Checking The Injectors; Choke Motor - APRILIA RST mille Futura 2001 Service Manual

ELECTRICAL SYSTEM

6.6.1 CHECKING THE INJECTORS

With the engine off:
Raise the fuel tank, see 2.8 (LIFTING THE FUEL
TANK).
NOTE
The following steps refer to a single injector, but
are applicable to both.
Disconnect the two-way connector (1) (black) and
measure (on the injector side terminals).
Use a tester (scale x100 Ω), to measure the resistance
between the injector terminals.
Standard value: 11.5 – 13 Ω at 20 °C (68 °F).
If the resistance is infinite (∞) or below the
prescribed value, the injector (2) must be replaced.
Repeat the operations for the other injector.

6.6.2 CHOKE MOTOR

Raise the air filter case, see 7.1.8 (REMOVING THE
AIR FILTER CASE).
NOTE
The stepper motor opens and closes the air
passages, to alter the air/gasoline mixture as needed.
Make sure the stepper motor (2) is working properly:
Unscrew and remove the two screws (1) and detach it
from the filter case.
Set the key to " " and then immediately to "
you have set the key to "
all the way out (approximately 1.12 in), then returns in
by a few millimeters (approximately 0.77 in), performing
an automatic setting.
If this does not occur, check using a tester as an ohm
meter to measure the resistance between the two coils:
– between pins A and D, correct measurement: 50 Ω
±10%;
– between pins B and C, correct measurement: 50 Ω
±10%;
– between the other pins, infinite resistance (∞).
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RST mille
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Release 00/2002 - 03