53
Lit. No. 21857
June 15, 2003
MOTOR RELAY TEST
WARNING
The driver shall keep
bystanders clear of the blade
during this test. Do not stand
between the vehicle and the
blade. During this test the right
wing will retract. A moving or
falling blade could cause
personal injury.
Disconnect control in cab.
Does m otor continue to run?
Motor does not run:
Is there 12V at m otor
relay prim ary term inal
with brown/green wire?
Attach a jum per cable across
the m otor relay secondary
term inals.
Does m otor run?
YES
YES
YES
Go to Vehicle Harness
Test - Motor Relay.
NO
NO
NO
Motor runs continuously:
YES
NO
Attach a ground jum per wire
from battery (-)
to relay prim ary term inal with
brown/red wire.
Does m otor run?
Repair or replace (+) cable
from battery to m otor relay.
Go to Vehicle Harness
Test - Motor Relay.
Replace m otor relay.
Go to Vehicle Harness
Test - Motor Relay.
Replace m otor relay.
1.
Perform motor test first to verify
battery cables, motor and pump
are good.
2.
Refer to the Motor and Motor
Relay Test Diagram.