Snowmobile Yamaha FX10X, FX10RTX, FX10RTRX, FX10RTRAX, FX10MTX, FX10MTRX, FX10MTRAX. Manual - part 82

8-22

–

+

ELEC

LIGHTING SYSTEM

LIGHTIN

G

 SYSTEM

CIRC

UIT D

IAGRA

M

R

/W

L/

W

(BLACK)

L/

W

R

/G

R

/W

L/

W

Y

Lg

G

(BLACK)

B

Br

/B

L

R

/WG

/Y

R

/G

R

/L

R

/WL

/R

R

W

Br

Br/L

Y

/R

P

/L

W

/G

R

/G

Br

/L

L

/B

O

Lg

B

G

/Y

L

/R

B

G

/B

R

/Y

Br

/L

R

/B

Gy

/R

O

/G

L

Br

/W

P

G

/W

L

/WR

/W

Gy

P

/W

R

/LC

h

Y

/L

W

L

/Y

B

/L

Y

/W

Y

/GB

/Y

Y

Lg

R

/W

L

/W

Y

/G

Lg

R

/W

L

/W

R

/W

L

/W

R

/G

Ch

Y

G

B

G

/Y

Br

/L

B

/Y

L

/Y

Lg

Y

/R

R

/Y

Gy

O

Gy

/R

O

/G

R

/B

G

/B

L

/B

B

B

L

/R

R

/L

L

Y

W

P

/W

P

G

/W

Br

/W

B

/L

R

/G

P

/L

W

/G

Br

/L

Y

/W

Y

/L

R

/BR

/L

G

/BR

/L

L

/BR

/L

B

B

HI

LO

G

B

Y

Y

G

B

G

B

Y

B

L

B

L

(BLACK)

(BLACK)

B

L/

W

Br

R

/Y

R

/W

Br

/W

Br

R

OFF

ON

START

RUN

STOP

OFF

ON

CLOSE

OPEN

Y

/L

Y

/W

Ch

Y

/WY

/L

B

/L

P

O

/R

B

/W

LW

B

/L

G

L

/R

B

LY

B

L

/W

Lg

G

L

W

/B

G

B

O

/B

L/

BG

/BR

/BR

/L

P

/W

R

/G

Y

B

/L

L

P

R

/YW

/G

Br

/L

(GRAY)

P

/L

L/

B

G

/B

R

/B

R

/L

P

/W

R

/G

Y

B

/L

L

P

/BR

/Y

W

/G

Br

/L

(GRAY)

P

/L

Y

/G

Y

/G

B

/L

Ch

(BLACK)

(BLACK)

B

/Y

B

/Y

G

L/

R

B

L/

R

G

B

L

/Y

Ch

Y

R

/B

R

/W

G

/B

R

/W

G

/B

Y

R

/B

L

/Y

Ch

G

/W

B

/L

B

/L

G

/W

Br

/W

(BLACK)

Br

Br

(BLACK)

R

/W

B

/L

(BLACK)

Gy

Gy

(BLACK)

B

R

/W

(BLACK)

O

R

/W

(BLACK)

Gy

/R

R

/W

(BLACK)

O

/G

R

/LR

/B

(GRA

Y)

R

/LG

/B

(GRA

Y)

R

/LL

/B

(GRA

Y)

B

/L

Y

L

(BLACK)

B

R

/L

R

/G

P

/L

R

/Y

(BLACK)

Br

/L

W

/G

R

/Y

G

/W

B

/L

(DARK GREEN)

Y

/G

B

W

Lg

B

L/R

G

G

L/R

B

(GREEN)

G

G

/B

Ch

Br

P

P

L/R

B

Y/R

B

B

B

Y/R

B

B

(GREEN)

(GRA

Y)

Ch

R

/B

Br

/W

B

/L

(BLACK)

L

(BLACK)

P

/W

B

/L

L

(BLACK)

P

/BB

/L

W

(GRAY)

WW

R

(BLACK)

B

R

R

R

/WG

/BL

/YR

/B

(BLACK)

