Checking fuel delivery rate of fuel system pressurisation pump G6 (in fuel tank) - A5 up to model year 2011, A4 up to model year 2012 (vehicles with front-wheel drive) — AUDI

Checking fuel delivery rate of
fuel system pressurisation pump
G6
(in fuel tank) - A5 up to model year 2011, A4 up to model year 2012 (vehicles with front-wheel drive)
Special tools and workshop equipment required
Remote control
V.A.G 1348/3A
for V.A.G 1348 with
adapter cable
V.A.G 1348/3-2
Hand-held multimeter
V.A.G 1526E
Auxiliary measuring set
V.A.G 1594C
Assembly tool
T10118
Procedure
Observe test conditions
Chapter
.
Remove rear seat bench
General body repairs, interior
Rep. gr.
72
Rear seats; Removing and installing seat bench/individual seats
.
Unscrew cover for flange
arrows
.
Release retainer catch with
assembly tool
T10118
and unplug electrical connector
1
on flange.
Note
Disregard
item 2
.
Connect
remote control
V.A.G 1348/3A
for V.A.G 1348 to contact
1
using adapter cable
V.A.G 1348/3-3
and test lead from
auxiliary measuring set
V.A.G 1594C
.
Tape off 2nd connector contact of adapter cable
V.A.G 1348/3-3
with insulating tape
arrow
to prevent short circuits.
Connect contact
5
to vehicle body (earth) using a test lead from
auxiliary measuring set
V.A.G 1594C
.
Move switch of
remote control
V.A.G 1348/3A
for V.A.G 1348 to front of engine compartment.
Remove seal
arrow
.
Unclip entire plenum chamber cover (depending on equipment version) or single component
2
and detach.
Note
Disregard
items 1, 3
.
Release retainer
arrow A
and open cover
arrow B
.
Connect crocodile clip to
jump start socket
U6
item A
in
terminal 30 wiring junction 2
TV22
located in plenum chamber.
WARNING
Risk of injury - fuel system operates under high pressure.
To reduce the pressure in the fuel system, wrap a clean cloth around the connection and carefully loosen the connection.
Press release tab and disconnect fuel line
3
at flange.
Note
Disregard
items 1, 2
.
Attach fuel-resistant hose with inner ∅ of 8 mm to free connection on flange
arrow
and hold into fuel-resistant measuring container.
Press remote control switch for 15 seconds.
Compare amount of fuel delivered with minimum delivery shown in diagram (cm
3
/15 sec.).
Note
Voltage at fuel pump with engine stationary and fuel pump running is approx. 2 volts less than battery voltage.
If minimum delivery rate is not reached, check for the following causes:
There is not enough fuel in fuel tank.
Fuel system pressurisation pump
G6
is defective.
Assemble in reverse order.