Yamaha FZ6-SS Service Manual page 404

EAS00790
3. The tail/brake light fails to come on.
1. Tail/brake light bulb and socket
S Check the tail/brake light bulb and socket for
continuity.
Refer to "CHECKING THE BULBS AND
BULB SOCKETS".
S Are the tail/brake light bulb and socket OK?
YES
2. Voltage
S Connect the pocket tester (DC 20 V) to the
tail/brake light coupler (wire harness side)
as shown.
Positive tester probe ! blue
Negative tester probe ! black
S Turn the main switch to "ON".
S Measure the voltage (DC 12 V) of blue
the tail/brake light coupler (wire harness
side).
S Is the voltage within specification?
YES
This circuit is OK.
NO
Replace the tail/
brake light bulb,
socket or both.
1
2
on
2
NO
Wiring circuit from
the main switch to
the tail/brake light
coupler is faulty and
must be repaired.
8-33
LIGHTING SYSTEM
EAS00791
4. The turn signal/position light fails to come on.
1. Turn signal/position light and socket
S Check the turn signal/position light bulb and
socket for continuity.
Refer to "CHECKING THE BULBS AND
BULB SOCKETS".
S Are the turn signal/position light bulb and
socket OK?
YES
2. Voltage
S Connect the pocket tester (DC 20 V) to the
turn signal/position light coupler (wire har-
ness side) as shown.
Left turn signal/position light
A
Right turn signal/position light
B
Left turn signal/position light
Positive tester probe ! blue
Negative tester probe ! black
Right turn signal/position light
Positive tester probe ! blue/red
Negative tester probe ! black
A
S Turn the main switch to "ON".
S Measure the voltage (DC 12 V) of blue
blue/red 3 on the turn signal/position light
coupler (wire harness side).
S Is the voltage within specification?
YES
This circuit is OK.
ELEC
NO
Replace the turn sig-
nal/position light
bulb, socket or both.
1
2
3
4
B
or
1
NO
The wiring circuit from
the main switch to the
turn signal/position
light coupler is faulty
and must be repaired.