Toro Workman MDE 2008, Service Manual

Page: 45 / 130

Workman MDE
Page 3 -- 27
Electrical System
1 Flash System inoperable. Turn on/off switch OFF, wait several seconds and turn
on/off switch ON. If controller does not reset correctly,
controller replacement may be necessary.
2 Flashes The accelerator pedal was
depressed when on/off
switch was turned ON.
Turn on/off switch OFF, release accelerator pedal and
turn on/off switch to ON.
If controller does not reset correctly, accelerator switch
adjustment may be necessary or switch may be faulty.
3 Flashes System inoperable. Turn on/off switch OFF, wait several seconds and turn
on/off switch ON. If controller does not reset, check
battery pack voltage and all battery cable connections.
Also check main contactor wire and cable connections
and main contactor. NOTE: If main contactor audibly
clicks when on/off switch is turned ON, problem is most
likely a faulty wire or cable connection.
Controller replacement may be necessary.
4 Flashes Main contactor malfunction. Turn on/off switch OFF, wait several seconds and turn
on/off switch ON. If controller does not reset, inspect
main contactor (see Main and Accessories Contactors in
this section). Check main contactor wire and cable
connections.
If problem continues, contactor replacement may be
necessary.
5 Flashes The charger cord is plugged
into the vehicle charger
receptacle.
Turn on/off switch OFF, unplug charger cord from vehicle
and turn on/off switch ON.
If controller does not reset correctly, check charger
interlock switch.
6 Flashes Accelerator control
(accelerator switch and
potentiometer) is out of
adjustment.
Adjust accelerator switch and potentiometer (see
Accelerator Switch and Accelerator Potentiometer
adjustment/calibration in the Adjustments section of this
chapter).
7 Flashes Battery voltage is out of
range.
Inspect and test vehicle batteries and battery cable
connections (see Battery Service in the Service and
Repairs section of this chapter).
8 Flashes The controller is overheated. The vehicle will continue to operate but at reduced
power until the controller temperature lowers.
9 Flashes The traction motor is
overheated (battery
discharge indicator displays
more than 1 bar).
The battery is nearly
discharged and the vehicle
is in the energy saving mode
(reduced speed and battery
discharge indicator displays
1 bar with red light
illuminated).
Stop vehicle and allow motor to cool before continuing
operation. Traction motor high temperature switch may
be faulty.
Charge the batteries immediately to prevent battery
damage.
Electrical System