Yamaha YP250R 2005, Service Manual

Page: 329 / 370

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ELEC
SIGNALING SYSTEM
EAS00799
3. The turn signal light, turn signal indicator
light or both fail to blink.
YES
NO
YES
NO
YES NO
YES
NO
1. Turn signal light bulbs and sockets
• Check the turn signal light bulbs and sock-
ets for continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”.
• Are the turn signal light bulbs and sockets
OK?
Replace the turn sig-
nal light bulb, socket
or both.
2. Turn signal switch
• Check the turn signal switch for continuity.
Refer to “CHECKING THE SWITCHES”.
• Is the turn signal switch OK?
Replace the turn sig-
nal switch.
3. Hazard switch
• Check the hazard switch for continuity.
Refer to “CHECKING THE SWITCHES”.
• Is the hazard switch OK?
Replace the hazard
switch.
4. Voltage
• Connect the pocket tester (DC 20 V) to the
turn signal/hazard relay coupler as shown.
Turn signal function
Positive tester probe
→
brown 1
Negative tester probe
→
ground
Hazard function
Positive tester probe
→
red/blue
2
Negative tester probe
→
ground
Turn signal function
• Set the main switch to “ON”.
• Measure the voltage (DC 12 V) on brown
1
at the turn signal/hazard relay coupler.
Hazard function
• Set the main switch to “ON”.
• Measure the voltage (DC 12 V) on red/
blue
2
at the turn signal/hazard relay cou-
pler.
• Is the voltage within specification?
The wiring circuit
from the main switch
to the turn signal/
hazard relay coupler
is faulty and must be
repaired for the turn
signal function.
The wiring circuit
from the battery to
the turn signal/haz-
ard relay coupler is
faulty and must be
repaired for the haz-
ard function.