Troubleshooting; Troubleshooting; Starting Problems - Toro Groundsmaster 3500 30807 Service Manual

Troubleshooting

Remove all jewelry, especially rings and
watches, before doing any electrical trouble-
shooting or testing. Disconnect the battery
cables unless the test requires battery voltage.
For effective troubleshooting and repairs, you must
have a good understanding of the electrical circuits and
components used on this machine (see Foldout Draw-
ings − Chapter 9).
Switch and switch circuit operation can be checked us-
ing the LED indicators on the Standard Control Module

Starting Problems

Problem
Nothing happens when start attempt is made.
Electrical System
CAUTION
(SCM) (see Standard Control Module in this chapter). If
the machine has had any interlock switches by−passed,
they must be reconnected for proper troubleshooting
and safety.
Gasoline Engines Only − If the engine ECU identifies
that an engine problem exists (including electrical faults
with the various engine sensors), the check engine light
on the Operator's Control Panel will illuminate. The
Kubota Gasoline Service Tool and software, and the
Kubota Diagnostics Manual should be used to in identify
the cause of the problem, and any repairs that are ne-
cessary. Contact your Toro distributor for assistance in
Kubota engine troubleshooting.
Possible Causes
The traction pedal is not in neutral position or the
neutral switch is faulty.
Operator seat is unoccupied AND the parking brake is
not applied.
The PTO switch is in the ENGAGE position or faulty.
The battery is dead.
Fuse F1 or F3 is faulty or blown.
Loose or corroded battery or ground cables.
Loose or corroded engine ground.
The fusible link at the engine starter is faulty.
Wiring in the engine crank circuit is loose, corroded, or
damaged.
The ignition switch is faulty.
Starter solenoid wiring loose, corroded or damaged.
Starter solenoid is faulty.
The Standard Control Module (SCM) is faulty.
Diesel Engines Only
The engine coolant temperature is above 230F
(110C) or the over temperature shutdown switch is
faulty (grounded).
Gasoline Engines Only
The main power relay or main power relay circuit
wiring is faulty.
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