.G 1318 with adapters V.A.G 1318/11 and V.A.G 1318/15 in fuel line.

Scheme 19

Push an assisting hose -arrow- onto it and hold it into a measuring container.

Open pressure gauge shut-off valve.

1. The lever points in direction of flow.

Generate pressure in fuel system by pressing switch on remote control and slowly closing shut-off valve on pressure gauge.

1. Specified value: 4 bar positive pressure.

From this point on do not move position of shut-off tap.

Empty measuring container.

Press remote control switch for 15 seconds.

Compare quantity of fuel delivered with minimum delivery rate in diagram (cm 3 /15 s).

Scheme 20

Note. Voltage at fuel pump with engine stopped and pump running is approximate 2 volts less than battery voltage.

If minimum delivery quantity is not obtained, the following malfunctions may be present

1. Fuel lines pinched.
2. Fuel filter clogged.
3. Fuel pump faulty.

Assembly is in reverse order of removal, note the following

Note. Secure all hose connections with hose clamps appropriate for the model .

Install right locking flange cover.

Install rear bench seat Removal and Installation .

Install air filter housing Removal and Installation .

Scheme 21

1. Vacuum line From engine to Leak Detection Pump (LDP) -V144- Clipped into brackets under vehicle floor
2. Vent line From fuel tank locking flange to EVAP canister Clipped into brackets under bottom of luggage compartment
3. Fuel tank locking flange
4. Air filter housing For Leak detection pump (LDP) -V144
5. Connecting line From Leak Detection Pump (LDP) -V144- to EVAP canister Clipped into brackets under vehicle floor
6. EVAP canister Component location: Under bottom of luggage compartment Removing and installing «EVAP CANISTER»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008__evap-canister)
7. Leak detection pump (LDP) -V144- Component location: On EVAP canister under bottom of luggage compartment Check in "Guided Fault-Finding" operating mode Removing and installing «LEAK DETECTION PUMP»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008)
8. Vent line From EVAP canister to Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80- Clipped into brackets under vehicle floor
9. Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80

FUEL PUMP, CHECKING DELIVERY RATE - ENGINE CODE(S): CAUA

Special tools and workshop equipment required

1. Pressure gauge K-Jetronic V.A.G 1318
2. Pressure gauge adapter V.A.G 1318/10-12
3. Remote Control V.A.G 1348/3A with adapter cable V.A.G 1348/3-3
4. Measuring container, fuel-resistant

Work procedure

Proceed as follows

Observe test conditions TEST CONDITIONS .

Remove rear bench seat Removal and Installation .

Remove locking flange cover -arrows-.

Disconnect electrical connector -1- on locking flange.

Note. Ignore -2-.

Connect remote control for V.A.G 1348 V.A.G 1348/3A using adapter V.A.G 1348/3-3 and cable from connector test set V.A.G 1594C to terminal -1-.

2. Tape adapter cable connector terminal V.A.G 1348/3-3 with insulating tape -arrow- to prevent a short circuit.

Connect connector terminal -5- with an adapter cable from connector test kit V.A.G 1594C to chassis ground (GND).

Route VAG 1348 Remote Control V.A.G 1348/3A toward front in engine compartment.

Unclip plenum chamber cover -2- and remove it.

Note. Ignore -1 and 3- and -arrow-.

Release retainer -arrow A- and open cover -arrow B-.

Connect alligator clip to battery jump start terminal -U6- -A- in terminal 30 wire junction 2 -TV22- in plenum chamber.

Remove cover from fuel filler tube.

Remove engine cover -arrows-.

Scheme 22

Disconnect fuel line -arrow-.

Scheme 23

Connect fuel injection pressure gauge V.A.G 1318 with adapters V.A.G 1318/11 and V.A.G 1318/12 in fuel line.

Scheme 24

Push an assisting hose -arrow- onto it and hold it into a measuring container.

Open pressure gauge shut-off valve.

1. The lever points in direction of flow.

Generate pressure in fuel system by pressing switch on remote control and slowly closing shut-off valve on pressure gauge.

1. Specified value: 4 bar positive pressure.

From this point on do not move position of shut-off tap.

Empty measuring container.

Press remote control switch for 15 seconds.

Compare quantity of fuel delivered with minimum delivery rate in diagram (cm 3 /15 s).

