2004 YAMAHA TT600RE stop start

LIGHT SYSTEM
7-46
ELEC
LIGHT SYSTEM INSPECTION NOTE:
To proceed to the control of the light system, start the engine and then stop it by the emergency engine
stop switch. In this way the light relay remains excited and it is possible to check the light system.
1. The front headlight and the high beam light fail to turn on.
CONTINUITY
DISCONTINUITY
Replace the bulb and/or the bulbholder.1. Bulb and bulbholder.
•Check the continuity of the bulb and bulb-
holder.
Refer to “BULB INSPECTION” section.
2. Voltage.
•Connect the pocket tester (DC 20V) to the
front headlight connectors and the high
beam switch.
Headlight: Tester terminal (+) ➔
Green (2) or Yellow (1) cable
Tester terminal (–) ➔Black cable (3)
High beam light: Tester terminal (+) ➔Yellow cable (4)
Tester terminal (–) ➔Black cable (5)
[A] When the lights switch (commutator) is at
position “HI”.
[B] When the lights switch (commutator) is at position “LO”.
OUT OF SPECIFICATION
The circuit from the main switch to the bulbhol-
der connector is defective. Repair.
A
B
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FAILURE TO START/
DIFFICULTIES IN STARTING
8-2
TRBL
SHTG
?
Spark plug
Ignition coil
Ignition unit
Switches and cables PROBABLE CAUSES•Electrodes gap not correct
•Electrodes worn
•Feed cable interrupted
•Wrong thermal grading of spark plug
•Defective spark plug cap
•Primary or secondary winding interrupted
•High voltage cable defective
•Defective coil
•Defective unit
•Defective pick-up coil
•Woodruff key broken
Starter motor
•Starter motor defective
•Starter motor relay defective
•Diodes defectives
•Starter one-way bearing defective
•Main switch defective
•Emergency stop engine switch defective
•Harness with cable interrupted
•Neutral switch defective
•Sidestand switch defective
•Clutch switch defective
•Starter switch defective
ELECTRICAL SYSTEM
Cylinder and cylinder head
Piston and piston rings
Crankcase and valves, crankshaft PROBABLE CAUSES
•Spark plug tightening insufficiently
•Cylinder head or cylinder insufficiently tightened
•Cylinder head gasket broken
•Cylinder gasket broken
•Cylinder worn, damaged or seized
•Piston rings wrongly assembled
•Piston rings worn, yielded or broken
•Piston rings stuck together
•Piston seized or damaged
•Poor crankcase sealing
•Crankshaft oil seal edge damaged
•Poor valve sealing
•Valve and seat with insufficient contact
•Valve timing wrongly
•Valve spring broken
•Crankshaft seized
•Camshaft seized
POOR ENGINE COMPRESSION
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POOR PERFORMANCE AT IDLE SPEED/
UNSATISFACTORY PERFORMANCE AT MEDIUM-HIGH SPEED
8-3
TRBL
SHTG
?
Carburetor
Electrical system
Valves PROBABLE CAUSES•The starter piston fails to return freely
•Pilot jet obstructed or loose
•Pilot jet obstructed
•Pilot air screw wrongly set
•Idle speed wrongly set
(throttle valve stop screw)
•Throttle cable free play wrongly set
•Carburetor flooded
•Valve clearance wrongly set
Air filter
•Air filter element obstructed
POOR PERFORMANCE AT IDLE SPEED
See “FAILURE TO START/DIFFICULTIES IN STARTING”.
