Toro Groundsmaster 7210, Service Manual

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Chapter 5
Electrical System
Table of Contents
General Information .............................................................................................................................. 5–3
Standard Control Module ................................................................................................................... 5–3
Standard Control Module Logic Chart ................................................................................................ 5–5
Yanmar Engine Electronic Control Unit (ECU) ................................................................................... 5–7
Yanmar Engine Electrical Components.............................................................................................. 5–7
CAN-bus Communications................................................................................................................. 5–7
Electrical Schematics and Diagrams.................................................................................................. 5–8
Special Tools ......................................................................................................................................... 5–9
Multimeter .......................................................................................................................................... 5–9
Battery Terminal Protector.................................................................................................................. 5–9
Battery Hydrometer.......................................................................................................................... 5–10
Dielectric Gel.................................................................................................................................... 5–10
InfoCenter Display ............................................................................................................................... 5–11
Splash Screen.................................................................................................................................. 5–11
Main Information Screen .................................................................................................................. 5–12
Main Menu Screen ........................................................................................................................... 5–13
Service Screen................................................................................................................................. 5–14
Settings Screen................................................................................................................................ 5–14
About Screen ................................................................................................................................... 5–15
Troubleshooting ................................................................................................................................... 5–16
Starting Problems ............................................................................................................................ 5–16
General Run and Transport Problems.............................................................................................. 5–17
Cutting Deck Operating Problems.................................................................................................... 5–18
Cutting Deck Lift/Lower Problems .................................................................................................... 5–19
Electrical System Quick Checks .......................................................................................................... 5–20
Testing the Battery (Open Circuit Test) ............................................................................................. 5–20
Testing the Charging System ........................................................................................................... 5–20
Testing the Glow Plug System.......................................................................................................... 5–21
Checking the Operation of the Interlock Switches ............................................................................ 5–21
Testing the Electrical Components....................................................................................................... 5–23
Key Switch ....................................................................................................................................... 5–23
PTO Switch ...................................................................................................................................... 5–25
Neutral Switches .............................................................................................................................. 5–27
Seat Switch ...................................................................................................................................... 5–29
Engine Oil Pressure Switch.............................................................................................................. 5–31
Parking Brake Sensor ...................................................................................................................... 5–33
PTO Solenoid Valve Coil .................................................................................................................. 5–35
Fusible Link Harness........................................................................................................................ 5–36
Diode Assemblies ............................................................................................................................ 5–37
Resistor Assembly ........................................................................................................................... 5–38
Glow Relay....................................................................................................................................... 5–39
Start and EGR Relays...................................................................................................................... 5–41
Fuel Pump........................................................................................................................................ 5–43
Dual Temperature Switch ................................................................................................................. 5–45
Fuses ............................................................................................................................................... 5–47
CAN-bus Terminator Resistor .......................................................................................................... 5–49
Deck Lift/Lower Switch..................................................................................................................... 5–50
Lift Control Manifold Solenoid Valve Coil.......................................................................................... 5–52
Groundsmaster 7210 Page 5–1 Electrical System
16222SL Rev C