6921413
15
TROUBLESHOOTING
3.6
Electrical Circuit
(Solenoid equipped attachments)
Use the electrical schematic and diagram shown and
follow the steps below:
1
Check the control knob circuit fuse. Replace as
necessary.
2
Check for loose electrical connections at the truck
ignition switch, control knob button, solenoid coil
terminals and diode.
3
Remove the diode from the solenoid coil terminal. Test
with an ohmmeter for high resistance in one direction
and no resistance in the other direction. If there is no
resistance in both directions, replace the diode.
NOTE:
When replacing the diode, the banded (+) end
must be connected to the coil and wiring as shown.
4
Use a voltmeter to determine if correct voltage is
present at the electrical leads when the button is
pressed.
• If there is
no voltage
at the solenoid, troubleshoot
the electrical circuit for shorts or open circuits.
• If there is
insufficient voltage
to the solenoid, check
the circuit for excessive voltage drop.
• If there is
sufficient voltage
to the solenoid, test for
coil continuity. Continue to Step 5.
5
Test the coil continuity by placing an ohmmeter test
lead on each solenoid coil terminal (ohmmeter on Rx1
scale).
• If there is an ohmmeter reading, the coil is good.
• If the coil is good, but the solenoid does not 'click'
when the control knob button is pressed, the
solenoid cartridge may be jammed.
• If there is no ohmmeter reading, the coil is defective.
Replace coil. Refer to Section 4.11.
CL0258.eps
CL0257.eps
7.5 amp Fuse
White
Knob Button
(Normally Open)
Diode
Solenoid Coil
Black
7.5 amp
Fuse
White Black
Diode
Solenoid Coil
User supplied wire
Control Lever Knob
with Push Button
12V –
2.4-2.8 Ohm
24V –
9.4-11 Ohm
36V –
24-28 Ohm
48V –
40-46 Ohm
IMPORTANT:
Banded end
must connect to
positive (+) side
of circuit.
Содержание 14J Series
Страница 2: ...BLANK...