Skoda Octavia 1997 Workshop Manual page 30

01
Before repeating final control diagnosis without briefly
running the engine in-between, switch the ignition off
for about 2 seconds.
The electric fuel delivery unit runs during the entire fi-
nal control diagnosis.
Final control diagnosis is aborted after 10 minutes.
Procedure
–
Connect vehicle system tester -V.A.G 1552-. Switch
ignition on and select address word 01 „Engine elec-
tronics" Chap. 01-1.
–
Enter the function 03 „Final control diagnosis" and
confirm entry using the
Actuate injectors -N30- to -N33-:
Readout on display:
Note
The fuel delivery unit must run and the fuel flow must be
audible at the fuel pressure regulator. If the fuel delivery
unit does not run, test actuation
Mechanical Components; Rep. Gr. 20.
–
Open throttle valve. After the idling speed switch
opens, the cylinder injector closes five times.
–
The next injector is operated by pressing the
ton. (Procedure can also be performed without testing
the relevant injector.)
–
Test all the injectors one after the other in this way.
If one of the injectors is not actuated (does not click):
–
Test injectors and cable connections for an open cir-
cuit, short circuit to earth and to positive
Flow Diagrams, Electrical Fault Finding and Fitting Lo-
cations.
Activating solenoid valve for activated charcoal
filter -N80-:
–
Press key. The activated charcoal filter solenoid
valve must continue clicking audibly until the next con-
trol element is actuated by pressing the
The valve clicks, but there is nevertheless probably a
fault (the valve does not open, or does not close):
–
Detach hose from activated charcoal filter solenoid
valve.
–
Fit an auxiliary hose onto the free connection of the
valve.
–
Blow into this hose during final control diagnosis.
The valve must open and close.
If the solenoid valve does not click:
01-4 2
page
OCTAVIA 1997
key.
Q
2.0 l/85 kW Engine,
Current
key.
Self-diagnosis IV
2,0 l/85 kW Engine, Fuel Injection and Ignition System
Actuator diagnosis
Injector cyl. 1 N30
but-
Actuator diagnosis
Activated charcoal filter solenoid valve N80
->
->
Edition 01.04
S00.5128.53.20