APRILIA 8140172, Service And Repair Manual

Page: 259 / 279

ELECTRICAL SYSTEM
6 - 24
RSV mille
6.8.2 CHECKING THE LIGHTS RELAY
To check operation of relay:
◆ Remove the relay box lid located on the left next to the
dashboard.
◆ Remove the relevant relay (identifiable thanks to the la-
bel on the lid):
– high beam light relay (1);
– dimmers relay (2).
◆ Power the two internal male terminals ( - ) at 12V.
◆ Using a tester (acting as ohmmeter), check for breaks
between the other two terminals ( - ).
Correct value with relay powered: 0
Ω.
Correct value with relay not powered:
∞
Ω.
If the values do not correspond to those indicated,
change the relevant relay.
6.8.3 CHECKING THE LIGHTS / LAP DIODE
(multifunction)
To check operation of diode:
◆ Disconnect the three-way connector (3) (coloured
white) (under the rubber protection cap) to the left of
the handlebar.
a
CAUTION
When reassembling, make sure the electric connec-
tor (3) is plugged in properly.
◆ Using a tester (in diode test mode), check the values
between the two male terminals in the diode, as illus-
trated in the figure.
Correct value (measurement A): 0 – 1
Ω
.
Correct value (measurement B):
∞ .
In the event the tester does not feature the diode test
mode, power with a voltage of 12 V, placing a 12V - 2W
bulb on the positive cable and connecting the diode as il-
lustrated in the figure.
a
CAUTION
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.
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