Toro Electronic Controllers (Tecs) - Toro Groundsmaster 5900 Series Service Manual

Toro Electronic Controllers (TECs)

Groundsmaster ® 5900 & 5910
16227SL Rev B
g288500
1. Front power center (behind operator seat)
2. Master controller
Groundsmaster 5900 and 5910 machines use two (2) Toro Electronic Controllers
(TEC). The controllers contain a microcontroller that monitors the condition of
various switches and senders (inputs). The controllers then direct electrical
power to control appropriate machine functions (outputs) based on the input
conditions. The controllers are attached to the front power center behind the
operator seat (Figure 205).
Logic power is provided to both of the controllers as long as the battery cables
are connected to the batteries and the battery−disconnect switch is set to the
ON position. Fuses F−D1 and F−D2 (2 Amp) provide circuit protection for this
logic power to the controllers.
The electrical power for controller outputs is provided through three (3) connector
terminals (PWR 2, PWR 3 and PWR 4). Three (3) 7.5 amp fuses (F−A1, F−B1
and F−C1) provide circuit protection for the master controller outputs. Three (3)
7.5 amp fuses (F−A2, F−B2 and F−C2) provide circuit protection for the slave
controller outputs.
The master TEC monitors the states of the following components as inputs:
Master TEC Input Number
IN 1
IN 2
IN 3
IN 4
IN 5
IN 6
IN 7
IN 8
1
2
Figure 205
3. Slave controller
Traction Pedal Position Switch −
Traction Pedal Position Switch −
High/Low Range Traction Speed Switch
High/Low Range Traction Speed Switch
Page 6–63
3
Description
Neutral/Forward
Neutral/Reverse
Parking Brake Switch
− High Range
− Low Range
Not Used
Air Cleaner Service Indicator
Seat Switch
Electrical System: Component Testing