Yamaha 2007 R6 Service

							ELECTRICAL COMPONENTS
8-78
1. Main switch
2. Front brake light switch
3. Clutch switch
4. Battery
5. Fuse box (backup, ETV)
6. Main fuse
7. Fuel injection system fuse
8. Starter relay
9. Neutral switch
10. EXUP servo motor
11. Rear brake light switch
12. O
2 sensor
13. Sidestand switch
14. Speed sensor
15. Oil level switch
16. Ignition coil
17. Radiator fan motor
18. Rectifier/regulator
19. Horn
20. Fuse box (radiator fan motor, signaling 
system, ignition, headlight) 
						

							ELECTRICAL COMPONENTS
8-79
1 
5 4 3 2
6
7
8
9
10
12 13
11 1415 1617 
						

							ELECTRICAL COMPONENTS
8-80
1. Air temperature sensor
2. Atmospheric pressure sensor
3. Coolant temperature sensor
4. Fuel pump
5. ECU (engine control unit)
6. Lean angle sensor
7. Relay unit
8. Turn signal relay
9. Crankshaft position sensor
10. Intake air pressure sensor
11. Throttle servo motor
12. Throttle position sensor (for throttle cable 
pulley)
13. Throttle position sensor (for throttle valves)
14. Cylinder identification sensor
15. Radiator fan motor relay
16. Headlight relay (dimmer)
17. Headlight relay (on/off) 
						

							ELECTRICAL COMPONENTS
8-81
EAS27980
CHECKING THE SWITCHES
Dg YBr/WR/Y
ChL/YBB/YBr
B B
(BLUE)
G/Y L/W
R/W
R/B
B Br
(BLUE)
B B
(BROWN)
BrG/Y
7
8
9
10
11 2
3
41
5
6
Sb
R/YR/B
L/WB
ON
OFFRBr/LL/YL/B
YR/Y
Br B
L/Y2B/Y
Ch DgBr/W
(RED)
L/Y L/B
R
Br/L 
						

							ELECTRICAL COMPONENTS
8-82
1. Clutch switch
2. Main switch
3. Dimmer switch
4. Horn switch
5. Turn signal switch
6. Sidestand switch
7. Front brake light switch
8. Engine stop switch
9. Start switch
10. Neutral switch
11. Rear brake light switch 
						

							ELECTRICAL COMPONENTS
8-83
Check each switch for continuity with the pocket tester. If the continuity reading is incorrect, check the 
wiring connections and if necessary, replace the switch.
CAUTION:
ECA14370
Never insert the tester probes into the coupler terminal slots “a”. Always insert the probes from 
the opposite end of the coupler, taking care not to loosen or damage the leads.
NOTE:
•Before checking for continuity, set the pocket tester to “0” and to the “Ω × 1” range.
•When checking for continuity, switch back and forth between the switch positions a few times.
The switches and their terminal connections are illustrated as in the following example of the main 
switch.
The switch positions “a” are shown in the far left column and the switch lead colors “b” are shown in the 
top row. 
The continuity (i. e., a closed circuit) between switch terminals at a given switch position is indication 
by “”. There is continuity between red and brown/blue, blue/yellow and blue/black when the 
switch is set to “ON”.
 
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
ON
OFF
RBr/LL/YL/B
L/Y L/BR
Br/L
ab 
						

							ELECTRICAL COMPONENTS
8-84
EAS27990
CHECKING THE BULBS AND BULB 
SOCKETS
NOTE:
Do not check any of the lights that use LEDs.
Check each bulb and bulb socket for damage or 
wear, proper connections, and also for continuity 
between the terminals.
Damage/wear → Repair or replace the bulb, 
bulb socket or both.
Improperly connected → Properly connect.
No continuity → Repair or replace the bulb, bulb 
socket or both.
Types of bulbs
The bulbs used on this vehicle are shown in the 
following illustration.
•Bulbs “a” and “b” are used for the headlights 
and usually use a bulb holder that must be de-
tached before removing the bulb. The majority 
of these types of bulbs can be removed from 
their respective socket by turning them coun-
terclockwise.
•Bulbs “c” are used for turn signal and tail/brake 
lights and can be removed from the socket by 
pushing and turning the bulb counterclockwise.
•Bulbs “d” and “e” are used for meter and indi-
cator lights and can be removed from their re-
spective socket by carefully pulling them out.
Checking the condition of the bulbs
The following procedure applies to all of the 
bulbs.1. Remove:
•Bulb
WARNING
EW2C01001
Since headlight bulbs get extremely hot, 
keep flammable products and your hands 
away from them until they have cooled 
down.
CAUTION:
EC2C01002
Be sure to hold the socket firmly when re-
moving the bulb. Never pull the lead, other-
wise it may be pulled out of the terminal in 
the coupler.
Avoid touching the glass part of a headlight 
bulb to keep it free from oil, otherwise the 
transparency of the glass, the life of the 
bulb, and the luminous flux will be adverse-
ly affected. If a headlight bulb gets soiled, 
thoroughly clean it with a cloth moistened 
with alcohol or lacquer thinner.
2. Check:
•Bulb (for continuity)
(with the pocket tester)
No continuity → Replace.
NOTE:
Before checking for continuity, set the pocket 
tester to “0” and to the “Ω × 1” range.



