Service Manual

Workman GTX Electric
Page 3A -- 28
Electrical System
Light Pattern
Cause Necessary Action
6 Flashes The accelerator pedal is
pressed while starting the
machine.
Accelerator pedal operation
is abnormal.
Release the accelerator pedal, turn the key switch to the
OFF position, wait several seconds, turn the key switch
to the ON position and check for normal vehicle
operation.
If controller does not reset correctly, check accelerator
pedal operation (see Accelerator Pedal in this section).
Also, if necessary, inspect the circuit wires between the
accelerator pedal and the controller (see Electrical
Schematic and Wire Harness Drawings in Chapter 6 --
Electrical Drawings).
7 Flashes The remaining charge on the
batteries is low (vehicle
speed has been limited by
controller).
The batteries are fully
discharged (vehicle does not
operate).
The internal capacitor has a
pre--charge of less than 5V.
Charge the batteries fully and then check for normal
operation.
If this fault occurs regularly, consider that battery
charging has not been regular or that batteries may
need replacement.
8 Flashes The controller or traction
motor is overheated or too
cold.
The vehicle may continue to operate but at reduced
power until the component temperature reaches normal
levels.
Determine if the motor or controller is very hot or very
cold, then allow the machine to return to normal
temperatures before resuming operation.
Make sure that motor and controller are cleaned of all
dirt and debris that could lead to component
overheating.
10 Flashes A controller configuration
fault occurred.
Turn the key switch to the OFF position, wait several
seconds, turn the key switch to the ON position, and
check for normal vehicle operation.
If this fault continues to occur, contact your Authorized
Toro Distributor for assistance.
11 Flashes A motor encoder (speed
sensor) fault occurred.
Exceeded the maximum
motor speed.
Turn the key switch to the OFF position, wait several
seconds, turn the key switch to the ON position, and
check for normal vehicle operation.
If this fault continues to occur, inspect traction motor
encoder (speed sensor) (see Traction Motor in this
section).
Also, inspect the circuit wires between the traction motor
encoder and the controller (see Electrical Schematic and
Wire Harness Drawings in Chapter 6 -- Electrical
Drawings).
If a traction motor armature problem exists in the motor
(e.g. worn bearing in rear end bracket, missing retaining
ring on rear of armature shaft, loose or damaged tone
ring on armature), an encoder fault could be generated
due to the armature issue.