Yamaha FJR1300N 2001 Service Manual page 551

EAS00790
3. The tail/brake light fails to come on.
1. Tail/brake light bulb and socket
• Check the tail/brake light bulb and socket
for continuity.
• Are the tail/brake light bulb and socket OK?
YES
2. Voltage
• Connect the pocket tester (DC 20 V) to the
tail/brake light coupler (wire harness side)
as shown.
Tester positive probe → blue/red 1
Tester negative probe → black 2
• Set the main switch to "ON".
• Set the light switch to "
• Measure the voltage (12 V) of blue/red 1
on the tail/brake light coupler (wire harness
side).
• Is the voltage within specification?
YES
This circuit is OK.
NO
Replace the tail/
brake light bulb,
socket or both.
L/R B
B L
Y
Y
Dg Ch
Ch Dg
" or " ".
NO
wiring circuit from the
main switch to the
tail/brake light cou-
pler is faulty and
must be repaired.
LIGHTING SYSTEM
EAS00791
4. The auxiliary light fails to come on.
1. Auxiliary light bulb and socket
• Check the auxiliary light bulb and socket for
continuity.
• Are the auxiliary light bulb and socket OK?
2. Voltage
• Connect the pocket tester (DC 20 V) to the
auxiliary light couplers (wire harness side)
as shown.
Tester positive probe → blue/red 1
Tester negative probe → black 2
• Set the main switch to "ON".
• Set the light switch to "
• Measure the voltage (12 V) of blue/red 1
on the auxiliary light couplers (wire harness
side).
• Is the voltage within specification?
This circuit is OK.
8 - 35
ELEC
YES
Replace the auxiliary
light bulb, socket or
both.
B
L/R
" or "
YES
The wiring circuit
from the main switch
to the auxiliary light
couplers is faulty and
must be repaired.
– +
NO
".
NO