PIAGGIO 500 cc Service Manual page 145

YES
Under-panel feed is correct
(vehicle system section)
Check the connector and continuity of the Key
switch set to "ON"
Check the stop engine electromagnetic switch
connector and its efficiency.
The connector is recognized by its
thicker white wire.
NOTE: check the coil resistance
85 - 86 = ~ 70Ω
Check consents circuit:
- connector and emergency switch
- connector and deviation of the side stand
NOTE: the functioning of this circuit can be revealed also via:
- signalling of impossibility to start the engine
- functioning of the ignition control
Check the harness continuity.
Check the services control main electromagnetic
switch.
Disconnect the main electromagnetic switch.
Check the diode inserted on the excitation earthing of
the main electromagnetic switch.
86 - earth = high resistance continuity (connect the
positive tester with 86 negative to the earth).
On inverting the polarity there should not be continu-
ity.
NO
Fuel injection
9
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