PIAGGIO 500 cc Service Manual page 134

Fuel injection
Disconnect the aerial connector and check
continuity (8 ± 2 Ω).
YES
Check the correct positioning of the aerial
YES
Replace the decoder and check that the code is
3 Diagnostic code n°3
Code n°3 indicates a system in which the decoder
perceives a transponder not foreseen in the program-
ming.
- Starting inhibited
- Fuel injection indicator fixed light on
Check whether the code persists if the master key
YES
Check that component connections are correct
(keys-decoder-control unit)
YES
Replace the decoder and control unit.
Reprogramme the components.
9 - 22
YES
present
is used.
NO
NO
"ON"
0,5'' 0,5''
0,7''
2''
0,5''
Repeat the programming of
NO
all the service keys.
NO
Replace aerial
Position correctly
LED on
0,5''
0,5'' 2''
LED off
Reset