Yamaha 2007 R6 Service

SIGNALING SYSTEM
8-28 

COOLING SYSTEM
8-29
EAS27300
COOLING SYSTEM
EAS27310
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 E...

COOLING SYSTEM
8-30
3. Main switch
4. Ignition fuse
6. Main fuse
7. Battery
11.Engine ground
22.ECU (engine control unit)
42.Coolant temperature sensor
87.Radiator fan motor relay
88.Right radiator fan motor fuse
89.Left radiator fan motor fuse
90.Right radiator fan motor
91.Left radiator fan motor 

COOLING SYSTEM
8-31
EAS27320
TROUBLESHOOTING
NOTE:
•Before troubleshooting, remove the following part(s):
1. Rider seat
2. Fuel tank
3. Side cowlings
 
 NG →
OK ↓
 
 NG →
OK ↓
 
 NG →
OK ↓
 
 NG →
OK ↓
 
 NG →
OK ↓
 
 NG →
OK ↓
 
 NG →
OK ↓ 1. Check the fuses.
(Main, ignition and radiator fan mo-
tor)
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...

COOLING SYSTEM
8-32 

FUEL INJECTION SYSTEM
8-33
EAS27330
FUEL INJECTION SYSTEM
EAS27340
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...

FUEL INJECTION SYSTEM
8-34
3. Main switch
4. Ignition fuse
5. Backup fuse (odometer and clock)
6. Main fuse
7. Battery
9. Fuel injection system fuse
11.Engine ground
12.ETV fuse
13.Relay unit
15.Fuel pump relay
16.Neutral switch
17.Sidestand switch
18.Fuel pump
20.Throttle position sensor (for throttle cable 
pulley)
21.Throttle position sensor (for throttle valves)
22.ECU (engine control unit)
23.Spark plug
24.Cylinder-#1 ignition coil
25.Cylinder-#2 ignition coil
26.Cylinder-#3 ignition coil...

FUEL INJECTION SYSTEM
8-35
EAS27350
ECU SELF-DIAGNOSTIC FUNCTION
The ECU is equipped with a self-diagnostic function in order to ensure that the fuel injection system is 
operating normally. If this function detects a malfunction in the system, it immediately operates the en-
gine under substitute characteristics and illuminates the engine trouble warning light to alert the rider 
that a malfunction has occurred in the system. Once a malfunction has been detected, a fault code is 
stored in the memory of...

FUEL INJECTION SYSTEM
8-36
EAS27380
SELF-DIAGNOSTIC FUNCTION TABLE
If the ECU detects an abnormal signal from a sensor while the vehicle is being driven, the ECU illumi-
nates the engine trouble warning light and provides the engine with alternate operating instructions that 
are appropriate for the type of malfunction.
When an abnormal signal is received from a sensor, the ECU processes the specified values that are 
programmed for each sensor in order to provide the engine with alternate operating...

FUEL INJECTION SYSTEM
8-37
18EXUP servo motor
(stuck)EXUP servo motor is stuck. Able Able
19Sidestand switch
(open circuit in the 
wire to the ECU)Open circuit is detected in the in-
put line from the sidestand switch 
to the ECU.Unable Unable
20Intake air pressure 
sensor or atmospher-
ic pressure sensorWhen the main switch is turned to 
“ON”, the atmospheric pressure 
sensor voltage and intake air pres-
sure sensor voltage differ greatly.Able Able
21Coolant temperature 
sensor 
(open or short...