PIAGGIO MP3 500 i.e. SPORT, Service Station Manual

Page: 256 / 432

The control unit is fitted with a self-diagnosis sys-
tem connected to a warning light on the instrument
panel.
Failures are detected and restored by the diagnostic tester.
In any case, when the fault is no longer present, data storage is automatically wiped clean after 16
cycles of use (cold starting, running at regular engine temperature, stop).
The diagnostic tester is also required for adjusting idle speed carburetion.
Specific tooling
020922Y Diagnosis Tool
The RIU injection-ignition system carries out
checks on the rpm indicator and the electric fan for
radiator cooling.
The RIU control unit has a decoder for the anti-
theft immobilizer system.
The RIU control unit is connected to a diagnostic
LED on the instrument panel that also carries out
the deterrent flashing function.
Precautions
1 . Before repairing any part of the injection system, check if any faults have been stored. Do not dis-
connect the battery before checking for faults.
2 . The fuel supply system is pressurised at ~ 300 kPa (3 BAR). Before disconnecting the fast-release
fitting of the fuel supply pipe, check that there are no naked flames. Do not smoke. Act with caution to
avoid spraying fuel to your eyes.
3 . When repairing electric components, the battery must always be disconnected unless it is strictly
necessary for the battery to be connected.
4 . When functional checks are performed, make sure that the battery voltage exceeds 12V.
5 . Before attempting to start the vehicle, ensure that there are at least two litres of fuel in the tank.
Failure to respect this norm will damage the fuel pump.
6 . If a long period is envisaged with the vehicle not in use, fill the tank to at least the halfway mark. This
will ensure the pump will be covered by fuel.
7 . When washing the vehicle, do not spray excessive water on electric components and wiring.
Injection
MP3 500 i.e. SPORT Business_LT_ ABS-ASR_EU_USA (2015)
INJEC - 256