(FUEL SYSTEM, ELECTRICAL SYSTEM, COMPRESSION SYSTEM and Valve clearance)
Carburetor
PROBABLE CAUSES
•Petrol contains water or impurities or is adulterated
•Infiltrations of air
•Deformation of float
•Defective diaphragm
• Needle valve worn or scratched
•Needle valve seat insufficiently sealed
•Needle stop position incorrect
•Fuel level set wrongly
•Main jet obstructed or loose
•Main nozzle obstructed or loose
UNSATISFACTORY PERFORMANCE AT MEDIUM-HIGH SPEED
•Defective battery
•Defective spark plug
•Defective ignition unit
•Defective AC magneto
•Defective ignition coil
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TT600RE WIRING DIAGRAM
467C4B5CAMP403D494A4856 172320-2
GWLY
BB
B
BBLWRB
R
B
B
B
RLBOrRBLYGW
Or
B
LW
MAIN HARNESSB
B
B
Y Y
LBG
LGRBLYGWLWLBOrRB
LW
GY
GY
RBBr
Br
187
GB
12V10W
BL12V5WB
Y G
12V60/55WBGYA
A
12V10W
A
GB
BrBBrB
B
GBB
GBB
GBB
BrB
12V10WB
B
BrL
GB
12V10WB
B
187
BY
B
R
B
BrL
WWB
OFF
BrL
W
B
W
BB
B
B
BLB
BBrB
G
B
BrB
Br
OFF
B
EXT. CORD
Br
GY
BL
G Y
GYB
B
L
GB
BrB
LR
LR SbB
RW
-
LR
L
BrL
GBSbB
BrB
YBrBrB
YBrGB
B
Ch
DgBrY
BrB
HIGH
TURN
NEU.ILL.
B
BrL
BrL
LB
BY
LY
LB
LYGW
B
RBOr
205
B
RBLBrL
Br
PARKOFFON
ON
ON
Sb
L
GB
GY G
Y
RBLYBY
LYBY
RUN
LW
B
B
LY
BY
LBrRR
LWRB
GB
R
B
GW
BrBrW
WB
Br
LY
WB
Sb
B
GWLY
(BLUE)B
B
LYB
OFF
BrRB
LWRB
Y
P
G
GB BBrWBrL
BrB
W
WW
GYBr
GY
Y
P
G
GB BBrWBrL
BrB
Y
N
RL
LOWHIGH
BrW BrWBr
PPBr
LY
B
GWLY
Or
RBBr
LW
BY
BY
START
OFF
R
B
GWLY
W
W
W
W
W
W
WRW
W
W
Sb
B
Sb
B
BrBB
-
-
B
LR
WRW
B
-
A
L
L
GY
LB
Br
WB
RB
MAIN HARNESS
AHEAD LIGHT
B
B
BrB

17
16
11
12
13
14
15
91029
8
5
3
12
64
28
20
21
22
19
2325
24
30
31
27
267
32
18
ELECTRICAL SYSTEM
DIAGRAM1 AC generator/Pickup coil
2 Rectifier/Regulator
3 Battery
4 Starter relay
5 Starting motor
6 Fuse
7 Main switch
8 Right handlebar switch
9 Engine stop switch
0 Starter switch
q Diode
w Clutch switch
e Sidestand switch
r Neutral switch
t Diode
y Ignitor unit
u Ignition coil
i Left handlebar switch
o Horn switch
p Diode
a Pass switch
s Dimmer switch
d Flasher switch
f Horn
g Flasher relay
h Headlight
j Flasher light
k Relay assy
l Front brake switch
; Rear brake switch
z Tail/stop light
x Meter
COLOR CODE
B ...........Black
Br ..........Brown
Ch .........Chocolate
Dg .........Dark green
G...........Green Gy .........Gray
L............Blue
Lg..........Light green
O...........Orange
P ...........Pink R...........Red
Sb .........Sky blue
W..........White
Y ...........Yellow
B/L ........Black/Blue B/W.......Black/White
B/Y........Black/Yellow
Br/B.......Brown/Black
Br/L .......Brown/Blue
Br/W......Brown/White Br/Y.......Brown/Yellow
L/B ........Blue/Black
L/R ........Blue/Red
L/W .......Blue/White
L/Y ........Blue/Yellow R/B........Red/Black
R/G .......Red/Green
R/W.......Red/White
R/Y........Red/Yellow
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