Yamaha XV1700PCRC Service Manual page 519

2. Brake light switches
• Check the brake light switches for continu-
ity.
Refer to "CHECKING THE SWITCHES".
• Is the brake light switch OK?
YES
3. Voltage
• Connect the pocket tester (DC 20 V) to the
tail/brake light assembly coupler (tail sub-
wire harness side) as shown.
Positive tester probe → yellow 1
Negative tester probe → black 2
L
• Set the main switch to "ON".
• Pull in the brake lever or push down on the
brake pedal.
• Measure the voltage (DC 12 V) of yellow
1 on the tail/brake light assembly coupler
(tail sub-wire harness side).
• Is the voltage within specification?
YES
This circuit is OK.
SIGNALING SYSTEM
NO
Replace the brake
light switch.
1
Y Y L
B B
2
NO
The wiring circuit
from the main switch
to the tail/brake light
assembly coupler is
faulty and must be
repaired.
7 - 49
EAS00799
4. The turn signal light, turn signal indicator
light or both fail to blink.
1. Turn signal light bulb and socket
• Check the turn signal light bulb and socket
for continuity.
Refer to "CHECKING THE BULBS AND
BULB SOCKETS".
• Is the turn signal light bulb and socket OK?
YES
2. Turn signal indicator light LED
• Check the LED of the turn signal light.
Refer to "CHECKING THE BULBS AND
BULB SOCKETS".
• Are the turn signal light LED OK?
YES
3. Turn signal switch
• Check the turn signal switch for continuity.
Refer to "CHECKING THE SWITCHES".
• Is the turn signal switch OK?
YES
– +
ELEC
NO
Replace the turn sig-
nal light bulb, socket
or both.
NO
Replace the speed-
ometer assembly.
NO
Replace the left han-
dlebar switch.