Yamaha 2007 R6 Service

ELECTRICAL COMPONENTS
8-98
NOTE:
When installing the throttle position sensor (for 
throttle valves), adjust its angle properly. Refer 
to “ADJUSTING THE THROTTLE POSITION 
SENSOR (FOR THROTTLE VALVES)” on page 
7-13.
ET2C01001
CHECKING THE THROTTLE POSITION 
SENSOR (FOR THROTTLE CABLE PULLEY)
1. Remove:
•Throttle position sensor (for throttle cable pul-
ley)
(from the throttle body)
2. Check:
•Throttle position sensor (for throttle cable pul-
ley) maximum resistance
Out of specification → Replace the...

ELECTRICAL COMPONENTS
8-99
d. Check the fuel pump operation.
         
EAS28370
CHECKING THE AIR INDUCTION SYSTEM 
SOLENOID
1. Check:
•Air induction system solenoid resistance
Out of specification → Replace.



 
 
 








 
 



 
 



 
 







a. Disconnect the air induction system solenoid 
coupler from the air induction system sole-
noid.
b. Connect the pocket tester (Ω × 1) to the air in-
duction system solenoid terminal as shown.c. Measure the air induction...

ELECTRICAL COMPONENTS
8-100
EAS28390
CHECKING THE CYLINDER 
IDENTIFICATION SENSOR
1. Remove:
•Timing plate cover
2. Check:
•Cylinder identification sensor output voltage
Out of specification → Replace.



 
 
 








 
 



 
 



 
 







a. Connect the pocket tester (DC 20 V) to the 
cylinder identification sensor coupler (wire 
harness side) as shown.
b. Turn the main switch to “ON”.
c. Rotate the crankshaft.
d. Measure the voltage of white/black and 
black/blue. Turn the crankshaft twice and...

ELECTRICAL COMPONENTS
8-101



 
 
 








 
 



 
 



 
 







a. Connect the pocket tester (Ω × 100) to the air 
temperature sensor terminal as shown.
b. Immerse the air temperature sensor “1” in a 
container filled with water “2”.
NOTE:
Make sure that the air temperature sensor termi-
nals do not get wet.
c. Place a thermometer “3” in the water.
d. Slowly heat the water, then let it cool down to 
the specified temperature.
e. Measure the air temperature sensor resis-
tance.
    ...

9
TROUBLESHOOTING
TROUBLESHOOTING.................................................................................... 9-1
GENERAL INFORMATION ....................................................................... 9-1
STARTING FAILURES ............................................................................. 9-1
INCORRECT ENGINE IDLING SPEED .................................................... 9-1
POOR MEDIUM-AND-HIGH-SPEED PERFORMANCE ........................... 9-2
FAULTY GEAR SHIFTING...

TROUBLESHOOTING
9-1
EAS28450
TROUBLESHOOTING
EAS28460
GENERAL INFORMATION
NOTE:
The following guide for troubleshooting does not 
cover all the possible causes of trouble. It should 
be helpful, however, as a guide to basic trouble-
shooting. Refer to the relative procedure in this 
manual for checks, adjustments, and replace-
ment of parts.
EAS28470
STARTING FAILURES
Engine
1. Cylinder(s) and cylinder head
•Loose spark plug
•Loose cylinder head
•Damaged cylinder head gasket
•Worn or damaged cylinder...

TROUBLESHOOTING
9-2
Electrical system
1. Battery
•Discharged battery
•Faulty battery
2. Spark plug(s)
•Incorrect spark plug gap
•Incorrect spark plug heat range
•Fouled spark plug
•Worn or damaged electrode
•Worn or damaged insulator
3. Ignition coil(s)
•Broken or shorted primary or secondary coils
•Cracked or broken ignition coil
4. Ignition system
•Faulty ECU
•Faulty crankshaft position sensor
•Faulty cylinder identification sensor
EAS28510
POOR MEDIUM-AND-HIGH-SPEED 
PERFORMANCE
Refer to “STARTING...

TROUBLESHOOTING
9-3
2. Engine oil
•Incorrect oil level
•Incorrect oil viscosity
•Inferior oil quality
Cooling system
1. Coolant
•Low coolant level
2. Radiator
•Damaged or leaking radiator
•Faulty radiator cap
•Bent or damaged radiator fin
3. Water pump
•Damaged or faulty water pump
•Thermostat
•Thermostat stays closed
•Oil cooler
•Clogged or damaged oil cooler
•Hose(s) and pipe(s)
•Damaged hose
•Improperly connected hose
•Damaged pipe
•Improperly connected pipe
Fuel system
1. Throttle body(-ies)
•Damaged...

TROUBLESHOOTING
9-4
Rear shock absorber assembly
•Faulty rear shock absorber spring
•Leaking oil or gas
Tire(s)
•Uneven tire pressures (front and rear)
•Incorrect tire pressure
•Uneven tire wear
Wheel(s)
•Incorrect wheel balance
•Deformed cast wheel
•Damaged wheel bearing
•Bent or loose wheel axle
•Excessive wheel runout
Frame
•Bent frame
•Damaged steering head pipe
•Improperly installed bearing race
EAS28710
FAULTY LIGHTING OR SIGNALING SYSTEM
Headlight does not come on
•Wrong headlight bulb
•Too many...

EAS28740
WIRING DIAGRAM
YZFR6V(C) 2006
1. AC magneto
2. Rectifier/regulator
3. Main switch
4. Ignition fuse
5. Backup fuse (odometer and 
clock)
6. Main fuse
7. Battery
8. Starter relay
9. Fuel injection system fuse
10. Starter motor
11. Engine ground
12. ETV fuse
13. Relay unit
14. Starting circuit cut-off relay
15. Fuel pump relay
16. Neutral switch
17. Sidestand switch
18. Fuel pump
19. Fuel sender
20. Throttle position sensor (for 
throttle cable pulley)
21. Throttle position sensor (for 
throttle...