C Hecking The Bulbs And Bulb Sockets - Yamaha WR450FB 2012 Owner's Service Manual

EAS27990
CHECKING THE BULBS AND BULB SOCK-
ETS
TIP _ _ _ _ _ _ _ _ _ _ _ _ _ _
Do not check any of the lights that use LEDs.
Check each bulb and bulb socket for damage
or wear, proper connections, and also for con-
tinuity between the terminals.
Damage/wear~
Repair or replace the bulb,
bulb socket or both.
Improperly
connected~
Properly connect.
No continuity
~
Repair or replace the bulb,
bulb socket or both.
Types of bulbs
The bulbs used on this vehicle are shown in the
illustration on the left.
• Bulbs "a" and "b" are used for 'the headlights
and usually use a bulb holder that must be de-
tached before removing the bulb. The majority
of these types of bulbs can be removed from
their respective socket by turning them coun-
terclockwise.
• Bulbs "c" is used for turn signal and can be re-
moved from the socket by pushing and turn-
ing the bulb counterclockwise.
c
Checking the condition of the bulbs
The following procedure applies to all of the
bulbs.
1. Remove:
•Bulb
9-64
ELECTRICAL COMPONENTS
EWA13320
AwARNING
Since the headlight bulb gets extremely hot,
keep flammable products and your hands
away from the bulb until it has cooled down.
ECA14380
llllll~~~~--~--
• Be sure to hold the socket firmly when re-
moving the bulb. Never pull the lead, oth-
erwise it may be pulled out of the terminal
in the coupler.
•Avoid touching the glass part of the head-
light bulb to keep it free from oil, otherwise
the transparency of the glass, the life of
the bulb, and the luminous flux will be ad-
versely affected. If the headlight bulb gets
soiled, thoroughly it with a cloth moist-
ened with alcohol or lacquer thinner.
2. Check:
• Bulb (for continuity)
(with the pocket tester)
No continuity
~
Replace.
~
Pocket tester
7-
90890-03112
Analog pocket tester
YU-03112-C
TIP _ _ _ _ _ _ _ _ _ _ _ _ _
Before checking for continuity, set the pocket
tester to "O" and to the ".Ox 1" range.
TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT
a. Connect the positive tester probe to terminal
"1" and the negative tester probe to terminal
"2", and check the continuity.
b. Connect the positive tester probe to terminal
"1" and the negative tester probe to terminal
"3", and check the continuity.
c. If either of the readings indicate no continu-
ity, replace the bulb .
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