Yamaha YZ 2017 Series, Owner'S Service Manual

Page: 367 / 410

ELECTRICAL COMPONENTS
8-63
EASB29B348
CHECKING THE BULBS AND BULB SOCK-
ETS
1. Remove:
• Bulb
ECA
NOTICE
Be sure to hold the socket firmly when re-
moving the bulb. Never pull the lead, other-
wise it may be pulled out of the terminal in
the coupler.
TIP
Bulbs “a” is used for warning light and can be
removed form their respective socket by care-
fully pulling them out.
2. Check:
• Bulb (for continuity)
(with the pocket tester)
No continuity

Replace.
TIP
Before checking for continuity, set the pocket
tester to “0” and to the “

1” range.
3. Check:
• Bulb socket (for continuity)
(with the pocket tester)
No continuity

Replace.
TIP
Check each bulb socket for continuity in the
same manner as described in the bulb section;
however, note the following.
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Install a good bulb into the bulb socket.
b. Connect the pocket tester probes to the re-
spective leads of the bulb socket.
c. Check the bulb socket for continuity. If any of
the readings indicate no continuity, replace
the bulb socket.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
EASB29B349
CHECKING THE FUSES
The following procedure applies to all of the
fuses.
ECA
NOTICE
To avoid a short circuit, always stop the en-
gine when checking or replacing a fuse.
1. Remove:
• Side cover (left/right)
• Seat
Refer to “GENERAL CHASSIS” on page 4-
1.
2. Check:
• Main fuse “1”
• Radiator fan motor fuse “2”
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Connect the pocket tester to the fuse and
check the continuity.
TIP
Set the pocket tester selector to “
 
1”.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
a
1
2