To Control The Circuit - PIAGGIO 500 cc Service Manual

Fuel injection
To control the circuit, proceed as follows:
Connect the diagnosis tester 020460Y
see page 9-17.
Set ignition to "ON" with switch in position "RUN"
and side stand raised.
Select the "ERRORS " function from the menu
Check if the control unit has registered anomalies
concerning the electrical ventilation control circuit.
YES
NO
Select the "ACTIVE DIAGNOSIS"
function from the menu
Activate the electrical fan
diagnosis function
Check acoustically the electrical
fan rotation.
Await the results from the
diagnosis tester.
YES NO
NO
Test completed successfully. Test failed.
The fan rotates. The fan does not rotate.
The electrical ventilation system conforms.
Test completed successfully.
The fan has not worked.
The electromagnetic switch control circuit is efficient.
Check the electrical fan connection, electromagnetic switch contact efficiency,
positive wires, negative wire and the electrical fan motor.
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