2005 YAMAHA VX110 Service Manual

7-6
E
–+ELECFUSE BOX
1
2
6
5
4
3
1Positive battery lead
2Starter motor lead (white tape)
3Starter relay
4Wiring harness (black)
5Wiring harness (brown)
6Wiring harness (red)
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7-7
E
–+ELECECM AND RECTIFIER/REGULATOR
ECM AND RECTIFIER/REGULATOR
EXPLODED DIAGRAM
REMOVAL AND INSTALLATION CHART
Step Procedure/Part name Q’ty Service points
ECM AND RECTIFIER/
REGULATOR REMOVALFollow the left “Step” for removal.
1 Wiring harness 1
NOTE:
Disconnect all couplers.
2Bolt 2
3 Rectifier/regulator 1
4Bolt 4
5ECM 1
6 Grommet 4
7 Collar 4
2nd 18 N • m (1.8 kgf • m, 13 ft • Ib) 1st 8.8 N • m (0.88 kgf • m, 6.4 ft • Ib)
8 × 35 mm
6 × 30 mm
4.0 N • m (0.4 kgf • m, 2.9 ft • Ib)
6 × 30 mm
4.0 N • m (0.4 kgf • m, 2.9 ft • Ib)
LT
572
LT
LT
242
LT
LT
242
LT
LT
572
LT
LT
572
LT
4
6
5
12
239 10
8 10 8
11
11
7
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7-8
E
–+ELECECM AND RECTIFIER/REGULATOR
EXPLODED DIAGRAM
Step Procedure/Part name Q’ty Service points
8Bolt 2
9Bracket 1
10 Grommet 2
11 Collar 2
Reverse the removal steps for installation.
2nd 18 N • m (1.8 kgf • m, 13 ft • Ib) 1st 8.8 N • m (0.88 kgf • m, 6.4 ft • Ib)
8 × 35 mm
6 × 30 mm
4.0 N • m (0.4 kgf • m, 2.9 ft • Ib)
6 × 30 mm
4.0 N • m (0.4 kgf • m, 2.9 ft • Ib)
LT
572
LT
LT
242
LT
LT
242
LT
LT
572
LT
LT
572
LT
4
6
5
12
239 10
8 10 8
11
11
7
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7-9
E
–+ELECELECTRICAL ANALYSIS
ELECTRICAL ANALYSIS
INSPECTION
CAUTION:
All measuring instruments should be han-
dled with special care. Damaged or mis-
handled instruments will not measure
properly.
On an instrument powered by dry batter-
ies, check the battery’s voltage periodi-
cally and replace the batteries if
necessary.
Digital tester
NOTE:
Throughout this chapter the part numbers of
the specified digital testers have been omitted.
Refer to the following part numbers.
NOTE:
“” indicates a continuity of electricity;
i.e., a closed circuit at the respective switch
position.
Digital multimeter:
YU-34899-A
Digital circuit tester:
90890-03174
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7-10
E
–+ELECELECTRICAL ANALYSIS
Low resistance measurement
NOTE:
When measuring a resistance of 10 Ω
or less
using a digital tester, the correct measure-
ment cannot be obtained because of the
tester’s internal resistance.
To obtain the correct value, subtract the
internal resistance from the displayed mea-
surement.
The internal resistance of the tester can be
obtained by connecting both of its terminals.
Correct value =
Displayed measurement –
Internal resistance
Peak voltage measurement
NOTE:
When checking the condition of the ignition
system it is vital to know the peak voltage.
Cranking speed is dependant on many fac-
tors (e.g., fouled or weak spark plugs, a
weak battery). If one of these is defective,
the peak voltage will be lower than specifica-
tion.
If the peak voltage measurement is not
within specification the engine will not oper-
ate properly.
A low peak voltage will also cause compo-
nents to prematurely wear.
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7-11
E
–+ELECELECTRICAL ANALYSIS
Peak voltage adapter
NOTE:
Throughout this chapter the part numbers of
the specified peak voltage adapters have
been omitted. Refer to the following part
numbers.
The peak voltage adapter should be used
with a digital tester.
When measuring the peak voltage, connect
the peak voltage adapter to the digital circuit
tester and switch the selector to the DC volt-
age mode.
NOTE:
Make sure that the adapter leads are prop-
erly installed in the digital circuit tester.
