Toro Groundsmaster 300 Series Service Manual page 183

Table of Contents
ELECTRICAL SCHEMATICS . . . . . . . . . . . . . . . . . . . 1
SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
ELECTRICAL SYSTEM QUICK CHECKS . . . . . . . . 3
Battery Test (Open Circuit Test) . . . . . . . . . . . . . . . 3
Charging System Test . . . . . . . . . . . . . . . . . . . . . . . . 3
Glow Plug System Test (Groundsmaster 328-D) . 3
COMPONENT IDENTIFICATION AND TESTING . . 4
Seat Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
High Temperature Override Switch . . . . . . . . . . . . . 4
Start Enable, Run Enable, Over Temperature
and Seat Delay (GM 328-D) Relays . . . . . . . . . . 5
Fuel Sender . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Fusible Link Harness . . . . . . . . . . . . . . . . . . . . . . . . . 7
Note: Only new information for Groundsmaster 345
machines with serial numbers above 21000000 and
Groundsmaster 328-D machines is provided in this
Chapter. See Chapter 6 - Electrical System for addition -
al component identification and testing information.
Electrical Schematics
The electrical schematics for all Groundsmaster 300
models are provided in Chapter 6 - Electrical System.
Groundsmaster 300 Series
For GM 345 (Serial Number above 21000000) and GM 328-D
SERVICE AND REPAIRS . . . . . . . . . . . . . . . . . . . . . 12
Page 6A - 1
Electrical System
Diode Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Control Ignition Delay Module
(Groundsmaster 345) . . . . . . . . . . . . . . . . . . . . . . . 8
Glow Relay (Groundsmaster 328-D) . . . . . . . . . . . 8
Glow Controller (Groundsmaster 328-D) . . . . . . . 9
Run Solenoid (Groundsmaster 328-D) (Solenoid
with 3 Wire Connector) . . . . . . . . . . . . . . . . . . . . 10
Run Solenoid (Groundsmaster 328-D) (Solenoid
with 2 Wire Connector) . . . . . . . . . . . . . . . . . . . . . 11
Battery Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Chapter 6A
Electrical System (Rev. G)