Yamaha 2007 R6 Service

							ELECTRIC STARTING SYSTEM
8-8
3. Main switch
4. Ignition fuse
6. Main fuse
7. Battery
8. Starter relay
10.Starter motor
11.Engine ground
13.Relay unit
14.Starting circuit cut-off relay
16.Neutral switch
17.Sidestand switch
64.Engine stop switch
65.Start switch
70.Clutch switch 
						

							ELECTRIC STARTING SYSTEM
8-9
EAS27180
STARTING CIRCUIT CUT-OFF SYSTEM OPERATION
If the engine stop switch is set to “” and the main switch is set to “ON” (both switches are closed), the 
starter motor can only operate if at least one of the following conditions is met:
•The transmission is in neutral (the neutral switch is closed).
•The clutch lever is pulled to the handlebar (the clutch switch is closed) and the sidestand is up (the 
sidestand switch is closed).
The starting circuit cut-off relay prevents the starter motor from operating when neither of these condi-
tions has been met. In this instance, the starting circuit cut-off relay is open so current cannot reach the 
starter motor. When at least one of the above conditions has been met the starting circuit cut-off relay 
is closed and the engine can be started by pressing the start switch. 
						

							ELECTRIC STARTING SYSTEM
8-10
a. WHEN THE TRANSMISSION IS IN 
NEUTRAL
b. WHEN THE SIDESTAND IS UP AND THE 
CLUTCH LEVER IS PULLED TO THE 
HANDLEBAR
1. Battery
2. Main fuse
3. Main switch
4. Ignition fuse
5. Engine stop switch
6. Relay unit (starting circuit cut-off relay)
7. Relay unit (diode)
8. Clutch switch
9. Sidestand switch
10. Neutral switch
11. Start switch
12. Starter relay
13. Starter motor
14. Engine ground 
						

							ELECTRIC STARTING SYSTEM
8-11
EAS27190
TROUBLESHOOTING
The starter motor fails to turn.
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. Thermostat
 
 NG →
OK ↓
 
 NG →
OK ↓
 
 OK →
NG ↓
 
 NG →
OK ↓
 
 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 battery.
Refer to “CHECKING AND 
CHARGING THE BATTERY” on 
page 8-86.•Clean the battery terminals.
•Recharge or replace the battery.
3. Check the starter motor operation.
Refer to “CHECKING THE START-
ER MOTOR OPERATION” on page 
8-93.Starter motor is OK. Perform the electric 
starting system troubleshooting, starting 
with step 5.
4. Check the starter motor.
Refer to “CHECKING THE START-
ER MOTOR” on page 5-35.Repair or replace the starter motor.
5. Check the relay unit (starting circuit 
cut-off relay).
Refer to “CHECKING THE RE-
LAYS” on page 8-89.Replace the relay unit.
6. Check the relay unit (diode).
Refer to “CHECKING THE RELAY 
UNIT (DIODE)” on page 8-91.Replace the relay unit.
7. Check the starter relay.
Refer to “CHECKING THE RE-
LAYS” on page 8-89.Replace the starter relay. 
						

							ELECTRIC STARTING SYSTEM
8-12
 
 NG →
OK ↓
 
 NG →
OK ↓
 
 NG →
OK ↓
 
 NG →
OK ↓
 
 NG →
OK ↓
 
 NG →
OK ↓
 
 NG →
OK ↓ 8. Check the main switch.
Refer to “CHECKING THE 
SWITCHES” on page 8-81.Replace the main switch.
9. Check the engine stop switch.
Refer to “CHECKING THE 
SWITCHES” on page 8-81.Replace the right handlebar switch.
10.Check the neutral switch.
Refer to “CHECKING THE 
SWITCHES” on page 8-81.Replace the neutral switch.
11.Check the sidestand switch.
Refer to “CHECKING THE 
SWITCHES” on page 8-81.Replace the sidestand switch.
12.Check the clutch switch.
Refer to “CHECKING THE 
SWITCHES” on page 8-81.Replace the clutch switch.
13.Check the start switch.
Refer to “CHECKING THE 
SWITCHES” on page 8-81.Replace the right handlebar switch.
14.Check the entire starting system’s 
wiring.
Refer to “CIRCUIT DIAGRAM” on 
page 8-7.Properly connect or repair the starting sys-
tem’s wiring.
The starting system circuit is OK. 
						