Note. Voltage at fuel pump with engine stopped and pump running is approximate 2 volts less than battery voltage.

If minimum delivery quantity is not obtained, the following malfunctions may be present

1. Fuel lines pinched.
2. Fuel filter clogged.
3. Fuel pump faulty.

Assembly is in reverse order of removal, note the following

Install fuel line on fuel rail Description and Operation .

Install right locking flange cover.

Install rear bench seat Removal and Installation .

FUEL PUMP CONTROL MODULE, CHECKING

1. On vehicles with FSI engine, the fuel pump is supplied with voltage via fuel pump control module -J538-.
2. Fuel pump control module -J538- testing occurs in "Guided Fault Finding" operating mode.

LEAK DETECTION SYSTEM

Function

The leak detection system recognizes leaks in the complete fuel system, including the fuel tank, EVAP canister and Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-.

On the mechanical side, the leak detection system consists mainly of a vacuum-driven diaphragm pump, that is equipped with a reed contact on the actuation rod of the pump diaphragm. The pump is supplied with vacuum via mechanical vacuum pump or engine intake stroke.

1. When leak detection is activated, the diaphragm pump pumps fuel system up to 20 to 30 mbar. The pump diaphragm is then moved out so that the reed contact at the operating rod remains in the "open" position.
2. During leak diagnosis, the reed contact is monitored to check if it remains open within 15 seconds. This indicates the system is sealed.
3. If pressure falls (indicating a leak), the diaphragm moves back and the reed contact closes.
4. If reed contact closes within 15 seconds of leak detection time, a further test is performed: In this case the diaphragm pump pumps 4 times again. The engine control module (ECM) measures the time for each of the 4 pumps until the reed contact is closed again. From that, the control module can recognize a "small leak" (smaller than 1 mm in diameter) or a "large leak".

The leak detection is activated automatically, shortly after each cold engine start (under 35 °C) and a continual drive faster than 10 km/h. In case a fault is detected, a DTC will be stored to memory. The Malfunction Indicator Lamp (MIL) in the instrument cluster lights up if the malfunction is recognized for 2 subsequent starts. Leak diagnosis can also be activated using Vehicle Diagnosis, Testing and Information System VAS 5051B PERFORMING DIAGNOSTIC LEAK TEST .

Note. After the cold start, the leak detection can repeated up to 10 times within the first 20 minutes. It can be determined if an automatic leak diagnosis was recently performed by using the Vehicle Diagnosis, Testing and Information System VAS 5051B in measured value block 071 PERFORMING DIAGNOSTIC LEAK TEST .

PERFORMING DIAGNOSTIC LEAK TEST

Diagnostic leak test occurs in "Guided Fault Finding".

Checking fuel supply and tank ventilation systems for leaks

Note. The following describes individual areas in the fuel supply and ventilation systems where leaks are possible. After repairing a possible leak, perform a leak test to ensure that leak was successfully repaired.

Switch off ignition.

Scheme 25

Check if fuel tank locking cap -arrow- was closed completely during the test.

Check whether seal of fuel filler cap was damaged or crimped. Replace if necessary.

Remove rear bench seat Removal and Installation .

Remove locking flange cover -arrows-.

Note. Observe installation notes for locking flanges, refer to INSTALLING .

Check if sealing rings under locking flanges are OK or if locking rings on locking flange are tightened correctly on the fuel tank. Also check fuel line connections.

Visually check all lines and hose connections on fuel system and replace leaking lines such as

1. Line from EVAP canister to Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80
2. Lines from EVAP canister to Leak Detection Pump (LDP) -V144-.
3. Line from fuel tank to EVAP canister (below heat shield for EVAP canister).
4. Lines for tank ventilation (beneath right rear wheel housing liner).
5. Fuel lines to engine.

Note. Leaks at lines and components of tank system can sometimes be located using a non-flammable, environmentally compliant leak detection spray. For this, initiate leak diagnostic several times in sequence to build up pressure in the system. At leaking areas, bubbles will form.

Perform a visual inspection on fuel system components and tank ventilation system

1. Fuel Tank
2. EVAP canister
3. Leak detection pump (LDP) -V144
4. Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80

Note. Due to the form or function of the components, leaking areas may not always be localized by spraying on leak detection spray. It may be necessary to clamp off the relevant component using Hose Clamps Up to 25 mm dia. 3094 and initiate tank leak detection diagnostic. If the leak is no longer indicated, the component that was clamped off is faulty. If clamped off directly at the leak detection pump and a leak is still indicated, the leak detection pump itself is leaking.

