PIAGGIO 500 cc Service Manual page 137

YES
Check the presence of battery positive tension on PIN
5/12 of the 12-way digital instrument
YES
YES
Check continuity of the connection wire on the analogic
instrument
4/8 (light blue) - 4 (analogic instrument) = 0Ω (continuity)
The LED is faulty. Replace the analogic instrument.
YES
Reset or replace the harness
Check continuity of the digital instrument
between PIN:
6/12 (yellow-grey) - 4/8 (light blue) = 0Ω
(continuity)
NO
Replace the digital
instrument
NO
Reset the harness
If the fuel injection indicator does not light or if it
lights up for 3 seconds, proceed with controls of
decoder and control unit feed circuits.
See page 9-27.
Fuel injection
NO
NO
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