82
03/05
SPIDER MAX 500
B
Check the continuity of: (multimeter
Ω
Ω
Ω
Ω
Ω
)
A) the green/black cable across the central unit connector PIN 13
and the injector connector.
B) the orange/red cable across the injector connector and the red
relay PIN 87.
Replace the injector.
12.14 Injector hydraulic check
In order to perform the injector check, we suggest to disassemble the intake manifold with the throttle body
and the injector.
Disassemble the injector from the manifold only if strictly necessary.
Refer to the chapter “THERMAL UNIT AND TIMING” (Service Engine Manual) to carry out the above
mentioned interventions.
Connect the diagnostic multimeter by means of the plug positioned under the seat.
Fit the diagnostic wiring, the fuel pressure
checking kit. In this case, the injector can
be connected directly to the instrument qui-
ck couplings.
Use a graduated container of at least 100 cm
3
with 10÷20 cm
3
resolution.
Connect the injector to the cable supplied with the injector multimeter. The cable is equipped with
alligator clips for direct connection to the battery. Prepare the auxiliary battery.
Move the key switch to the “ON” position and the emergency switch to “RUN” and lift the stand.
Select the ”active diagnostics” function.
Start the pump diagnostic check.
