Troubleshooting - Toro Greensmaster 3120 Service Manual

Troubleshooting

Starting Problems
Problem
Starter solenoid clicks, but starter will not crank.
Note: If solenoid clicks, problem is not in safety interlock
system.
Nothing happens when start attempt is made.
Greensmaster 3120
17230SL Rev C
Remove all the jewelry, especially rings and watches, before doing
any electrical troubleshooting or testing. Disconnect the battery
cables unless the test requires battery voltage.
For the effective troubleshooting and repairs, you must have a good
understanding of the electrical circuits and components that are used on this
machine; refer to the Electrical Schematics in
If the machine has any interlock switches that are bypassed, connect the
switches for the correct troubleshooting and safety.
CAUTION
Appendix A (page
Possible Causes
Battery charge is low.
Battery cables are loose or corroded.
Battery ground to frame is loose or corroded.
Wiring at starter is faulty.
Starter solenoid is faulty.
Starter mounting bolts are loose or not supplying a sufficient
ground for starter operation.
Starter is faulty.
Function control lever is not in the neutral position.
Battery cables are loose or corroded.
Battery ground to frame is loose or corroded.
Fuse F1 (20 amp) is loose or faulty.
Fuse F3 (10 amp) is loose or faulty.
Fusible link at starter solenoid (included in main wire harness)
is faulty.
Wiring to the start circuit components is loose, corroded or
damaged; refer to Electrical Schematics and Wire Harness
Drawings/Diagrams in
Start safety relay (K2) is faulty.
Neutral switch is out of adjustment or faulty.
Starter solenoid fusible link is faulty.
Ignition switch is faulty.
Starter solenoid is faulty.
Fuse block is faulty.
Battery is faulty.
Page 5–5
A–1).
Appendix A (page A–1).
Electrical System: Troubleshooting