Ch

Y

WIRE HARNESS

FUEL INJECTION SYSTEM

SUB-WIRE HARNESS

A

WIRE

HARNESS

OIL PRESSURE

SWITCH

SUB-LEAD

B

WIRE

HARNESS

WIRE

HARNESS

TAIL/BRAKE

 LIGHT 

SUB-LEAD

SPEEDOMETER

UNIT SUB-LEAD

C

E

WIRE

HARNESS

REVERSE SWITCH

SUB-WIRE HARNESS

F

WIRE

HARNESS

COOLANT

TEMPERATURE

SENSOR SUB-LEAD

G

L/

R

B

B

L/

R

È

É

ÈÉ

R

Gy

B

B

/L

R

/Y

L

/W

Br

B

Br
R

W

W

W

R

R

O

/B

O

/B

B

L

/W

L

/R

Br

/B

R

/Y

Br

/B

R

/W

L

B

B

R

B

B

Br

R

/W

B

/Y

Lg

Y

/R

Y

/R

B

B

B

Y

/G

R

/G

R

/L

R

/W

L

/R

R

/L

B

R

/Y

G

/W

B/L

B/L

Br/W

R

/Y

Ch

L

L

/W

L

/W

Ch

R

/B

L

/R

G

G

L/

R

B

G

/B

Ch

Ch

Ch

Ch

Lg

B

G

/Y

Br/L

W

W

W

W

R

R

Lg

R

/W

O

R

/W

Gy

/R

R

/W

O

/G

L

Y

B

/L

L

W

B

/L

R

Y

Lg

R

/W

R

/W

R

/W

Y

Y

Y

G

B

L

/Y

Y

/W

Ch

Y

/L

L

/Y

G

/B

R

/B

E

E

R

/B

R

/B

E

R

/B

A

G

/B

A

L

/B

R

/B

G

/B

L

/B

A

L

L

A

Y

Y

L

/R

L

/R

F

Y

/G

Y

/G

B

A

B

/L

B

/L

A

R

/G

R

/G

A

P

/L

P

/L

A

W

/G

W

/G

A

Br

/L

P

/W

B

/L

L

P

/B

B

/L

L

Br

/L

R

/G

P

/L

W

/G

Br

/L

A

R

/Y

A

P

/W

A

P

A

G

/W

G

B

/L

R

/Y

P

/W

P

/B

G

/W

B

/L

G

E

G

/B

L

/Y

G

/B

E

E

B

B

C

B

B

B

P

P

L

/R

B

F

G

G

C

L/

R

L/

R

C

R

/L

R

/L

A

(BLACK)

(BLACK)

Lg

EE

F

G

H

I

J

J

J

K

8

9

0

A

BC

D

1

2

3

4

5

6

7

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

[

\

]

_

a

b

c

d

e

f

g

h

h

i

j

k

l

m

n

o

p

q

r

8-23

–

+

ELEC

LIGHTING SYSTEM

LIGHTING SYSTEM

CIRCUIT DIAGRAM

1 Rectifier/regulator
2 AC magneto
4 Main switch
5 Main fuse
6 Load control relay
7 Battery
B Engine stop switch
H ECU (engine control unit)
Z Frame ground
_ Tail/brake light
d Multi-function meter
g High beam indicator light
h Headlight
i Headlight relay
j Headlight beam switch
n Ignition fuse
p Signal fuse
q Headlight fuse

È FX10MT/FX10MTR/

FX10MTRA

8-24

–

+

ELEC

LIGHTING SYSTEM

TROUBLESHOOTING

Check the headlight bulb(s).

Check the main fuse, ignition fuse, and headlight 
fuse.
Refer to “FUSE INSPECTION” in CHAPTER 2.

Check the battery.
Refer to “BATTERY INSPECTION” in CHAPTER 2.

Check the stator coil.
Refer to “CHARGING SYSTEM”.

Check the engine stop switch and main switch.
Refer to “IGNITION SYSTEM”.

Check the headlight beam switch.

Check the headlight relay.

Check the load control relay.

Check the lighting system wiring.
Refer to “CIRCUIT DIAGRAM”.

Correct the connection and/or replace the 
speedometer unit, rectifier/regulator, and/or ECU.

HEADLIGHT AND/OR HIGH BEAM INDICATOR LIGHT DO NOT COME ON.

OK

NO CONTINUITY

Replace the bulb(s).

OK

FAULTY

Replace the main fuse, ignition fuse, and/or head-
light fuse.

OK

OUT OF SPECIFICATION

Replace or charge the battery.
Refer to “BATTERY INSPECTION” in CHAPTER 
2.

OK

OUT OF SPECIFICATION

Replace the stator coil.

OK

FAULTY

Replace the right handlebar switch and/or main 
switch.

OK

FAULTY

Replace the left handlebar switch.

OK

FAULTY

Replace the headlight relay.

OK

FAULTY

Replace the load control relay.

OK

FAULTY

Properly connect or repair the lighting system wir-
ing.

8-25

–

+

ELEC

LIGHTING SYSTEM

Check the main fuse and ignition fuse.
Refer to “FUSE INSPECTION” in CHAPTER 2.

Check the battery.
Refer to “BATTERY INSPECTION” in CHAPTER 2.

Check the engine stop switch and main switch.
Refer to “IGNITION SYSTEM”.

Check the lighting system wiring.
Refer to “CIRCUIT DIAGRAM”.

Correct the connection and/or replace the 
speedometer unit.

METER LIGHT DO NOT COME ON.

OK

FAULTY

Replace the main fuse and/or ignition fuse.

OK

OUT OF SPECIFICATION

Replace or charge the battery.
Refer to “BATTERY INSPECTION” in CHAPTER 
2.

OK

FAULTY

Replace the right handlebar switch and/or main 
switch.

OK

FAULTY

Properly connect or repair the lighting system wir-
ing.