Skoda OCTAVIA 2004 Workshop Manual page 175

OCTAVIA
Edition 12.00
S00.5111.54.20
Fuel Formation/Fuel Injection
- Diode test lamp must flash (about 4x for each
revolution of wheel).
Note:
Ensure that the right front wheel does not ro-
tate.
If the diode test lamp does not flash:
Test the following cable connections for short
circuit to positive and to negative and also for
open circuit.
- Rectify any open circuit or short circuit in the
wiring.
- Connect diode test lamp between socket 1
(earth) and socket 20 (vehicle speed signal).
- Switch ignition on and rotate front left wheel
by hand.
- Diode test lamp must flash (about 4x for each
revolution of wheel).
Note:
Ensure that the right front wheel does not ro-
tate.
If the diode test lamp does not flash:
Test the following cable connections for short
circuit to positive and to negative and also for
open circuit.
- Rectify any open circuit or short circuit in the
wiring.
If no fault is found in the wiring:
- Determine all the users of the vehicle speed
signal (e.g. radio, air conditioning, etc.), sepa-
rate the connection to the dash panel insert
one after the other and repeat the test until
the cause is determined.
.
51
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20
23
contact
3
contact
3
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