Honda SH300 2006 Manual page 479

Turn the ignition switch OFF.
Short the relay connector terminals of the wire har-
ness side with a jumper wire.
Connection: Black – Blue
Remove the front inner cover (page 3-10).
Disconnect the fan motor 2P (Black) connector.
Turn the ignition switch "ON".
Measure the voltage between the fan motor 2P
(Black) connector of the wire harness side and
ground.
Connection: Black (+) – Ground (–)
If the battery voltage appears, the fan motor relay
switch line is normal.
Inspect the fan motor relay function test (page 22-
23).
If the battery voltage does not appear, inspect the
following:
– Open circuit in Blue wire between the fuse box
and fan motor relay switch line side
– Open circuit in Black wire between the fan motor
relay and fan motor
FUNCTION TEST
Remove the fan motor relay (page 22-24).
Connect an ohmmeter to the switching side relay
terminals.
CONNECTION: A – B
Connect a 12 V battery to the coil side relay termi-
nals.
CONNECTION: C (+) – D (–)
There should be continuity while the battery is con-
nected to the relay terminals and there should be no
continuity when the battery is disconnected.
LIGHTS/METERS/SWITCHES
RELAY CONNECTOR
Bl
Bu
JUMPER WIRE
2P CONNECTOR
(Wire side of female
terminals)
Bl
FAN MOTOR 2P
(BLACK)
CONNECTOR
RELAY
A B
C
D
D C B A
22-23