APRILIA Scarabeo 50 I.E.-50 4T Workshop Manual page 96

2 STROKE OIL RESERVE WARNING LIGHT
The 2 stroke oil reserve warning light comes on every
time the engine is started, to make sure that the bulb
functions correctly.
TROUBLESHOOTING
A. WARNING LIGHT DOESN'T COME ON WHEN OIL
LEVEL IS INSUFFICIENT
– Check the bulb.
– Make sure that there is voltage on the green/red cable
of the 2 stroke oil level sensor.
– Check the cable connections.
– Check the 2 stroke oil level sensor.
B. WARNING LIGHT REMAINS ON EVEN IF OIL
LEVEL IS SUFFICIENT
– Check the cable connections.
– Check the 2 stroke oil level sensor.
CONTROL DATA
CHECKING THE 2 STROKE OIL LEVEL SENSOR
– Disconnect the cables which connect it to the system
and remove it from the tank.
– Using the ohmmeter function of the multimeter, attach
the multimeter leads to the sensor cables.
– When the sensor is in the vertical position, it should
show a short circuit, that is, less than 0.1 Ω.
– In the reverse position, it should show an open, that is,
infinite resistance.
CONTROL DIODE
– Disconnect it from the system.
– Using the diode testing function of the multimeter,
connect it as shown in the figure.
Correct value (measure A): 0 - 1
Correct value (measure B): ∞
If the tester does not include the diode test function, use
a 12V battery and a 12V - 2W bulb, connecting the diode
as indicated in the figure.
WARNING
Do not use bulbs over 2W, since the diode may be
damaged.
Test (C): the bulb does not light up.
Test (D): the bulb lights up.
Release 00 2003-02
Scarabeo 50 I.E.-50/100 4T
95