Yamaha YFM7FGPW Service Manual page 452

EBS01086
4. Radiator fan motor
• Disconnect the radiator fan motor coupler
from the wire harness.
• Connect the battery (12 V) as shown.
Positive battery lead → blue 1
Negative battery lead → black 2
• Does the radiator fan motor turn?
YES NO
The radiator fan
motor is faulty and
must be replaced.
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COOLING SYSTEM
5. Radiator fan motor relay
• Remove the radiator fan motor relay from
the wire harness.
• Connect the pocket tester (Ω × 1) and bat-
tery (12 V) to the radiator fan motor relay
terminal as shown.
• Check the radiator fan motor relay of conti-
nuity.
Positive battery lead → brown 1
Negative battery lead → yellow/red 2
Positive tester probe → red/black 3
Negative tester probe → blue 4
• Does the radiator fan motor relay have
continuity between red/black and blue?
YES
– +
ELEC
NO
The radiator fan
motor relay is faulty
and must be
replaced.