8-47
COOLING SYSTEM
ELEC
S
Remove the coolant temperature sensor
from the thermostat assembly.
S
Connect the pocket tester (
Ω
1) to the
coolant temperature sensor
as shown.
S
Immerse the coolant temperature sensor in
a container filled with coolant
.
Make sure that the coolant temperature sen-
sor terminals do not get wet.
S
Place a thermometer
in the coolant.
S
Slowly heat the coolant, then let it cool down
to the specified temperature.
S
Check the thermo switch for continuity at the
temperatures indicated below.
6. Coolant temperature sensor
1
Test
step
Coolant
temperature
Resistance
1
2
3
20
_
C
2.32
X
2.59 k
Ω
0.31
X
0.33 k
Ω
0.14
X
0.15 k
Ω
80
_
C
110
_
C
WARNING
S
Handle the thermo switch with special
care.
S
Never subject the thermo switch to
strong shocks. If the thermo switch is
dropped, replace it.
Coolant temperature sensor
20 Nm (2.0 m
S
kg)
Three bond sealock
10
YES
NO
4. Radiator fan motor
S
Disconnect the radiator fan motor coupler
from the wire harness.
S
Connect the battery (DC 12 V) as shown.
Positive battery lead
!
blue
Negative battery lead
!
black
The radiator fan mo-
tor is faulty and must
be replaced.
S
Does the radiator fan motor turn?
1
2
YES
NO
5. Radiator fan motor relay
S
Disconnect the radiator fan motor relay from
the wire harness.
S
Connect the pocket tester (
Ω
1) and bat-
tery (12 V) to the radiator fan motor terminal
as shown.
S
Check the radiator fan motor of continuity.
Battery positive terminal
!
red / white
Battery negative terminal
!
green / yellow
Replace the radiator
fan motor relay.
S
Does the radiator fan motor relay have conti-
nuity between brown and blue?
1
Tester positive probe
!
brown
Tester negative probe
!
blue
3
4
2
NOTE:
2
3
EAS00809
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