PIAGGIO 500 cc - Fuel Injection - Revolutions Counter Control Unit and Diagnosis

9 - 107
9
Fuel injection
Connect the control unit.
Ignition set to "ON"' with switch on "RUN" and side stand raised.
Measure the tension between pins 3 and 23 with
engine stopped.
3 - 23 = 9 - 10 V
Using the diagnosis tester carry out
a revolutions counter control.
Measure tension again.
3 - 23 = less than 1V for a few
seconds.
YES
NO
The control circuit of the revolutions
counter is working.
NOYES
Replace the fuel injection control unit.
YES