Yamaha XV16AL Service Manual page 420

3.Turn signal switch
• Check the turn signal switch for continu-
ity.
Refer to "CHECKING THE SWITCHES".
• Is the turn signal switch OK?
YES
Replace the left han-
dlebar switch.
4.Voltage
• Connect the pocket tester (DC 20 V) to
the turn signal relay coupler as shown.
Tester positive probe → brown 1
Tester negative probe → ground
• Set the main switch to "ON".
• Measure the voltage (12 V) of brown 1
at the turn signal relay coupler.
• Is the voltage within specification?
YES
The wiring circuit
from
switch to the turn
signal relay coupler
is faulty and must
be repaired.
5.Voltage
• Connect the pocket tester (DC 20 V) to
the turn signal relay coupler as shown.
Tester positive probe → brown/white 1
Tester negative probe → ground
SIGNALING SYSTEM
NO
• Set the main switch to "ON".
• Set the turn signal switch to "
• Measure the voltage (12 V) of brown/
white at the turn signal relay coupler.
• Is the voltage within specification?
6.Voltage
• Connect the pocket tester (DC 20 V) to
the turn signal light connectors (wire
harness side) or the meter assembly
coupler as shown.
Å Turn signal light
ı Turn signal indicator light
Left turn signal light
Tester positive probe → chocolate 1
Tester negative probe → ground
NO
Right turn signal light
Tester positive probe → dark green 2
Tester negative probe → ground
Å
the main
7 - 42
–
ELEC
" or "
NO
YES
The turn
relay is faulty and
must be replaced.
+
".
signal
7