Make sure that the positive pin (the “+” mark
facing up as shown) on the adapter is
installed into the positive terminal of the
tester.
The test harness is needed for the following
tests.
È Voltage measurement
É Peak voltage measurement
Test harness
NOTE:
If the lighting coil and pickup coil(s) are mea-
sured unloaded, disconnect the test harness
on the output side coupler.
Peak voltage adapter:
YU-39991
Peak voltage adapter B:
90890-03172
Checking steps:
Disconnect the coupler connections.
Connect the test harness between the
couplers.
Connect the tester terminals to the termi-
nals which are being checked.
Run the engine and observe the mea-
surement.È
É
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7-12
E
–+ELECIGNITION SYSTEM
IGNITION SYSTEM
WIRING DIAGRAM
10A
10A
3A
30A20A
WBrBRFREE
PUSHBWFREE
PUSH
Br BrFREE
PUSH
BW
W
BrBrBrBrR
W
B/W
B/O
B/O
B/O
B/R
P/R
P/R
W/B
P/W
P/W
B/O
L/B
B/WB/R
B/OP/W
P/R
W
W
WLR
Y
G
O
O
W
GG
BW
GG
O
OLG
W
Y
W
G/O
W/BR/Y
Y/G
BL
PBWP/W
B/GB/Y
Y/WL/RB/RB/W
B
B
BBP
P
P
BBP
RR
BBR
R/Y
B/OL/BB/OL/B
B/G
G/OB/OG/O
P/W
B/OB/YB/YR/Y
R/Y
R/Y
R/YB/YR/Y
R/Y
B/O
B/RR/Y
R/Y
R/YY/W
Y/GL/R
Y
P
P
O
O R
R
R
BB
BrRB/O
BBr
B/W
Y BrL R B
R
GB
R/YBBr
4
0 98
B
B B
B
H
I JK LM NOQ
PR
3
5
67 2 1
A
A A
A
C
D
E
F
G
1Battery
2Fuse (30 A)
3Fuse (20 A)
4Fuse (3 A)
5Fuse (10 A)
6Fuse (10 A)
7Starter relay
8Main and fuel pump
relay9Electronic control
throttle valve relay
0Slant detection switch
AIgnition coil
BSpark plug
CCam position sensor
DEngine temperature
sensor
EThermoswitch
(engine)FThermoswitch
(exhaust)
GOil pressure switch
HRemote control unit
(Deluxe model only)
IAntenna
(Deluxe model only)
JECM
KRectifier/regulatorLThrottle body assem-
bly
MAccelerator position
sensor
NPickup coil
OLighting coil
PStart switch
QEngine stop switch
REngine shut-off switch
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7-13
E
–+ELECIGNITION SYSTEM
WIRING DIAGRAM
10A
10A
3A
30A20A
WBrBRFREE
PUSHBWFREE
PUSH
Br BrFREE
PUSH
BW
W
BrBrBrBrR
W
B/W
B/O
B/O
B/O
B/R
P/R
P/R
W/B
P/W
P/W
B/O
L/B
B/WB/R
B/OP/W
P/R
W
W
WLR
Y
G
O
O
W
GG
BW
GG
O
OLG
W
Y
W
G/O
W/BR/Y
Y/G
BL
PBWP/W
B/GB/Y
Y/WL/RB/RB/W
B
B
BBP
P
P
BBP
RR
BBR
R/Y
B/OL/BB/OL/B
B/G
G/OB/OG/O
P/W
B/OB/YB/YR/Y
R/Y
R/Y
R/YB/YR/Y
R/Y
B/O
B/RR/Y
R/Y
R/YY/W
Y/GL/R
Y
P
P
O
O R
R
R
BB
BrRB/O
BBr
B/W
Y BrL R B
R
GB
R/YBBr
4
0 98
B
B B
B
H
I JK LM NOQ
PR
3
5
67 2 1
A
A A
A
C
D
E
F
G
B: Black
Br : Brown
G: Green
L: Blue
O : Orange
P: Pink
R: Red
W: White
Y : YellowB/G : Black/green
B/O : Black/orange
B/R : Black/red
B/W : Black/white
B/Y : Black/yellow
G/O : Green/orange
L/B : Blue/black
L/R : Blue/red
P/R : Pink/redP/W : Pink/white
R/Y : Red/yellow
W/B : White/black
Y/G : Yellow/green
Y/W : Yellow/white
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