FUEL PUMP, TESTING

Special tools and workshop equipment required

1. Remote control V.A.G 1348/3A with adapter cable V.A.G 1348/3-2
2. Portable multimeter V.A.G 1526C
3. Connector test set V.A.G 1594C

Work procedure

Proceed as follows

Observe test conditions TEST CONDITIONS .

Remove rear bench seat Removal and Installation .

Remove locking flange cover -arrows-.

Disconnect electrical connector -1- on locking flange.

Note. Ignore -2-.

Connect remote control for V.A.G 1348 V.A.G 1348/3A using adapter V.A.G 1348/3-3 and cable from connector test set V.A.G 1594C to terminal -1-.

2. Tape adapter cable connector terminal V.A.G 1348/3-3 with insulating tape -arrow- to prevent a short circuit.

Connect connector terminal -5- with an adapter cable from connector test kit V.A.G 1594C to chassis ground (GND).

Route VAG 1348 Remote Control V.A.G 1348/3A toward front in engine compartment.

Unclip plenum chamber cover -2- and remove it.

Note. Ignore -1 and 3- and -arrow-.

Release retainer -arrow A- and open cover -arrow B-.

Connect alligator clip to battery jump start terminal -U6- -A- in terminal 30 wire junction 2 -TV22- in plenum chamber.

Press button of remote control.

1. Running noise of pump must be audible.

Note. Because the fuel pump runs quietly, avoid ambient noise during the test.

When operating noise is no longer audible, remove fuel delivery unit FUEL DELIVERY UNIT .

Scheme 26

Check electrical wires between locking flange and fuel pump to make sure they are connected and routed correctly.

If no fault is detected in the electrical wires, replace fuel delivery unit.

Install fuel delivery unit while following the information on connecting the battery, refer to INSTALLING .

FUEL LEVEL SENSOR 1, CHECKING

Special tools and workshop equipment required

1. Portable multimeter V.A.G 1526C
2. Connector test set V.A.G 1594C

Work procedure

Proceed as follows

Remove rear bench seat Removal and Installation .

Remove locking flange cover -arrows-.

Disconnect electrical connector -1- on locking flange.

Note. Ignore -2-.

Connect multimeter to measure resistance between terminals -3- and -4-.

Scheme 27

Fuel Level Sensor -G- installed

1. Sensor at lower stop: approximately 270 ohms.
2. Sensor at upper stop: approximately 70 ohms.

Note. If measured value is 0 ohms there is a short circuit. If measured value is infinity ohms there is and open circuit in the wiring. To check resistance values "tank full" or "tank empty", the fuel delivery unit must be removed FUEL DELIVERY UNIT and the sensor floater must be placed in upper or lower end position. With fuel level sensor removed, the following values are obtained because of the greater deflection of the floater arm

Fuel Level Sensor -G- removed

1. Sensor at lower stop: approximately 288 ohms.
2. Sensor at upper stop: approximately 57 ohms.

Connect multimeter to measure resistance between contacts -3- and -4-.

Fuel Level Sensor -G- installed or removed

1. Arbitrary sensor position: approximately 340 ohms.

Assembly is in reverse order of removal, note the following

Install right locking flange cover.

Install rear bench seat Removal and Installation .

FUEL LEVEL SENSOR 2, CHECKING

Special tools and workshop equipment required

1. Portable multimeter V.A.G 1526C
2. Connector test set V.A.G 1594C

Work procedure

Proceed as follows

Remove rear bench seat Removal and Installation .

Remove locking flange cover -arrows-.

Disconnect electrical connectors -1- and -2- on locking flange.

Connect multimeter for resistance measurement between terminal -1- on connector -A- and terminal -3- on connector -B-.

Scheme 28

Fuel Level Sensor 2 -G169- installed

1. Sensor at lower stop: approximately 270 ohms.
2. Sensor at lower stop: approximately 70 ohms.

Note. If measured value is 0 ohms there is a short circuit. If measured value is infinity ohms there is and open circuit in the wiring. To check resistance values "tank full" or "tank empty", the Fuel Level Sensor 2 -G169- must be removed FUEL LEVEL SENSOR 2 and the sensor floater must be placed in upper or lower end position. With fuel level sensor removed, the following values are obtained because of the greater deflection of the floater arm

Fuel Level Sensor 2 -G169- removed

1. Sensor at lower stop: approximately 290 ohms.
2. Sensor at lower stop: approximately 16 ohms.

Connect multimeter between terminals -1- and -2- on connector -A- to measure resistance.

