VESPA GTS Super 125 i.e., Service Station Manual

Page: 141 / 285

5. 7.5A fuse No. 2
6. Injection load relay
7. Fuel pump
8. HV coil
9. Fuel injector
10.Electric fan relay
11.Coolant electric pump
When switched to "ON", the fuel pump starts to
rotate for two seconds and then stops. When the
engine starts, in the presence of rpm timing signal
the pump is continuously supplied.
ELECTRICAL DATA
•
Pump winding resistance ~ 1.5 Ohm
•
Input current during regular operation
1.4 - 1.8 A
•
Input current to the closed hydraulic
circuit ~ 2 A (to be checked with ap-
propriate tool for fuel pressure control
choking the circuit on the return pipe)
Check that the injection load 15A fuse No. 3 works properly.
Check that the 7.5A fuse No. 2 for live control unit power works properly.
Check the efficiency of the injection load relay.
Check the resistance of the energising coil be-
tween pins 86 and 85: 40 to 80 Ohm
Apply a voltage of 12V to pins 86 and 85; make
sure that there is continuity between pins 30 and
87 of the relay.
Check the power supply line of the injection load
solenoid energising coil: after switching to "ON",
make sure there is battery voltage, for 2 seconds,
between the Red-White cable and Black-Purple
cable of the solenoid base. If there is not, check
the continuity of the Red-White cable between the
fuse box and the solenoid base and of the Black-
Vespa GTS Super 125 i.e.
Injection
INJEC - 141