2006 YAMAHA WR 450F display

2 - 29
SPECCABLE ROUTING DIAGRAM
ÒPass the speed sensor lead
through the guide on the out-
side of the front fork.
ÓPass the start switch lead and
multi-function display lead (on
the wire harness side) above
the multi-function display lead
(on the side of the multi-func-
tion display lead) and speed
sensor lead, and then to the
right of the chassis.
4
5
Î
Ê Ó
A
B
F-FE-E
C
D
A
D
7
7
Ò ËA
12
È32
É
6
Ê
6
8
Ì0
9
ËÑ C
BÏ
2
Ð 8
8
1Í
4
5
4
5B2
C
DC BB A
F F
EE
EE
Ë
2

6 - 1
–+ELECELECTRICAL COMPONENTS AND WIRING DIAGRAM
EC600000
ELECTRICAL
EC610000
ELECTRICAL COMPONENTS AND WIRING DIAGRAM
EC611000
ELECTRICAL COMPONENTS
1Headlight
2Multi-function display
3“ENGINE STOP” but-
ton
4Clutch switch
5Diode
6Starter relay diode
7TPS (throttle posi-
tion sensor)
8Starter relay
9Fuse
0Starting circuit cut-off
relayATaillight
BNeutral switch
CStarter motor
DAC magneto
ERectifier/regulator
FIgnition coil
GSpark plug
HStart switch
IMain switch
JCDI unit
KSpeed sensor
LBatteryCOLOR CODE
B ...................... Black
Br ..................... Brown
Ch .................... Chocolate
Dg .................... Dark green
Gy .................... Gray
L....................... Blue
O ...................... Orange
R ...................... Red
Sb .................... Sky blue
W ..................... White
EC612000
WIRING DIAGRAM
FGH
I
J
K
L
1 234
56
789
0A
B C
D E
B/L
W
W
R
BR/BBr
R
BR/BBr
R
Y
Y
L/R/BBB
SbL/W
L/YBBB
WY
RY
R
LY
B
YLB/L
B
B
ON
OFF
10A
BB
OFF
START
R-BrL/W
B
BrL/W
BrL/W
L/B
-Y
Y
B
LY
B
L/WSb
B/WBBB
W/R/W
R/
BGyBrL/W
ON
STOP
O
LSbB/L
W RBrB/W
L
/
BGyWR
/B
B O
L/YSbL/R
R W
Y W
Y W
Y
L B
B
B
RRR/B
B Br B
B B B B
L/W
R
R
R R B
R
BrBr
L/W L/
W
Br B
L/B
L/B
L/R

Br
R/B
L/B L
/W
B/W
WW
/RW
RO
L
Y
ELO
B
L
Y
B/LSb*1
Sb
*2B/W
B
B
L/R L/Y L/Y
B
SbSbL/W
B
Gy
SbBB/LYO
L
*2
O B
L YL/W
B/L
*1
D
E
CI
6
H4 5
B3J
K
2FG
7
8L9
1A
*2
*1
W
B
R/W
Ch
Dg
Y
B BrRW
WRB/W
SIGNAL
+
Backup
SLCT1
SLCT2
RST
GND
BrR/WB
B
R/WBr
WRB/W
R B
W
ChDgYB
B/WWRB/WWR
0
R
W
W W
L/WB/L
Y B
RB
B
L
L
*1: For USA
*2: Except for USA
Y ...................... Yellow
B/L ................... Black/Blue
B/W .................. Black/White
L/B ................... Blue/Black
L/R ................... Blue/Red
L/Y ................... Blue/Yellow
L/W .................. Blue/White
R/B................... Red/Black
R/W.................. Red/White

–+ELEC
6 - 26
SIGNALING SYSTEM
SIGNALING SYSTEM
INSPECTION STEPS
If the speedometer will not operate, use the following inspection steps.
*1 marked: Refer to “BATTERY INSPECTION AND CHARGING” section in the CHAPTER 3.
NOTE:
•Remove the following parts before inspection.
1) Headlight
•Use the following special tools in this inspection.
Pocket tester:
YU-3112-C/90890-03112
*1 Check battery. Recharge or replace.
Check each coupler and
wire connection.Repair or replace.
Check multi-function dis-
play.Input voltage Replace wire harness.
Output voltageReplace multi-func-
tion display.
Check speed sensor. Replace.
OK
OK
OK
No good
No good
No good No good
No good

6 - 27
–+ELECSIGNALING SYSTEM
COUPLERS AND LEADS CONNECTION
INSPECTION
1. Check:
•Couplers and leads connection
Rust/dust/looseness/short-circuit →
Repair or replace.
MULTI-FUNCTION DISPLAY INPUT
VOLTAGE INSPECTION
1. Disconnect the multi-function display cou-
pler.
2. Set the main switch to “ON”.
3. Measure:
•Multi-function display input voltage
Out of specification → Replace wire har-
ness.
CAUTION:
Make sure that a short-circuit does not
develop between the terminals because it
may cause damage to electrical compo-
nents.Tester (+) lead
→ Brown lead
1
Tester (–) lead
→ Black lead
2
Multi-function dis-
play input voltageTester selec-
tor position
10 V or more DCV-20
MULTI-FUNCTION DISPLAY OUTPUT
VOLTAGE INSPECTION
1. Disconnect the multi-function display cou-
pler.
2. Set the main switch to “ON”.

6 - 28
–+ELECSIGNALING SYSTEM
3. Measure:
•Multi-function display output voltage
Out of specification → Replace multi-
function display.
CAUTION:
Make sure that a short-circuit does not
develop between the terminals because it
may cause damage to electrical compo-
nents.Tester (+) lead
→ Red lead
1
Tester (–) lead
→ Black/White lead
2
Multi-function dis-
play output voltageTester selec-
tor position
4.5 V or more DCV-20
SPEED SENSOR OUTPUT VOLTAGE
INSPECTION
1. Insert the thin electric conductors 1 (lead)
into the speed sensor coupler 2, as
shown, and connect the tester to them.
CAUTION:
Do not insert the electric conductors
more than required because it may
reduce the waterproof function of the
coupler.
Make sure that a short-circuit does not
develop between the terminals because it
may cause damage to electrical compo-
nents.
2. Set the main switch to “ON”. Tester (+) lead
→ White lead
3
Tester (–) lead
→ Black lead
4