Yamaha FZS1000N, Service Manual

Page: 362 / 394

8-39
Positive tester probe
!
yellow
Negative tester probe
!
black
NO YES
Set the main switch to “ON”.
Pull in the brake lever or push down on the
brake pedal.
Measure the voltage (12 V) of yellow
on the
tail/brake light coupler (wire harness side).
The wiring circuit from
the main switch to the
tail/brake light coupler
is faulty and must be
repaired.
EAS00799
3. The turn signal light, turn signal indicator
light or both fail to blink.
Check the turn signal light bulb and socket
for continuity.
NO
YES
Replace the turn sig-
nal light bulb, socket
or both.
This circuit is OK.
1
2
1
2. Turn signal switch
Check the turn signal switch for continuity.
Refer to “CHECKING THE SWITCHES”.
NO YES
Replace the left han-
dlebar switch.
1
Positive tester probe
!
brown
Negative tester probe
!
ground
YES NO
Set the main switch to “ON”.
Measure the voltage (12 V) on brown
at
the turn signal relay coupler (wire harness
side).
The wiring circuit
from the main switch
to the turn signal
relay coupler is faulty
and must be re-
paired.
3. Voltage
Connect the pocket tester (DC 20 V) to the
turn signal relay coupler (wire harness side)
as shown.
1
1. Turn signal indicator light bulb and socket
3. Voltage
Connect the pocket tester (DC 20 V) to the
tail / brake light coupler (wire harness side)
as shown.
Is the voltage within specification?
Are the turn signal light bulbs and socket OK?
Is the turn signal switch OK?
Is the voltage within specification?
SIGNAL SYSTEM
ELEC