Fuel Level Sensor 2 -G169- installed or removed

1. Arbitrary sensor position: approximately 340 ohms.

Assembly is in reverse order of removal, note the following

Install right locking flange cover.

Install rear bench seat Removal and Installation .

REMOVING

Proceed as follows

Observe safety precautions SAFETY PRECAUTIONS .

Observe rules for cleanliness CLEAN WORKING CONDITIONS .

Remove fuel delivery unit FUEL DELIVERY UNIT .

Disconnect ground (GND) connection -arrow- on fuel pressure regulator retaining plate.

Scheme 29

Remove fuel line -1- by pressing release button.

Scheme 30

Disconnect electrical connector -6- for fuel level sensor G.

Disconnect fuel pump electrical connector at fuel pump.

Remove locking flange -4- with fuel filter upward out of fuel delivery unit -3-.

Release a total of 3 retaining tabs -5- by sliding 3 release bars -7- (with fuel filter parts set) -arrow-.

Pull fuel filter -2- down out of locking flange.

INSTALLING

Installation is in reverse order of removal, note the following

Note. Replace O-ring.

Insert fuel filter into guides on locking flange and press it in until it engages.

Note. The fuel filter can only be inserted in one position.

Install fuel delivery unit, refer to INSTALLING .

EVAP CANISTER

Note. Checking for leaks PERFORMING DIAGNOSTIC LEAK TEST .

Proceed as follows

Observe safety precautions SAFETY PRECAUTIONS .

Observe rules for cleanliness CLEAN WORKING CONDITIONS .

Remove left rear underbody cover Description and Operation .

Disconnect electrical connector -6-.

Scheme 31

Remove air line -5-.

Remove vent line -7-.

Disconnect vent line -9- to evaporative emission (EVAP) canister purge regulator valve -N80- by pressing release button.

Disconnect vent line -2- to fuel tank by pressing release button.

Remove bolts -1, 4 and 8- and remove EVAP canister -3-.

1. Tightening specifications «EVAP CANISTER AND LEAK DETECTION SYSTEM ASSEMBLY OVERVIEW»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008) .

Installation is in reverse order of removal, note the following

Connect air and vent lines until they engage audibly.

Remove EVAP canister EVAP CANISTER .

Free up electrical connector -2-.

Scheme 32

Remove bolts -3-.

Pull diagnostic pump -1- out of EVAP canister and remove it.

1. Tightening specifications «EVAP CANISTER AND LEAK DETECTION SYSTEM ASSEMBLY OVERVIEW»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008) .

Installation is in reverse order of removal, note the following

Install EVAP canister EVAP CANISTER .

Proceed as follows

Remove driver side lower instrument panel cover Removal and Installation .

Disconnect electrical connector -2- by pressing release -1- up -arrow-.

Scheme 33

Remove bolt -3- and remove accelerator pedal module downward.

1. Tightening specifications «ACCELERATOR PEDAL MODULE ASSEMBLY OVERVIEW»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008) .

Installation is in reverse order of removal, note the following

Engage accelerator pedal module -4- on bottom of pedal bracket -1-, insert centering pin -2- and tighten bolt -3-.

Scheme 34

Install driver side lower instrument panel cover Removal and Installation .

FUEL TANK WITH ATTACHMENTS

Special tools and workshop equipment required

1. Engine/transmission jack V.A.G 1383 A

Proceed as follows

Observe safety precautions SAFETY PRECAUTIONS .

Observe rules for cleanliness CLEAN WORKING CONDITIONS .

Disconnect battery Removal and Installation .

Battery

Fuel tank, emptying FUEL TANK DRAINING .

Remove rear bench seat Removal and Installation .

Remove locking flange cover -arrows-.

Disconnect electrical connectors -1- and -2- on locking flange.

Open tank door.

Clean area around fuel filler tube.

Remove locking cap -arrow- from fuel filler tube.

Note. To prevent dirt from entering fuel tank, seal opening with a clean foam piece.

Remove right rear wheel.

