Yamaha YZF-R6 99, Service Manual

Page: 382 / 400

8-48
Replace the thermo
switch.
NO YES
S
Does the thermo switch operate properly as
described above?
S
Remove the temperature sender from the
cylinder head.
S
Connect the pocket tester (
Ω
10) to the
thermo unit as shown.
S
Immerse the thermo unit in a container filled
with coolant
.
S
Place a thermometer in the coolant.
S
Slowly heat the water, then let it cool down to
the specified temperature.
S
Check the thermo unit for continuity at the
temperatures indicated below.
7. Thermo unit
Handle the temperature sender with spe-
cial care.
Never subject the temperature sender to
strong shocks. If the temperature sender
is dropped, replace it.
WARNING
Temperature sender
15 Nm (1.5 m
S
kg)
Three bond sealock

10
Thermo unit resistance
50.6
X
64.2
Ω
at 80
_
C
17.3
X
16.1
Ω
at 120
_
C
Replace the tempera-
ture sender.
NO YES
Properly connect or
repair the cooling
system’s wiring.
NO
EB807403
8. Wiring
S
Check the entire cooling system’s wiring.
Refer to “CIRCUIT DIAGRAM”.
S
Is the cooling system’s wiring properly con-
nected and without defects?
YES
Replace the com-
bination meter.
1
2
3
105
±
3
_
C 100
±
3
_
C
COOLING SYSTEM
ELEC