Ezgo EXPRESS L4 Service Manual

Page F-2
Repair and Service Manual
B
ELECTRONIC SPEED CONTROL
Read all of Section B and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
service brake to control speed and proceed with diag-
nostic check.
Charging the vehicle will also de-activate the diagnostic mode
and the handheld diagnostic tool will not operate
The two-position ‘Run-Tow/Maintenance’ switch is
located under the passenger side of the seat on the ESC
environmental cover (Ref Fig. 1).
OPERATION
With the switch in ‘TOW/MAINTENANCE’ position:
• the controller is deactivated.
• the electronic braking feature is deactivated which
allows the vehicle to be towed or roll freely.
• the warning beeper is deactivated.
• With the switch in ‘RUN’ position.
• the controller is activated.
• the electronic braking feature and warning beeper
features are activated.
Fig. 1 Run-Tow/Maintenance Switch
TCT vehicles operate only in the ‘RUN’ position.
If all of the following events occur with the switch in
‘RUN’ position.
a) the vehicle has been stopped for more than one
second.
b) the accelerator pedal has been released for more
than one second.
c) the vehicle begins to roll above 2 mph (3 kph).
the electronic braking will limit speed to approximately
2 mph (3 kph) and the warning beeper will sound. When
the accelerator pedal is depressed, the electronic
braking and warning beeper will be overridden and
normal vehicle operation resumes. The system functions
in all key switch positions.
The TCT system is not a substitute for the ser-
vice brake which should be used to control
speed and reduce possibility of injury.
If all of the following events occur with the switch in
‘RUN’ position
a) the vehicle is being driven down a slope
b) the vehicle speed exceeds the designed speed
with the accelerator pedal depressed or released.
the regenerative braking will limit the speed of the vehi-
cle to the designed speed range. When the regenerative
braking feature is activated by this sequence of events,
the motor generates power which is returned d to the
batteries. TCT models are equipped with a regenerative
motor control system.
The motor’s speed is sensed and regulated directly by
the controller. As a vehicle begins to accelerate while
descending a hill, the speed sensor will cause the motor
to electrically resist the speed of the vehicle through
regenerative braking.
If the operator attempts to override the electronic brak-
ing feature by moving the direction selector or key
switch to another position, the warning beeper will sound
and the vehicle will brake rapidly until it reaches the
speed of approximately 2 mph (3 kph).
The TCT system also incorporates an anti-stall protec-
tion feature that prevents commutator damage from
stalling the vehicle against an obstacle or ascending a
hill. The electrical power to the motor will be deactivated
allowing the vehicle to roll freely before damage can be
done.
In Performance Mode option (See chart on page F-1)
features different degrees of regenerative breaking that
takes place anytime that accelerator pedal is released.
The Steep Hill option will rapidly slow the vehicle to a
stop unless the accelerator pedal is depressed. The Mild
Hill option will slow the vehicle to a stop at a slower rate
unless the accelerator pedal is depressed.
The TCT has a low power consumption unit but it will
drain the vehicle batteries over a period of time. If the
vehicle is to be stored for a prolonged period of time, the
TCT should be disconnected from the batteries by
selecting the ‘TOW/MAINTENANCE’ position on the
NOTICE
Controller
Environmental
Cover
Run-Tow/Maintenance Switch
NOTICE

Ezgo EXPRESS L4 Specifications

General

Brand	Ezgo
Model	EXPRESS L4
Category	Utility Vehicle
Language	English