Yamaha 2007 R6 Service

8
ELECTRICAL SYSTEM
IGNITION SYSTEM......................................................................................... 8-1
CIRCUIT DIAGRAM .................................................................................. 8-1
ENGINE STOPPING DUE TO SIDESTAND OPERATION....................... 8-3
TROUBLESHOOTING .............................................................................. 8-4
ELECTRIC STARTING SYSTEM.................................................................... 8-7
CIRCUIT...

ELECTRICAL COMPONENTS..................................................................... 8-77
CHECKING THE SWITCHES ................................................................. 8-81
CHECKING THE BULBS AND BULB SOCKETS ................................... 8-84
CHECKING THE FUSES ........................................................................ 8-85
CHECKING AND CHARGING THE BATTERY....................................... 8-86
CHECKING THE RELAYS...

IGNITION SYSTEM
8-1
EAS27090
IGNITION SYSTEM
EAS27110
CIRCUIT DIAGRAM
Gy B Gy
B/L
B BL/BB ON
OFF
W W
G/Y L/W
R/W
R/BB Br
B
L
B
LR
RR RR/W L/WYL/RB Y L
B Br YB BB
R/LB
G/W
BrGRG/Y2R/W
Ch
ChB
B
B/L Y/GLP
B/WO/R
W
B/LL/Y
DgB
L
B/L
W/Y
L
B/LW/B
R/YB/GY/B2R/Y
Ch
ChB
B
Dg
DgB
BO
BB
B
B
B
B/G
B/YB Y
Gy/R
B/GB
B/YBL/R L/RB
Y/B1
B/W
Y/L
B/R R/G
BrG/W
L/W2Sb/W
B/YDg
Ch L
B/L
W/RL
W
B/LG/W
O/G
R/LR/BR/LL/BR/LW/L
R/LG/BR/LO/BR/LSb/WR/LBr/B
R/LBr/Y
Gy/GBr/R
R/W
Br/R
Br/R
Br/W
Br/W
O
O
C C
C
C B B A
B
D
D
D
CD A A
B...

IGNITION SYSTEM
8-2
3. Main switch
4. Ignition fuse
6. Main fuse
7. Battery
11.Engine ground
13.Relay unit
16.Neutral switch
17.Sidestand switch
22.ECU (engine control unit)
23.Spark plug
24.Cylinder-#1 ignition coil
25.Cylinder-#2 ignition coil
26.Cylinder-#3 ignition coil
27.Cylinder-#4 ignition coil
40.Crankshaft position sensor
47.Lean angle sensor
64.Engine stop switch 

IGNITION SYSTEM
8-3
ET2C01023
ENGINE STOPPING DUE TO SIDESTAND OPERATION
When the engine is running and the transmission is in gear, the engine will stop if the sidestand is 
moved down. This is because the electric current from the ignition coils does not flow to the ECU when 
both the neutral switch and sidestand switch are set to “OFF”, thereby preventing the spark plugs from 
producing a spark. However, the engine continues to run under the following conditions:
•The transmission is in gear (the...

IGNITION SYSTEM
8-4
EAS27150
TROUBLESHOOTING
The ignition system fails to operate (no spark or intermittent spark).
NOTE:
•Before troubleshooting, remove the following part(s):
1. Rider seat
2. Fuel tank
3. Air filter case
4. Canister (for California only)
5. Side cowlings
6. Bottom cowlings
 
 NG →
OK ↓
 
 NG →
OK ↓
 
 NG →
OK ↓
 
 OK →
NG ↓
 
 NG →
OK ↓
 
 NG →
OK ↓
 
 NG →
OK ↓ 1. Check the fuses.
(Main and ignition)
Refer to “CHECKING THE FUS-
ES” on page 8-85.Replace the fuse(s).
2. Check the...

IGNITION SYSTEM
8-5
 
 NG →
OK ↓
 
 NG →
OK ↓
 
 NG →
OK ↓
 
 NG →
OK ↓
 
 NG →
OK ↓
 
 NG →
OK ↓ 8. Check the engine stop switch.
Refer to “CHECKING THE 
SWITCHES” on page 8-81.Replace the right handlebar switch.
9. Check the neutral switch.
Refer to “CHECKING THE 
SWITCHES” on page 8-81.Replace the neutral switch.
10.Check the sidestand switch.
Refer to “CHECKING THE 
SWITCHES” on page 8-81.Replace the sidestand switch.
11.Check the relay unit (diode).
Refer to “CHECKING THE RELAY 
UNIT (DIODE)” on...

IGNITION SYSTEM
8-6 

ELECTRIC STARTING SYSTEM
8-7
EAS27160
ELECTRIC STARTING SYSTEM
EAS27170
CIRCUIT DIAGRAM
B BL/BB
ON
OFF
WW
G/Y L/W
R/W
R/BB Br
B
L
B
L
R
RR RR/W L/W
YL/RBY L
B
Br Y
B B
B
R/L
BG/W
BrGR
G/Y2R/W
Ch
ChB
B
DgB
R/YB/GY/B2R/Y
Ch
ChB
B
DgL L
Dg
B
B
BBB
B
B
B/G
B/Y
B YB/GBB/YB
L/R L/R
B
B/WR/GBrG/WB/YDg
Ch L
A
E
(BLACK) (GRAY) (GRAY)
L
Y
Y
B
B
B
Y
R
LL
B
B
BB
BB
BB
BBBB
B/Y
Br
WW
Ch
Ch
ChCh
Ch
Br
Br
Y
Y
B
B
Br
Br
Dg
Dg
DgDg
Dg
DgCh
B
RRR
R
R
B
WWWWWWR
RRRR
RB
BBB
Sb
Sb
SbSbL/BL/BR/LB/Y
G/W
R/W
A
A
A
A
A
A
AA...