 
 
 








 
 



 
 



 
 



 



a. Connect the positive tester probe to terminal 
“1” and the negative tester probe to terminal 
“2”, and check the continuity.
b. Connect the positive tester probe to terminal 
“1” and the negative tester probe to terminal 
“3”, and check the continuity.
c. If either of the readings indicate no continuity, 
replace the bulb.
          
 
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C 
						

							ELECTRICAL COMPONENTS
8-85
Checking the condition of the bulb sockets
The following procedure applies to all of the bulb 
sockets.
1. Check:
•Bulb socket (for continuity)
(with the pocket tester)
No continuity → Replace.
NOTE:
Check each bulb socket for continuity in the 
same manner as described in the bulb section; 
however, note the following.



 
 
 








 
 



 
 



 
 







a. Install a good bulb into the bulb socket.
b. Connect the pocket tester probes to the re-
spective leads of the bulb socket.
c. Check the bulb socket for continuity. If any of 
the readings indicate no continuity, replace 
the bulb socket.
         
EAS28000
CHECKING THE FUSES
The following procedure applies to all of the fus-
es.
CAUTION:
EC2C01003
To avoid a short circuit, always turn the main 
switch to “OFF” when checking or replacing 
a fuse.
1. Remove:
•Rider seat
•Left upper side cowling
Refer to “GENERAL CHASSIS” on page 4-1.
2. Check:
•Fuse



 
 
 








 
 



 
 



 
 



 



a. Connect the pocket tester to the fuse and 
check the continuity.
NOTE:
Set the pocket tester selector to “Ω × 1”.
b. If the pocket tester indicates “∞”, replace the 
fuse.
          
3. Replace:
•Blown fuse



 
 
 








 
 



 
 



 
 



 



a. Set the main switch to “OFF”.
b. Install a new fuse of the correct amperage 
rating.
c. Set on the switches to verify if the electrical 
circuit is operational.
d. If the fuse immediately blows again, check 
the electrical circuit.
WARNING
EWA13310
Never use a fuse with an amperage rating 
other than that specified. Improvising or us-
ing a fuse with the wrong amperage rating 
may cause extensive damage to the electri-
 
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
 
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
FusesAmperage 
ratingQ’ty
Main 50 A 1
Ignition 15 A 1
Headlight 15 A 1
Fuel injection system 15 A 1
Left radiator fan motor 15 A 1
Right radiator fan motor 15 A 1
Signaling system 10 A 1
Backup (odometer and 
clock)7.5 A 1
ETV 7.5 A 1
Spare 15 A 1
Spare 15 A 1
Spare 10 A 1
Spare 7.5 A 1 
						

							ELECTRICAL COMPONENTS
8-86
cal system, cause the lighting and ignition 
systems to malfunction and could possibly 
cause a fire.
         