Remove right rear wheel housing liner Description and Operation .

Remove fuel filler tube bolts -1- and -2-.

Remove rear part of exhaust system [For engine(s) CAUA] Removal and Installation or to [For engine(s) CALA] Removal and Installation .

Remove rear axle Description and Operation .

Disconnect fuel line -1- on right front of fuel tank by pressing release button.

Scheme 35

Disconnect vent line -1- on left of EVAP canister by pressing release button.

Scheme 36

Place engine/transmission jack V.A.G 1383 A under fuel tank for support.

Scheme 37

Support fuel tank using engine/transmission jack V.A.G 1383 A.

Remove bolts -1 through 5- and remove exhaust system bracket -6-.

Scheme 38

Lower fuel tank with Engine/Transmission jack V.A.G 1383 A while guiding it by hand.

1. Tightening specifications «FUEL TANK WITH ATTACHMENTS ASSEMBLY OVERVIEW»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008) .

Installation is in reverse order of removal, note the following

Make sure fuel and vent lines are clipped to fuel tank properly.

Position fuel tank with mounting strap and carrier plate on vehicle underbody using engine/transmission jack V.A.G 1383 A.

Make sure fuel tank is positioned so that the filler tube can be guided into opening of the body correctly.

Install exhaust system bracket -6- and tighten mounting strap and carrier plate bolts -1 through 5-.

Make sure filler tube threaded connections -1- and -2- are free of corrosion so ground (GND) connection to body is not affected.

Tighten fuel filler tube bolts -1- and -2-.

Install rear axle Description and Operation .

Install rear part of exhaust system [For engine(s) CAUA] Removal and Installation or to [For engine(s) CALA] Removal and Installation .

Install right rear wheel housing liner Description and Operation .

Install right locking flange cover (Scheme 8)

Install rear bench seat Removal and Installation .

Connect battery and observe safety precautions after connecting battery Removal and Installation .

FUEL PUMP CONTROL MODULE

Special tools and workshop equipment required

1. Union nut tool T40068 A

Proceed as follows

Observe safety precautions SAFETY PRECAUTIONS .

Observe rules for cleanliness CLEAN WORKING CONDITIONS .

Empty fuel tank if necessary FUEL TANK DRAINING .

Move passenger seat all the way forward if necessary.

Disconnect battery Removal and Installation .

Remove rear bench seat Removal and Installation .

Remove locking flange cover -arrows-.

Disconnect electrical connectors -1- and -2- on locking flange.

Scheme 39

If necessary, disengage electrical connector -3- to auxiliary heater metering pump at locking flange and lay it aside.

Disconnect fuel line -2- at locking flange by pressing release button.

Scheme 40

If necessary, disconnect the fuel line -1- to the auxiliary heater metering pump at locking flange by pressing release button.

Use a union nut tool T40068 A to remove union nut -arrow-.

Scheme 41

Note. The plastic catch on the threaded ring breaks off when the union nut is loosened.

Cover fuel tank opening with a clean cardboard box -1- to prevent dirt from falling into it.

Scheme 42

Remove bolts -arrows-.

Pull fuel pump control module -J538- -1- in between fuel tank and vehicle underbody.

Scheme 43

Disconnect electrical connector and remove fuel pump control module.

1. Tightening specifications «FUEL DELIVERY UNIT AND FUEL LEVEL SENSOR ASSEMBLY OVERVIEW»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008) .

Installation is in reverse order of removal, note the following

Note. Replace sealing ring and union nut.

Bring fuel pump control module -J538- into installation position and tighten it.

Place union nut -1- on your left arm and push locking flange -2- forcefully into installation position with your left hand -arrow-.

Scheme 44

1. The tab -4- on locking flange must lie between tabs -3- and -5- on threaded ring.

Slide the union nut -1- off your left arm using your right hand while your left hand keeps holding the locking flange -2- down firmly -arrow-.

Scheme 45

Position union nut -1- with your right hand so the double ridge -5- on ribs is over lug -3- on locking flange (approximately "10 o'clock" position). This makes sure union nut engages at beginning of threads immediately when tightening it -4-.

Press locking flange down firmly with a screwdriver -arrow-.

Turn union nut approximately 480° with your right hand until double ridge -1- is in approximately "2 o'clock position" while keeping locking flange pressed down firmly with your left hand.

