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– Ensure that drain tap -C- on pressure tester -1- is closed.
– Shut-off valves -A- and -B- on pressure tester -1- are open.
– Press remote control - V.A.G 1348/3A- .
Note
The fuel system pressurisation pump - G6- will be actuated.
– Set pressure of 4.0 bar on pressure regulating valve -arrow-
using adjuster wheel.
– From this point on do not change position of adjuster wheel
any more.
– Drain measuring container.
– Press remote control for 60 seconds whilst measuring voltage
at fuel pump.
– Compare delivered quantity of fuel with specification indicated
in chart.
Name of axis
Quantity of fuel delivered
Voltage at fuel pump with en‐
gine not running and pump run‐
ning.
Reading example:
During the test a voltage of 10.5 volts is measured. This equates
to a minimum fuel delivery rate of approx. 1200 cm
onds.
If specification is not obtained
– Open tank flap unit.
– Clean area around fuel filler neck.
– Unscrew cap from fuel filler neck -arrow-.
– Repeat fuel delivery rate check.
If reading matches specification:
– Check fuel tank breather
⇒ "6.3 Checking fuel tank breather", page 67
If specification is not obtained
– Check fuel lines for possible restrictions (kinks) or blockages.
– Check fuel lines for leaks and damage.
If no fault is found:
Proceed as follows to check fuel delivery rate at fuel delivery unit:
CC 2012 ➤ , Passat 2011 ➤ , Passat Variant 2011 ➤
Fuel supply system, petrol engines - Edition 05.2019
Unit
3
cm
Volt
3
in 60 sec‐
.
93
8. Fuel pump
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