2 - Make sure the negative terminals (battery neg-
ative and starter negative) are correctly connected
to each other and to the frame.
YES go to 4 NO go to 5
3 - Recharge and if necessary replace the battery.
4 - Connect the diagnostic tester (see chapter "Injection system").
Connect the induction clamp of an ammeter to the positive power supply cable of the starter motor.
Remove the 10A fuse no. 12 (see "fuses" chapter).
Switch in position "ON" with interrupt switch in position "RUN" and side stand raised.
Select the "PARAMETERS" function.
Start the engine (so that it cannot move) long enough to measure the rpm and starter absorption.
N.B.
THE DECLARED RPM VALUE IS THAT INDICATED BY THE TESTER, THE RPM READING IS NOT
THE REAL ONE, BUT IS VALID FOR DIAGNOSTIC PURPOSES.
Specific tooling
020460Y Scooter diagnosis and tester
Electric characteristic
Absorption at trailing speed:
80 - 120 A
Revolution speed =
approx. 300-400 rpm
YES go to 6 NO go to 7 NO go to 8 NO go to 9
5 - Restore the connections
6- The values are correct.
Finally carry out a check of the power consumption at idle speed.
Remove the starter motor (see the flywheel and starter system).
Reconnect the earth and positive and perform the test.
Electric characteristic
Current consumption at idle speed:
<40 A
YES go to 10 NO go to 11
MP3 400 i.e. Engine
ENG - 37
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