4. Install:
•Left upper side cowling
•Rider seat
Refer to “GENERAL CHASSIS” on page 4-1.
EAS28030
CHECKING AND CHARGING THE BATTERY
WARNING
EWA13290
Batteries generate explosive hydrogen gas 
and contain electrolyte which is made of poi-
sonous and highly caustic sulfuric acid. 
Therefore, always follow these preventive 
measures:
Wear protective eye gear when handling or 
working near batteries.
Charge batteries in a well-ventilated area.
Keep batteries away from fire, sparks or 
open flames (e.g., welding equipment, 
lighted cigarettes).
DO NOT SMOKE when charging or han-
dling batteries.
KEEP BATTERIES AND ELECTROLYTE 
OUT OF REACH OF CHILDREN.
Avoid bodily contact with electrolyte as it 
can cause severe burns or permanent eye 
injury.
FIRST AID IN CASE OF BODILY CONTACT:
EXTERNAL
Skin — Wash with water.
Eyes — Flush with water for 15 minutes and 
get immediate medical attention.
INTERNAL
Drink large quantities of water or milk fol-
lowed with milk of magnesia, beaten egg or 
vegetable oil. Get immediate medical atten-
tion.
CAUTION:
EC2C01024
This is a sealed battery. Never remove the 
sealing caps because the balance between 
cells will not be maintained and battery per-
formance will deteriorate.
Charging time, charging amperage and 
charging voltage for an MF battery are dif-
ferent from those of conventional batteries. 
The MF battery should be charged accord-
ing to the instructions for the charging 
method. If the battery is overcharged, the electrolyte level will drop considerably. 
Therefore, take special care when charging 
the battery.
NOTE:
Since MF batteries are sealed, it is not possible 
to check the charge state of the battery by mea-
suring the specific gravity of the electrolyte. 
Therefore, the charge of the battery has to be 
checked by measuring the voltage at the battery 
terminals.
1. Remove:
•Rider seat
•Fuel tank bracket
Refer to “GENERAL CHASSIS” on page 4-1.
2. Disconnect:
•Battery leads
(from the battery terminals)
CAUTION:
ECA13640
First, disconnect the negative battery lead 
“1”, and then positive battery lead “2”.
3. Remove:
•Battery band
•Battery
4. Check:
•Battery charge



 
 
 








 
 



 
 



 
 



 



a. Connect a pocket tester to the battery termi-
nals.
NOTE:
•The charge state of an MF battery can be 
checked by measuring its open-circuit voltage 
(i.e., the voltage when the positive battery ter-
minal is disconnected).
•No charging is necessary when the open-cir-
cuit voltage equals or exceeds 12.8 V. •Positive tester probe →
positive battery terminal
•Negative tester probe →
negative battery terminal
2
1 
						

							ELECTRICAL COMPONENTS
8-87
b. Check the charge of the battery, as shown in 
the charts and the following example.
         
5. Charge:
•Battery
(refer to the appropriate charging method il-
lustration)
WARNING
EWA13300
Do not quick charge a battery.
CAUTION:
ECA13670
Never remove the MF battery sealing caps.Do not use a high-rate battery charger 
since it forces a high-amperage current 
into the battery quickly and can cause bat-
tery overheating and battery plate damage.
If it is impossible to regulate the charging 
current on the battery charger, be careful 
not to overcharge the battery.
When charging a battery, be sure to remove 
it from the vehicle. (If charging has to be 
done with the battery mounted on the vehi-
cle, disconnect the negative battery lead 
from the battery terminal.)
To reduce the chance of sparks, do not 
plug in the battery charger until the battery 
charger leads are connected to the battery.
Before removing the battery charger lead 
clips from the battery terminals, be sure to 
turn off the battery charger.
Make sure the battery charger lead clips are 
in full contact with the battery terminal and 
that they are not shorted. A corroded bat-
tery charger lead clip may generate heat in 
the contact area and a weak clip spring may 
cause sparks.
If the battery becomes hot to the touch at 
any time during the charging process, dis-
connect the battery charger and let the bat-
tery cool before reconnecting it. Hot 
batteries can explode!
As shown in the following illustration, the 
open-circuit voltage of an MF battery stabi-
lizes about 30 minutes after charging has 
been completed. Therefore, wait 30 min-
utes after charging is completed before 
measuring the open-circuit voltage. Example
Open-circuit voltage = 12.0 V
Charging time = 6.5 hours
Charge of the battery = 20–30%
A. Open-circuit voltage (V)
B. Charging time (hours)
C. Relationship between the open-circuit voltage 
and the charging time at 20 °C (68 °F)
D. These values vary with the temperature, the 
condition of the battery plates, and the 
electrolyte level.
A. Open-circuit voltage (V)
B. Charging condition of the battery (%)
C. Ambient temperature 20 °C (68 °F)
A. Open-circuit voltage (V)
B. Time (minutes)
C. Charging
D. Ambient temperature 20 °C (68 °F)
E. Check the open-circuit voltage.