Toro Groundsmaster 3280-D Service Manual page 229

Table of Contents
General Information .............................................................................................................................. 6-3
Electrical Schematics and Wire Harness Drawings/Diagrams............................................................ 6-3
Standard Control Module (SCM) ........................................................................................................ 6-3
Standard Control Module Logic Chart ................................................................................................ 6-5
Special Tools ......................................................................................................................................... 6-7
Multimeter .......................................................................................................................................... 6-7
Terminal Protector.............................................................................................................................. 6-7
Battery Hydrometer............................................................................................................................ 6-7
Dielectric Gel...................................................................................................................................... 6-8
Troubleshooting..................................................................................................................................... 6-9
Electrical System Quick Checks .......................................................................................................... 6-15
Testing the Battery (Open Circuit Test) ............................................................................................. 6-15
Testing the Charging System ........................................................................................................... 6-15
Testing the Glow Plug System (Groundsmaster 3280-D) ................................................................. 6-16
Checking the Operation of the Interlock Switches ............................................................................ 6-16
Adjustments......................................................................................................................................... 6-17
Traction Neutral Sensor (Machine Serial Number above 316000000) .............................................. 6-17
Parking Brake Switch ....................................................................................................................... 6-19
Testing the Electrical Components....................................................................................................... 6-20
Fusible Link Harness........................................................................................................................ 6-20
Fuses (Machine Serial Number below 400000000).......................................................................... 6-22
Fuses (Machine Serial Number above 400000000) ......................................................................... 6-23
Operator Cab Fuses (Machines with Operator Cab) ........................................................................ 6-25
Key Switch ....................................................................................................................................... 6-27
Indicator Lights................................................................................................................................. 6-29
Hour Meter ....................................................................................................................................... 6-31
PTO Switch ...................................................................................................................................... 6-32
Deck Lift Switch (Machine Serial Numbers above 311000000)......................................................... 6-34
Seat Switch ...................................................................................................................................... 6-36
Windshield Washer/Wiper Switch (Machines with Operator Cab) .................................................... 6-38
Accessory Power Switch (Machines with Operator Cab).................................................................. 6-40
Fan Speed Switch (Machines with Operator Cab)............................................................................ 6-42
Work Light Switch (Machines with Operator Cab-Optional) ............................................................. 6-44
Traction Neutral Switch (Machine Serial Numbers below 316000000) ............................................. 6-46
Traction Neutral Sensor (Machine Serial Number above 316000000) .............................................. 6-48
Parking Brake Switch ....................................................................................................................... 6-50
High Temperature Warning Switch ................................................................................................... 6-52
High Temperature Shutdown Switch ................................................................................................ 6-55
Engine Oil Pressure Switch.............................................................................................................. 6-58
Relays (Groundsmaster 3280-D) ..................................................................................................... 6-60
Lift Control Valve Solenoid Valve Coil (Machine Serial Number above 311000000) .......................... 6-63
PTO Electric Clutch.......................................................................................................................... 6-65
Fuel Stop Solenoid (Groundsmaster 3280-D) .................................................................................. 6-66
Glow Controller (Groundsmaster 3280-D)........................................................................................ 6-68
Fuel Pump (Groundsmaster 3280-D) ............................................................................................... 6-70
Fuel Pump (Groundsmaster 3320)................................................................................................... 6-73
Fuel Pump Relay (Groundsmaster 3320)......................................................................................... 6-75
Service and Repairs ........................................................................................................................... 6-76
Groundsmaster ® 3280-D/3320
05138SL Rev B
Electrical System
Page 6-1
Chapter 6
Electrical System