Skoda FABIA 2000 Workshop Manual page 96

20
–
Open shut-off cock on the measuring device -position
A-.
–
Activate the remote control and simultaneously close
the shut-off cock in the measuring device in position
-B-.
–
If a pressure of min. 3 bar (0.3 MPa) is reached, dis-
connect the remote control and observe the drop in
pressure on the manometer. The pressure must not
drop below 2.5 bar (0.25 MPa) after 10 minutes.
If the pressure drops:
–
Check fuel line connections for leaks.
If the wiring is O.K.:
–
Replace the fuel delivery unit.
If the pressure does not drop and the delivery unit is O.K.:
–
Replace fuel pressure regulator.
Disconnecting the fuel delivery unit with
crash signal
Operation
Vehicles with airbag are equipped with crash signal dis-
connection of the fuel delivery unit. If while driving the air-
bag units are ignited, the fuel pump relay opens and
disconnects the fuel pump. The position for improved en-
gine starting is simultaneously controlled. When the door
is opened, the fuel pump is operated for about 2 seconds
so that pressure is built up in the fuel system.
Observe safety instructions when opening the fuel sys-
tem ⇒ 20-1 page 3.
–
Testing fuel pump relay ⇒ Current Flow Diagrams,
Electrical Fault Finding and Fitting Locations.
20-1 14
page
FABIA 2000
Removing and installing parts of the fuel supply system
1.4/55; 1.4/74 Engine - Mechanical Components
Edition 05.05
S00.5306.06.20