Yamaha YZF-R1 2000, Supplementary Service Manual

Page: 72 / 78

–64–
NO
EB807400
5. Fan motor relay
S
Disconnect the fan motor relay coupler.
S
Connect the pocket tester (
Ω
1) and bat-
tery (12V) to the fan motor relay coupler as
shown.
YES
Replace the fan mo-
tor relay.
Battery positive lead brown
Battery negative lead green / black
Tester positive prove brown
Tester negative prove blue
1
2
S
Does the radiator fan motor relay have conti-
nuity between brown and blue?
3
4
The speedometer is
faulty and must be re-
paired.
NO
6. Speedometer
S
Disconnect the thermo unit coupler.
S
Set the main switch to “ON”.
S
Connect the green / red and black / blue
terminals with a jumper lead as shown.
YES
S
Does the coolant temperature display “HI”
and warning light comes on?
1
3
2
S
Remove the thermo unit from the radiator.
S
Connect the pocket tester (
Ω
1) to the ther-
mo unit as shown.
S
Immerse the thermo unit in a container filled
with coolant
.
Make sure that the thermo unit terminals do
not get wet.
S
Place a thermometer in the coolant.
S
Slowly heat the coolant, then let it cool to the
specified temperature as indicated in the
table.
S
Check the thermo unit for continuity at the
temperatures indicated in the table.
7. Thermo unit
NOTE:
1
2
3
EB807400
EB807402
Thermo unit
9.7
X
11.4 k
Ω
at 50
_
C
3.4
X
4.0 k
Ω
at 80
_
C
1.6
X
1.9 k
Ω
at 105
_
C
1.1
X
1.2 k
Ω
at 120
_
C
S
Handle the thermo unit with special care.
S
Never subject the thermo unit to strong
shocks. If the thermo unit is dropped, re-
place it.
WARNING
Thermo unit
23 Nm (2.3 m
S
kg)
Three bond sealock

10
COOLING SYSTEM
ELEC