fuse box YAMAHA YZF-R7 1999 Owners Manual

2 - 29
SPEC
JFuel tank breather hose
KCDI unit
LFall detection switch
MFuse box
NRelay unit
Align the portions of the main
switch lead and left handle-
bar switch lead marked with
white tape with the radiator
bracket at the frame.õFasten the starter cable and wire harness with a plastic band.
‚Fasten the oil level switch lead, speed sensor lead, sidestand
switch lead and stator coil assembly lead with a plastic band.
ëFasten the air filter breather hose, fuel tank overflow hose, clutch
hose and fuel tank breather hose with a plastic band.
ä20 mm (0.79 in)
ìRoute the sidestand switch lead behind the water pump breather
hose.
íRoute the oil level switch lead to the outside of the water pump
breather hose guide.
CABLE ROUTING

2 - 30
SPEC
1Ignition coil
2Throttle position sensor coupler
3Camshaft sensor
4Injector 1 coupler
5Starter motor
6Fuel tank overflow hose
7Fuel pump coupler
8Rectifier/regurator
9Battery
0Turn signal relayAECU
BFuse box
CFall detection switch
DStarter relay
EMain relay
FThrottle stop screw cable
GFuel tank breather hose
HAir filter case breather hose
IIntake air temperature sensor coupler
JInjector 2 sub-lead
CABLE ROUTING

2 - 31
SPEC
KPickup coil lead
LStator coil lead
MSpeed sensor lead
NSidestand switch lead
OOil level switch lead
PCoolant reservoir breather hose
QWire harness
RWire harness lead (to fall detection
switch coupler)
SWire harness lead (to fuse box)
TStarter motor leadUNeutral switch lead
VGround lead
WCoolant temperature sensor coupler
XThrottle cable
Route the wire harness in front of the ignition coils.
õBe sure that there is no slack in the tail/brake light lead
and rear turn signal leads below the rear fender panel.
‚Align the portions of the wire harness, ground lead and
starter motor lead marked with white tape with the lead
holder.
CABLE ROUTING

8 - 1
–+ELEC

ELECTRICAL COMPONENTS
EB800000
ELECTRICAL
ELECTRICAL COMPONENTS
1
Wire harness
2
Main switch
3
Front brake light switch
4
Ignition coils
5
Clutch switch
6
Throttle position sensor
7
Intake air temperature sensor
8
Intake air pressure sensor
9
Atmospheric pressure sensor
0
Turn signal relay
A
Relay unit
B
ECU
C
CDI unit
D
Fuse box
E
Fall detection switch
F
Starter relay
G
Main fuse
H
Main relay
I
Battery
J
Rectifier/regulator
K
Rear brake light switch
L
Neutral switch
M
Speed sensor
N
Sidestand switch
O
Stator coil assembly
P
Oil level switch
Q
Pickup coil
R
Radiator fan
S
Horn
T
Coolant temperature
sender
U
Thermo switch
V
Camshaft sensor
8

8 - 29
–+ELECELECTRONIC FUEL INJECTION SYSTEM
1Main switch
5Battery
6Main fuse
CCamshaft sensor
DThrottle position sensor
EIntake air pressure sensor
FAtmospheric pressure sensor
GIntake air temperature sensor
HCoolant temperature sensor
IPickup coil
JECU
KCylinder #1-injector 1
LCylinder #2-injector 1
MCylinder #3-injector 1
NCylinder #4-injector 1
OCylinder #1-injector 2
PCylinder #2-injector 2
QCylinder #3-injector 2
RCylinder #4-injector 2
XFall detection switch
YSpeed sensor
yFuel pump
zMain relay
}Engine stop switch
ŒElectronic fuel injection system fuse
£ECU fuse
TROUBLESHOOTING
NOTE:
• Before troubleshooting, remove the following part(-s):
1) bottom cowling
2) front cowling
• Troubleshoot with the following special tool(-s).
The condition code is displayed by the tachometer.
Check the condition code list to
identify the faulty part. Refer to
“ELECTRICAL CONTROL SYS-
TEM”.
In diagnosis mode, select the
appropriate diagnosis code to
check the operation of the faulty
part.Check the
wiring.Replace.
Co, diagnosis switch box
90890-03171
Test coupler adapter
90890-03149
Out of specifi-
cationNo good