							CHARGING SYSTEM
8-13
EAS27200
CHARGING SYSTEM
EAS27210
CIRCUIT DIAGRAM
ON
OFF
G/Y L/W
R/W
R/BB Br R
RR R
R/W L/W
B
Br
Br
R
RR
R
R
B
WWW
WWWR
RRR
R
B
BBB
A
R/WL/W2R/B
G/Y
L/W
(BLACK)
R/W
L/W3
R/W
(BLUE)
(BLUE)
R/W
R/GBr/L
Br/L
L/YL/B2
R/W
G/YL/W2R/WR/BBBr WWW
Br/L
Br/L
Br
R/YR/Y
R/Y WWW
BR
WWW
63 62
64 6513 12
6 2
5
4 31
89 7
10 11
85
86(RED) L/YL/B2(RED)L/Y L/B
R
Br/LR
Br/L 
						

							CHARGING SYSTEM
8-14
1. AC magneto
2. Rectifier/regulator
6. Main fuse
7. Battery
11.Engine ground 
						

							CHARGING SYSTEM
8-15
EAS27230
TROUBLESHOOTING
The battery is not being charged.
NOTE:
•Before troubleshooting, remove the following part(s):
1. Rider seat
2. Fuel tank
3. Bottom cowlings
 
 NG →
OK ↓
 
 NG →
OK ↓
 
 NG →
OK ↓
 
 NG →
OK ↓
 
 NG →
OK ↓ 1. Check the fuse.
(Main)
Refer to “CHECKING THE FUS-
ES” on page 8-85.Replace the fuse.
2. Check the battery.
Refer to “CHECKING AND 
CHARGING THE BATTERY” on 
page 8-86.•Clean the battery terminals.
•Recharge or replace the battery.
3. Check the stator coil.
Refer to “CHECKING THE STATOR 
COIL” on page 8-94.•Replace the stator coil assembly.
4. Check the rectifier/regulator.
Refer to “CHECKING THE RECTI-
FIER/REGULATOR” on page 8-94.Replace the rectifier/regulator.
5. Check the entire charging system’s 
wiring.
Refer to “CIRCUIT DIAGRAM” on 
page 8-13.Properly connect or repair the charging 
system’s wiring.
The charging system circuit is OK. 
						

