Toro Groundmaster Series Service Manual page 193

Table of Contents
General Information .............................................................................................................................. 6-2
Traction Unit Operator's Manual and Accessory Installation Instructions............................................ 6-2
Yanmar Engine Electrical Components.............................................................................................. 6-2
TDM Display/Controller...................................................................................................................... 6-3
CAN bus Communications ................................................................................................................. 6-5
Electrical Schematics and Wire Harness Drawings/Diagrams ............................................................... 6-6
Electrical System Quick Checks ............................................................................................................ 6-7
Testing the Charging System ............................................................................................................. 6-7
Checking the Operation of the Interlock Switches .............................................................................. 6-8
Testing the Electrical Components ........................................................................................................ 6-9
Fusible Link Harness........................................................................................................................ 6-10
Fuses ............................................................................................................................................... 6-12
CAN bus........................................................................................................................................... 6-17
TDM Display/Controller.................................................................................................................... 6-19
Key Switch ....................................................................................................................................... 6-22
PTO Switch ...................................................................................................................................... 6-23
Lift/Lower Switch.............................................................................................................................. 6-24
Glow Plug Switch (Model 31900, 31901, 31907 and 31909) ............................................................ 6-25
Throttle Switch (Model 31902 and 31903)........................................................................................ 6-26
Seat Switch ...................................................................................................................................... 6-27
Traction Neutral Switch .................................................................................................................... 6-29
Parking Brake Switch ....................................................................................................................... 6-32
Cutting Unit High Trim Height Switch ............................................................................................... 6-34
Windshield Washer/Wiper Switch (Model 31903 and 31909) ........................................................... 6-37
Air Conditioning On/Off Switch (Model 31903 and 31909)................................................................ 6-38
Fan Speed Switch (Model 31903 and 31909)................................................................................... 6-39
Multifunction Switch (Optional)......................................................................................................... 6-40
Hazard Switch (Optional) ................................................................................................................. 6-41
Relays with 4 Terminals ................................................................................................................... 6-42
Relays with 5 Terminals ................................................................................................................... 6-45
PTO Clutch ...................................................................................................................................... 6-48
Fuel Pump........................................................................................................................................ 6-50
Transient Voltage Suppression (TVS) Diode .................................................................................... 6-52
Diode Assemblies (Model 31902 and 31903)................................................................................... 6-53
Resistor Assemblies ........................................................................................................................ 6-55
CAN bus Terminator Resistors ......................................................................................................... 6-56
Hydraulic Solenoid Valve Coils......................................................................................................... 6-59
Service and Repairs ........................................................................................................................... 6-61
Caring for the Battery ....................................................................................................................... 6-61
Storing the Battery ........................................................................................................................... 6-62
Servicing the Battery ........................................................................................................................ 6-63
Groundsmaster ® 3200, 3300 and 3310
19240SL Rev A
Electrical System
Page 6-1
Chapter 6
Electrical System