Electronic Speed Control (Non-PDS)
Read section A and B completely prior to operation or repair of golf car
I-2
GENERAL
The Electronic Speed Control system consists of two separate units, pedal box and controller.
To work on the pedal box, remove the rocker panel first, raise the floor mat, and then open the access
cover on the floor mat (Ref Fig. I1). To work on the inductive throttle sensor and the plunger piston,
remove the top cover of the sealed pedal box first.
PEDAL BOX
Pedal box consists of many components: accelerator pedal, return spring and a sealed case that
contains pedal position microswitch and resistance potentiometer (0-5K
Ω
) under control of a carrier
wheel that is linked to the accelerator pedal.
Fig. I 1: Access to Pedal Box
CONTROLLER
Controller is a type of solid-state device, solenoid controls its activation, and it is located underneath the
passenger-side seat.
The pedal box is connected to the controller via a 4-pin connector underneath the seat, and the both are
covered with environmental cover.
Controller is connected to battery via wires and supplies stable power to the resistance potentiometer.
Different position of gear relative to potentiometer means different resistance value fed back to the
controller, and the controller then distributes appropriate power of the motor according to the changes in
resistance values and the power supply.
Both the resistance accelerator and controller are solid-state devices, without interior components that
the user may operate. The test procedures are designed for testing the basic functions of the power
supply system and control circuit system. Once the circuits are normal, test and determine the
component (controller or resistance accelerator) that must be replaced.