							CHARGING SYSTEM
8-16 
						

							LIGHTING SYSTEM
8-17
EAS27240
LIGHTING SYSTEM
EAS27250
CIRCUIT DIAGRAM
(RED) L/YL/B2
(RED)L/Y L/BR
Br/LR
Br/L
LL
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 E
C
CBr/B
FF F F D D DD
C CF C
O/G
O/GGy/GGy/R
Gy/RGy/G
R/B
R/B
Lg/RY/BR/BR/BR/B
R/BR/BR/B
G/Y2Lg/R
W/R
W/RW/L
W/L
R/W
R/W
R/W
Y/B2
B3B3BB
L
W/RB/R B/G LB/L
 B/LB/RB/G
B/RB/G
(BLACK)(BLACK) (BLACK)
(GRAY)
(BLACK)(GRAY)
(GRAY) (GRAY)(GRAY) (GRAY) (GRAY)
(GRAY)
(GRAY)
(GRAY)(BLACK)
(BLACK)
(BLACK)
(BLACK)Y/R
Lg/RY/R
R/LR/LR/LR/LR/LR/LR/L
L/BG/BR/B
R/BG/BL/B
R/LD
R/LR/LR/LR/L
Br/BBr/YSb/WO/B
O/BSb/WBr/Y
L
L
L
YYB
B
B
Y
RLL
BB
B
B
BB
L
L
LL
BB
LG
L
L
L
P
P
P
B
B
B
B
P
B/L
B/L
B/Y
B/LB/L
B/LGy
Br
WW
Ch
Ch
Ch
Ch
Ch
Br
Br
Y
YB
B
Br
Br
Dg
Dg
DgDg
Dg
Dg
Ch
GyY/G
LB/L
B/L
B/L
B/L
B/L
B/L
B/L
B
R
R
RR
R
B
WWW
WWW
RR
RR
R
R
B
B
B
B
SbSbSbSb
L/BL/BR/L
B/Y
Y/G
W/Y
W/B
P/W
P/W
P/W
B/W
Y/B1L/W2
G/W
L/W2L/W2
Sb/WSb/WSb/WY/B1
B/W
R/WA
A A
A
A
AAAB
BR/GG/W
R/W
L/W2
R/B
G/Y
B/Y
R/Y
B/YB/G
L/R
L/R
L/RL/R
L/R
L/Y2
L/RL/R
L/W
Br/WBr/W
G/WR/GB/R
W/B
W/YW/BP/WG/W
G/W
PB/LLB/LLP/W
R/LR/BR/B
L/YY/BY/LB/YP/B
Lg
P/B
R
LLLG
LgR/WL/WW
W
W/R
W/R
B/L
B/L
R/L
B/L
B/L
G L
L
(BLACK) (BLACK)
Dg Y
Br/WR/Y
ChL/YBB/YBr
(BLUE)
(DARK GREEN) (BLUE)L/Y
R/BL/W
R/W
L/W3
L/W2
R/W
Sb/W
L/Y2
Br/WBr
DgB
(BLACK) (BLACK) (GRAY) (GRAY)
(BLACK)(BLACK)
(BLACK) (BLACK)(BLACK)
(DARK GREEN) (BLACK)(BLACK)
Dg Y
Br/WR/Y
ChL/Y2BB/YBr (BROWN)
(BLACK) (BLACK) (BLACK)(BLACK)
(BLACK)
(BLUE)(BLUE) (BLUE)
(BLUE)
(BLUE)
(BLUE)(DARK BLUE)
(BLACK) (BROWN)
R/W
R/G
Br/L
Br/L
L/YL/B2
R/W
G/YL/W2R/WR/BBBr WWW
Br/LBr/L
BrR/Y
R/YR/Y
R/W
B/GB/GB/Y
G/Y2
Y/B2Y/B2
Br/GBr/G
Br/G
R/YR/Y
B
L
B
L
LL
B/LR/L
R/LL/W2R/B L/W
R
Sb/WB/Y Sb
L/YL/BR/W
L/W3 L/Y2
Gy/G
Y/B1
Gy/R
B
BP/B
W/YRO
O/GBr/RR/L Lg B/Y
L/B2Y/R
G/Y2 Y/B2 Lg/R
Lg L/W
R/B
L/B
G/B
L/YO/BB3
B3R/WY/GW/L
Br/YSb/W
Br/B
LW
B/G
B/LB/LY/L
G/W
R/W P/W
Br/W
W/RW/RW/BGB/RGyLL
PB/L R/LB
L P/BGy/G2
Gy/G2
B
W
WWW
Gy/G2
B
Br/WB/L
BR
WWW
L/B2
L/R
L/R
BY/L
Y/L
24
25
26
27 23
2223
23
23
36
37
3835 34 33 32 31 30 29 28
46 42 4139
40
4320
21
44
45 60 60 59 58 57 56 55 54
61
76 75 74 7366
71 67 63 62
64 65
81
70
72
77 78 79 80 8268 6952 51 50 49 48 17
1615 13
14 12
6 2
5
4 31
89 7
10 11
85
83
84
90 88 89
9187 8618
19
53
47
W/L
R/L
R/L
Sb/WSb/W
W/L
Sb Sb
(BLACK) (BLACK)
Br/Y
Br/BBr/Y
Br/B
Gy/G2G/WB/W
Y
R/Y
L/R
B/WL/R
Sb/W
G/WSb/W
DgDg
Ch Ch BY
B
YB2 YB2R/W
R/Y
Br
HEADLIGHT SUB-WIRE-HARNESS
HEADLIGHT SUB-
WIRE-HARNESS
WIRE HARNESS
B
WIRE HARNESS
SUB-
WIRE-HARNESS1C
WIRE HARNESS
SUB-
WIRE-HARNESS2D
WIRE HARNESS
NEUTRAL SWITCH SUB
-WIRE-HARNESSE
WIRE HARNESS
SUB-WIRE-HARNESS3F
WIRE HARNESS
A
W/BBr/R
R/W
O/GR/B
B/LGy/R
W/BB/LGy/R
Gy/G
O/GGy/G
O
Br/R
R/WO
LR/BL
L/BB/LR/LR/B G/BP/WO/BLP
L/BB/LR/BG/BP/WLR/LO/BP
L/W2Br/WR/GY/L
B/LB/RY/B1
Y/B1
Br/WR/G
B/L
Y/LWL/W2
(RED) L/YL/B2
(RED)L/Y L/BR
Br/LR
Br/L