Yamaha 2004 FZ6-SS Service Manual - Elec
8-33
LIGHTING SYSTEM
ELEC
YES
NO
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?
Replace the tail /
brake light bulb,
socket or both.
EAS00790
3. The tail / brake light fails to come on.
YES
NO
2. Voltage
S Connect the pocket tester (DC 20 V) to the
tail / brake light coupler (wire harness side)
as shown.
Wiring circuit from
the main switch to
the tail / brake light
coupler is faulty and
must be repaired.
Positive tester probe
! blue
Negative tester probe
! black
1
2
S Turn the main switch to “ON”.
S Measure the voltage (DC 12 V) of blue on
the tail / brake light coupler (wire harness
side).
S Is the voltage within specification?
2
This circuit is OK.
EAS00791
4. The turn signal/position light fails to come on.
YES
NO
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?
Replace the turn sig-
nal / position light
bulb, socket or both.
YES
NO
2. Voltage
S Connect the pocket tester (DC 20 V) to the
turn signal / position light coupler (wire har-
ness side) as shown.
The wiring circuit from
the main switch to the
turn signal/position
light coupler is faulty
and must be repaired.
S Turn the main switch to “ON”.
S Measure the voltage (DC 12 V) of blue or
blue / red
on the turn signal / position light
coupler (wire harness side).
S Is the voltage within specification?
3
This circuit is OK.
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
1
2
A
Left turn signal / position light
Right turn signal / position light
B
A
B
3
4
1