Yamaha T135SE Service Manual page 334

4. Radiator fan motor
9 Disconnect the radiator fan motor coupler
from the wireharness.
9 Connect the battery (12 V) as shown.
→→
Battery positive lead
→→
Battery negative lead
2
L
B
1
9 Does the radiator fan motor turn?
YES
The radiator fan
motor is faulty and
must be replaced.
11
blue
22
black
NO
8-42
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COOLING SYSTEM
5. Radiator fan motor relay
9 Disconnect the radiator fan motor relay cou-
pler.
9 Connect the pocket tester to the radiator fan
motor relay coupler (relay side) as shown.
Battery positive lead
Battery negative lead
Positive tester probe
Negative tester probe
4
L L
W /Y W /Y
Br Br
Br Br
3
9 Check the radiator fan motor relay blue and
brown for continuity.
9 Does the coupler is OK?
YES
ELEC
→→
11
brown
→→
22
white/yellow
→→
33
brown
→→
44
blue
2
1
NO
Replace the radiator
fan motor relay.