Troubleshooting
Problem
Possible Cause
Corrective Action
1. The power/ground cables or control
cables are not connected.
1. Connect the cables.
2. The hydraulic pump motor has failed
or the pump has seized
2. Check for voltage at the hydraulic
pump motor while the vehicle ignition
switch is on and the control switch
is in the Raise position. If voltage is
present, replace the motor or hydraulic
power unit assembly.
3. The cable between the battery and the
solenoid is disconnected or broken.
3. Check for voltage to the hydraulic
pump motor start solenoid by testing
for voltage between both large
terminals and ground. If voltage is
not present between 1 large terminal
and the ground cable, the cable
between the battery and the solenoid
is disconnected or broken. Connect or
replace the cable.
4. The solenoid has failed.
4. Check for voltage between the other
large terminal of the hydraulic pump
motor start solenoid and ground while
jumping the 12V+ battery power to the
small terminal with the white/black wire.
If voltage is not present, the solenoid
has failed or the brown wire from the
small terminal of the solenoid to ground
is may be disconnected or broken. If
voltage is present, the white/black wire
from the small terminal of the solenoid
to control may be disconnected or
broken. Connect or replace the wiring
The hydraulic pump motor does not run.
5. Power from the relay is disconnected.
5. Check for voltage to the control
between the black wire and ground
at the white 9-pin control connector
of the vehicle side harness with the
vehicle ignition switch on and the plow
electrically connected to the vehicle.
The hydraulic pump continues to run while
the switch is in neutral.
1. The solenoid has failed in the closed
position.
1. Disconnect the controller while the
ignition is on. If the hydraulic pump
continues to run, the pump motor
start solenoid has failed in the closed
position. Quickly remove the power
to the plow by disconnecting the
power/ground cables to the plow.
Replace the solenoid. If the hydraulic
pump stops running, check the control
wiring for a short between the black
and white/black wire, or a failed control
switch. Connect, repair, or replace the
wiring or switch.
20
Содержание MSC13625
Страница 24: ...Schematics g318543 Plow Side Electrical Schematic Rev 0 24 ...
Страница 25: ...g318544 Vehicle Side Electrical Schematic Rev 0 25 ...
Страница 28: ......