Scheme 46

Tighten union nut using a union nut tool T40068 A.

Scheme 47

Scheme 48

1. Verification: The double ridge -1- must now be between "7 and 8 o'clock".

Connect fuel lines -1- and -2-.

Connect electrical connectors.

Install right locking flange cover.

Install rear bench seat Removal and Installation .

Connect battery and observe safety precautions after connecting battery Removal and Installation .

To vent fuel line to auxiliary heater metering pump, run for 10 minutes at wide open throttle (WOT).

FUEL DELIVERY UNIT

Special tools and workshop equipment required

1. Union nut tool T40068 A

Proceed as follows

Observe safety precautions SAFETY PRECAUTIONS .

Observe rules for cleanliness CLEAN WORKING CONDITIONS .

Empty fuel tank if necessary FUEL TANK DRAINING .

Move passenger seat all the way forward if necessary.

Disconnect battery Removal and Installation .

Remove rear bench seat Removal and Installation .

Remove locking flange cover -arrows-.

Disconnect electrical connectors -1- and -2- on locking flange.

If necessary, disengage electrical connector -3- to auxiliary heater metering pump at locking flange and lay it aside.

Disconnect fuel line -2- at locking flange by pressing release button.

If necessary, disconnect fuel line -1- to auxiliary heater metering pump at locking flange by pressing release button.

Use a union nut tool T40068 A to remove union nut -arrow-.

Note. The plastic catch on threaded ring breaks off when union nut is loosened.

Remove locking flange -2- with fuel filter from fuel tank and tip it slightly to left side of vehicle.

Scheme 49

Remove seal -1-.

Pull locking flange with fuel filter away from fuel delivery unit slightly -arrow A-.

At the same time, tilt locking flange with fuel filter out of fuel tank -B arrows-, being especially careful of the retaining plate with ground (GND) connection -3- and the fuel line -4-.

Scheme 50

Pull locking flange -2- with fuel filter away from fuel delivery unit -1- slightly again -arrow A-.

Tilt fuel delivery unit to left side of vehicle -arrow B- and pull it out of fuel tank slightly.

Note. When removing fuel delivery unit, be sure not to bend floater arm on fuel level sensor -G-.

Remove fuel level sensor -G- -3- from fuel tank opening.

Remove suction line -3- by pressing release -1-.

Scheme 51

Disconnect electrical connector -2- for fuel level sensor 2 -G169- by pressing release -arrow-.

Note. The illustration shows the fuel delivery unit with the fuel tank.

1. Tightening specifications «FUEL DELIVERY UNIT AND FUEL LEVEL SENSOR ASSEMBLY OVERVIEW»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008) .

Installation is in reverse order of removal, note the following

Note. Replace sealing ring and union nut. When inserting fuel delivery unit, do not bend floater arm on the fuel level sensor -G-. Make sure the fuel hoses are secure.

Guide suction line -3- out of fuel tank and connect it until it engages audibly.

Connect electrical connector -2- for fuel level sensor 2 -G169-.

Make sure ground (GND) wire -arrow- is connected securely to fuel pressure regulator retaining plate.

Insert fuel level sensor -G- -3- in fuel tank.

Scheme 52

Pull locking flange -2- with fuel filter away from fuel delivery unit -1- slightly again -arrow A-.

Bend fuel delivery unit to left side of vehicle and tilt it into fuel tank -arrow B- while being careful of the fuel level sensor -3-.

Pull locking flange -2- with fuel filter away from fuel delivery unit slightly -arrow A-.

Scheme 53

At the same time, tilt locking flange with fuel filter into fuel tank -B arrows-, being especially careful of retaining plate with ground (GND) connection -3- and fuel line -4-.

Stretch new sealing ring -1- over locking flange and insert it in groove on fuel tank.

Place union nut -1- on your left arm and push locking flange -2- forcefully into installation position with your left hand -arrow-.

1. Tab -4- on locking flange must lie between tabs -3- and -5- on threaded ring.

Slide union nut -1- off your left arm using your right hand while your left hand keeps holding locking flange -2- down firmly -arrow-.

Position union nut -1- with your right hand so double ridge -5- on ribs is over lug -3- on locking flange (approximately "10 o'clock" position). This makes sure union nut engages at beginning of threads immediately when tightening it -4-.

Press locking flange down firmly with a screwdriver -arrow-.

