PIAGGIO 500 cc Service Manual page 133

Using a multimeter check the continuity between
control unit pin 16 and decoder connector pin 6
YES
Check the connec-
NO
tions accurately
YES
Replace the decoder.
Connect the battery
Repeat the program-
ming
2 Diagnostic code n°2
Code n°2 indicates a system in which the decoder does
not perceive the transponder signal
- Starting inhibited
- Fuel injection indicator fixed light
In this case proceed as follows:
Control whether the code is repeated when using a
second key
Check that the aerial connector is correctly inserted
Reset
Disconnect the
NO
battery, replace the
control unit, connect
the battery. Repeat
the programming
YES
YES
NO
Reset or replace the harness
"ON"
0,5'' 0,5''
0,7''
2''
0,5''
Anomaly revealed with a service
NO
Replace and reprogramme.
Anomaly revealed with master key:
Replace the transponder with one
from a new cylinder kit.
Replace the decoder and control
Reprogramme.
Reset the connection and check that
NO
the code is present.
Fuel injection
LED on
LED off
2''
key:
unit.
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