Yamaha Fz6n Manual

8-33
LIGHTING SYSTEMELEC
YESNO 1. Tail / brake light bulb and socket

Check the tail / brake light bulb and socket for
continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”.

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.
YESNO 2. Voltage

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...

8-34
SIGNALING SYSTEMELEC
EAS00793
SIGNALING SYSTEM
CIRCUIT DIAGRAM 

8-35
SIGNALING SYSTEMELEC
1Main switch
4Fuse (backup)
6Fuse (main)
9Battery
10Starting circuit cut-off relay
12Neutral switch
13Fuel pump
20ECU
31Oil level waning light
33Neutral indicator light
34Multi-function meter
36Turn signal indicator light
37Oil level switch
39Front brake light switch
45Fuse (signal)
47Fuse (ignition)
48Fuse (tail)
49Turn signal relay
50Rear brake light switch
52Tail / brake light
56Hazard switch
57Turn signal switch
58Horn switch
59Horn
63Rear turn signal light (right)
64Rear...

8-36
YESNO

Clean the battery
terminals.

Recharge or re-
place the battery.
EAS00749
3. Main switch

Check the main switch for continuity.
Refer to “CHECKING THE SWITCHES”.

Is the main switch OK?
YESNO
Replace the main
switch.
YESNO 1. Horn switch

Check the horn switch for continuity.
Refer to “CHECKING THE SWITCHES”.

Is the horn switch OK?
Replace the left han-
dlebar switch.
EAS00796
CHECKING THE SIGNALING SYSTEM
1. The horn fails to sound.
EAS00795
4. Wiring

Check the entire signaling system’s...

8-37
SIGNALING SYSTEMELEC
YESNO 1. Tail / brake light bulb and socket

Check the tail / brake light bulb and socket for
continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”.

Are the tail / brake light bulb and socket OK?
Replace the tail /
brake light bulb,
socket or both.
EAS007972. The tail / brake light fails to come on.
YESNO 2. Brake light switches

Check the brake light switches for continuity.
Refer to “CHECKING THE SWITCHES”.

Is the brake light switch OK?
Replace the brake
light switch....

8-38
SIGNALING SYSTEMELEC
NO
YESNO
The wiring circuit
from the main switch
to the tail / brake light
coupler is faulty and
must be repaired.
This circuit is OK.
YES 1. Turn signal indicator light (LEDs)

Check the turn signal indicator light for conti-
nuity.
Refer to “CHECKING THE LEDs”.

Are the turn signal indicator light OK?
Replace the meter
assembly.
EAS00799
3. The turn signal / position light, turn signal
indicator light or both fail to blink.
YES
2. Turn signal switch

Check the turn signal...

8-39
SIGNALING SYSTEMELEC
YESNO
The wiring circuit
from the turn signal
switch to the turn sig-
nal light connector is
faulty and must be
repaired. Left turn signal / position light
Positive tester probe 
  ground
Negative tester probe 
 chocolate
Right turn signal / position light
Positive tester probe 
 ground
Negative tester probe 
  dark green
1
2

Turn the main switch to “ON”.

Set the turn signal switch to “ ” or “ ”.

Measure the voltage (DC 12 V) of the choco-
late   or dark green   at the turn...

8-40
SIGNALING SYSTEMELEC
YESNO
Replace the starting
circuit cut-off relay.
YESNO 4. Voltage

Connect the pocket tester (DC 20 V) to the
meter assembly coupler (wire harness side)
as shown.
The wiring circuit
from the main switch
to the meter assem-
bly coupler is faulty
and must be re-
paired. Negative tester probe 
 ground
Positive tester probe 
 red / white
1

Turn the main switch to “ON”.

Measure the voltage (DC 12 V) of red / white
at the meter assembly coupler (wire harness
side).

Is the voltage...

8-41
SIGNALING SYSTEMELEC
3. Voltage

Connect the pocket tester (DC 20 V) to the
meter assembly coupler (wire harness side)
as shown.
Positive tester probe 
 black / white
Negative tester probe 
 red / white
1
2

Turn the main switch to “ON”.

Measure the voltage (DC 12V) of black /
white   and red / white   at the meter as-
sembly coupler.

Is the voltage within specification?
12
YESNO
The wiring circuit
from the main switch
to the meter assem-
bly is faulty and must
be repaired.
This circuit is OK....

8-42
SIGNALING SYSTEMELEC
YESNO 2. Voltage

Connect the pocket tester (DC 20 V) to the
meter assembly coupler (wire harness side)
as shown.
The wiring circuit
from the main switch
to the meter assem-
bly coupler is faulty
and must be re-
paired. Positive tester probe 
 green / white 
Negative tester probe 
 black / white
1
2

Turn the main switch to “ON”.

Measure the voltage (DC 12 V) of
green / white   and black / white   at the
meter assembly coupler.

Is the voltage within specification?
This circuit...