Skoda Octavia Workshop Manual page 86

24
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Fuel Preparation/Fuel Injection
- Unplug the connector at the ACF valve.
K - Use the hand-held multimeter to carry out a
resistance measurement between the
contacts of the valve.
Specification: 22...30 Ω
- If the specification is not achieved, replace
ACF valve.
Testing voltage supply of ACF valve
Note:
The voltage for the ACF valve is supplied
through the fuel pump relay.
- Unplug the connector at the ACF valve.
K - Connect the diode test lamp between contact
1 of the connector and engine earth.
- Start the engine.
Specification: The diode test lamp must come on.
- If the diode test lamp does not come on, test
the cable connection from contact 1 to the
fuse for continuity, and repair if necessary.
⇒ Current Flow Diagrams, Electrical Fault
Finding and Fitting Locations binder
- If the cable connection is o.k., test fuel pump
relay ⇒ page 24-52.
Testing actuation of the ACF valve
K - Connect the diode test lamp between contact
2 and positive (+) of battery.
- Initiate final control diagnosis (function 03)
and select the activated charcoal filter
solenoid valve (N80) ⇒ page 01-12 - Earth
point, in left engine compartment
Note:
It is not necessary to take out the fuel pump
relay and to bridge the contacts for this test.
Specification: The diode test lamp must flash.
OCTAVIA
Edition 11.98
S00.5109.51.20