Turn union nut approximately 480° with your right hand until double ridge -1- is in approximately "2 o'clock position" while keeping locking flange pressed down firmly with your left hand.

Tighten union nut using a union nut tool T40068 A.

1. Verification: The double ridge -1- must now be between "7 and 8 o'clock".

Connect fuel lines -1- and -2-.

Connect electrical connectors.

Install right locking flange cover

Install rear bench seat Removal and Installation .

Connect battery and observe safety precautions after connecting battery Removal and Installation .

After installing fuel delivery unit, fill vehicle with at least 5 liters of fuel.

To vent fuel line to auxiliary heater metering pump, run for 10 minutes at wide open throttle (WOT).

Proceed as follows

Observe safety precautions SAFETY PRECAUTIONS .

Observe rules for cleanliness CLEAN WORKING CONDITIONS .

Note. During installation, the cable ties must be re-installed at the same location.

Removing fuel delivery unit FUEL DELIVERY UNIT .

Disconnect electrical connector -4- by pressing release -arrow-.

Scheme 54

Cut through cable ties -2- and free up electrical connector.

Release retaining tabs -1- and -3- and remove fuel level sensor -G- upward.

Installation is in reverse order of removal, note the following

Insert fuel level sensor -G- in guides on fuel delivery unit and push down until it engages.

Connect electrical connector and make sure it engages.

Install fuel delivery unit while following the information on connecting the battery, refer to INSTALLING .

FUEL LEVEL SENSOR 2

Special tools and workshop equipment required

1. Electric cutter V.A.G 1561A
2. Knife, L-shaped 25.4 mm V.A.G 1561/22
3. Union nut tool T40068 A
4. Sealant

Proceed as follows

Observe safety precautions SAFETY PRECAUTIONS .

Observe rules for cleanliness CLEAN WORKING CONDITIONS .

Empty fuel tank if necessary FUEL TANK DRAINING .

Disconnect battery Removal and Installation .

Fold rear bench seat backrest forward.

Remove loading aid frame Removal and Installation .

Cut through sealing around locking flange cover with electric cutter V.A.G 1561A and blade, L-shaped 25.4 mm V.A.G 1561/22.

Scheme 55

Remove locking flange cover.

Repair damaged painted surfaces.

Apply corrosion protection if necessary, use Corrosion Protection Measures.

Disconnect vent lines -1, 2 and 3- on locking flange by pressing release buttons.

Scheme 56

Use a union nut tool T40068 A to remove union nut -arrow-.

Scheme 57

Note. The plastic catch on the threaded ring breaks off when the union nut is loosened.

Carefully remove fuel level sensor 2 -G169- -3- from fuel tank opening.

Scheme 58

Note. When removing, be sure not to bend floater arm of Fuel Level Sensor 2 -G169-.

Disconnect electrical connector -2- by pressing release -arrow A-.

Press bracket together with needle nose pliers -B arrows- and remove suction line -1-.

1. Tightening specifications «FUEL DELIVERY UNIT AND FUEL LEVEL SENSOR ASSEMBLY OVERVIEW»(/audi/a5/i-2007-2011/remont/fuel-system/#fuel-supply-system-engine-codes-cala-caua-coupe-as-of-042008) .

Installation is in reverse order of removal, note the following

Note. Replace sealing ring and union nut.

Install suction line -1- until it engages audibly.

Connect electrical connector -2- and make sure it engages.

Note. When inserting, be sure not to bend floater arm on fuel level sensor 2 -G169-.

Carefully insert fuel level sensor 2 -G169- -3- in fuel tank opening.

Stretch new sealing ring over locking flange and insert it in groove on fuel tank.

Place union nut -1- on your left arm and push locking flange -2- forcefully into installation position with your left hand -arrow-.

Scheme 59

1. Tab -4- on locking flange must lie between tabs -3- and -5- on threaded ring.

Slide union nut -1- off your left arm using your right hand while your left hand keeps holding locking flange -2- down firmly -arrow-.

Scheme 60

Position union nut -1- with your right hand so double ridge -5- on ribs is over lug -3- on locking flange (approximately "10 o'clock" position). This makes sure union nut engages at beginning of threads immediately when tightening it -4-.

Press locking flange down firmly with a screwdriver -arrow-.

Turn union nut approximately 480° with your right hand until double ridge -1- is in approximately "2 o'clock position" while keeping locking flange pressed down firmly with your left hand.

