Service Manual

Workman GTX Electric Lithium

Page 3B -- 10

Electrical System

SC2: Traction Controller

The SC2: traction controller is secured to the seat base

rear panel (Fig. 14). The controller uses inputs from sev-

eral vehicle components to accurately control vehicle

speed, direction (forward and reverse) and regenerative

braking. Controller inputs include key switch, direction

selector switch (forward/reverse), accelerator pedal,

mode switch, traction motor thermistor (temperature),

traction motor encoder (speed sensor) and parking

brake. A single wire harness connection and five (5)

cables are used to connect the controller to the vehicle

electrical system. The traction controller is also connec-

tedtotheCANbus.

A fuse that is rated at 425 amperes continuous is at-

tached to the controller and protects the 48VDC vehicle

power supply circuit. If this fuse has failed, vehicle oper-

ation will not occur.

Refer to SC2: traction controller testing for m ore inform-

ation.

IMPORTANT: Do not open the traction controller.

There are no serviceable parts on or in the control-

ler. If you open the controller, you will void the war-

ranty. The controller is protected by

tamper--alerting devices.

Note: If the SC2: Traction Controller is replaced for

any reason, the machine software must be updated;

contact an Authorized Toro Distributor for assistance.

1. SC2: Traction controller

Figure 14