Injector Hydraulics Control - PIAGGIO 500 cc Service Manual

Fuel injection
Check continuity between:
- injector feed connector (red-yellow) and pin 13.
- injector feed connector and black-green wire terminal
on the connector between the vehicle system and the
fuel injection system.
Reset continuity or replace the harness.

Injector hydraulics control

To carry out injector control, it is advisable to proceed to dismantling of the air-intake manifold
Complete with throttle body and injector.
Dismantle the injector from the collector only if it proves necessary.
For these operations see Chapter. 7-THERMAL UNIT AND TIMING SYSTEM
Connect the diagnosis tester 020460Y (see page 9-17). Use the socket in the saddle compartment.
Install the special tool 020480Y from the fuel
pressure control kit. See page 9-46
In this case the injector may be connected directly
to the quick-connections of the tool.
Prepare a measuring container of at least 100 cm
Connect the injector to the wire forming part of the fuel injection tester kit .
The wire is supplied with crocodile terminals for direct connection to the battery.
9 - 62
Prepare an auxiliary battery.
Set to "ON" with switch on "RUN" and side stand raised.
Select the "diagnosis active" function.
Activate pump diagnosis.
YES
Replace the injector
3
with a resolution of 10 - 20 cm
NO
3