Work Procedure

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 Audi S5, 2011 Audi S5, 2010 Audi S5, 2010 Audi A5, and 2009 Audi S5. However, it is still accessible from the selected car via links, so may be relevant.

Proceed As Follows:

-- Observe Test Conditions TEST CONDITIONS .

-- Remove Rear Bench Seat. Refer to SEAT BENCH/SINGLE SEAT, REMOVING AND INSTALLING .

-- Remove locking flange cover -arrows-.

Fig 1: Identifying Cover Bolts For Locking Flange

Courtesy of AUDI OF AMERICA, LLC

-- Disconnect electrical connector -1- on locking flange.

Fig 2: Disconnect Connectors

Courtesy of AUDI OF AMERICA, LLC

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-.

Fig 3: Checking Fuel Pressure

Courtesy of AUDI OF AMERICA, LLC

-- 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.

Fig 4: Identifying Alarm Horn, Removal

Courtesy of AUDI OF AMERICA, LLC

NOTE:

Ignore -1 and 3- and -arrow-.

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

Fig 5: Opening Terminal Box Cover

Courtesy of AUDI OF AMERICA, LLC

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

Fig 6: Checking Fuel Pressure

Courtesy of AUDI OF AMERICA, LLC

-- Remove cover from fuel filler tube.

-- Remove engine cover -arrows-.

Fig 7: Identifying Engine Cover

Courtesy of AUDI OF AMERICA, LLC

WARNING:

There is a risk of injury because the fuel is under high pressure.

To reduce pressure in fuel system, lay a clean cloth around the connector and carefully loosen connector.

-- Disconnect fuel line -arrow-.

Fig 8: Disconnecting Fuel Line

Courtesy of AUDI OF AMERICA, LLC

-- 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.

Fig 9: Connecting Fuel Inj. Pressure Gauge-CIS V.A.G 1318 With Adapter V.A.G 1318/11 And V.A.G 1318/12 In Fuel Line

Courtesy of AUDI OF AMERICA, LLC

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

-- Open pressure gauge shut-off valve.

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.

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 (cm³ /15 s).

Fig 10: Compare Quantity Of Fuel Delivered With Minimum Delivery Rate In Diagram

Courtesy of AUDI OF AMERICA, LLC

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:

Fuel Lines Pinched.
Fuel Filter Clogged.
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 SEAT BENCH/SINGLE SEAT, REMOVING AND INSTALLING .