Scheme 61

Tighten union nut using a union nut tool T40068 A.

Scheme 62

1. Verification: The double ridge -1- must now be between "7 and 8 o'clock".

Shortly before installing locking flange cover, smooth out rest of sealant on cover and on body with a carpet knife but do not remove it completely.

Note. The remaining material acts as an adhesive base for the new sealant that will be applied.

Cut sealant cartridge nozzle as shown in the illustration.

Scheme 63

1. Dimension -a- = 7 mm.

Apply a new sealant bead to the smoothed sealant on the locking flange cover and insert cover.

1. The arrow on cover must point in direction of travel.

Install loading aid frame Removal and Installation .

Connect battery and observe safety precautions after connecting battery Removal and Installation .

After installing fuel level sensor 2 -G169-, fill vehicle with at least 5 liters of fuel.

Proceed as follows

Observe safety precautions SAFETY PRECAUTIONS .

Observe rules for cleanliness CLEAN WORKING CONDITIONS .

Remove fuel delivery unit FUEL DELIVERY UNIT .

Remove fuel level sensor 2 -G169- FUEL LEVEL SENSOR 2 .

Carefully remove fuel level sensor 2 -G169- -3- with suction line -1- from fuel tank opening.

Note. When removing, be sure not to bend floater arm of Fuel Level Sensor 2 -G169-.

Disconnect electrical connector -2- by pressing release -arrow A-.

Press bracket together with needle nose pliers -B arrows- and remove suction line.

Installation is in reverse order of removal, note the following

Prepare suction line for installation -6

Scheme 64

1. The electrical connector -5- must be clipped onto suction line -6- as shown in the illustration.
2. The electrical wires -2- and suction line must be secured with a total of 7 cable ties -3, 4, 7 and 8-.
3. The O-ring -1- must be installed on suction line.

Install suction line -1- until it engages audibly.

Connect electrical connector -2- and make sure it engages.

Note. When inserting, do not bend the floater arm on fuel level sensor 2 -G169- -3-.

Slide suction line from luggage compartment into fuel tank opening.

Stretch new sealing ring over locking flange and insert it in groove on fuel tank.

Reach into front fuel tank opening and pull suction line into installation position.

Install Fuel Level Sensor 2 -G169-, refer to INSTALLING

Install fuel delivery unit, refer to INSTALLING .

Connect battery and observe safety precautions after connecting battery Removal and Installation .

After installing suction line, fill vehicle with at least 5 liters of fuel.

To vent fuel line to the auxiliary heater metering pump, run for 10 minutes at wide open throttle (WOT).

Scheme 65

Special tools and workshop equipment required

1. Remote control V.A.G 1348/3A with adapter cable V.A.G 1348/3-2
2. Portable multimeter V.A.G 1526C
3. Connector test set V.A.G 1594C

Special tools and workshop equipment required

Scheme 66

Scheme 67

Scheme 68

Scheme 69

Scheme 70

Scheme 71

Scheme 72

1. Electric cutter V.A.G 1561A
2. Knife, L-shaped 25.4 mm V.A.G 1561/22
3. Union nut tool T40068 A
4. Engine/transmission jack V.A.G 1383 A
5. Pressure gauge K-Jetronic V.A.G 1318
6. Adapter V.A.G 1318/10-12 and adapter V.A.G 1318/15
7. Fuel siphoning unit VAS 5190

See also:
• [For engine(s) CALA] General Information
• Removal and Installation
• [For engine(s) CALA] Specifications
• Removal and Installation
• Description and Operation
• Removal and Installation
• Description and Operation
• Removal and Installation
• FUEL TANK DRAINING
• FUEL PUMP CONTROL MODULE, CHECKING
• SAFETY PRECAUTIONS
• CLEAN WORKING CONDITIONS
• FUEL FILTER
• EVAP CANISTER
• FUEL TANK WITH ATTACHMENTS
• FUEL PUMP, TESTING
• FUEL DELIVERY UNIT
• FUEL PUMP CONTROL MODULE
• FUEL LEVEL SENSOR 2, CHECKING
• FUEL LEVEL SENSOR 2
• FUEL LEVEL SENSOR 1, CHECKING
• TEST CONDITIONS
• PERFORMING DIAGNOSTIC LEAK TEST