Troubleshooting; Troubleshooting; Diagnostic Light - Toro Greensmaster TriFlex 3300 Service Manual

Troubleshooting

CAUTION
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.

Diagnostic Light

Greensmaster TriFlex machines are equipped with a
diagnostic light that indicates if the machine electrical
system is functioning correctly. The diagnostic light is lo-
cated on the control panel (Fig. 12).
When the ignition switch is moved to the RUN position
and the machine electrical system is functioning pro-
perly, the diagnostic light will be illuminated for approxi-
mately three (3) seconds and then will turn off. The light
should remain off during normal machine operation.
If the machine TEC controller detects an electrical sys-
tem malfunction (fault) during machine operation, the
diagnostic light will flash rapidly. The light will stop flash-
ing and will automatically reset when the ignition switch
is turned to the OFF position. The fault, however, will be
retained in controller memory and can be retrieved at a
future time (see Retrieving Fault Codes below).
If the diagnostic light does not illuminate when the igni-
tion switch is turned to the RUN position, possible
causes are:
D The loopback connector is not connected to the
machine wire harness (Fig. 13).
D The diagnostic light (or circuit wiring) is faulty.
D TEC controller fuses are faulty (see Fuses in the
Component Testing section of this chapter).
D The TEC controller is faulty.
Check electrical connections, controller fuses and the
diagnostic light to determine malfunction. Make sure
that the loopback connector (located under right side
cover next to operator seat) is secured to the wire har-
ness connector.
Electrical System
For effective troubleshooting and repairs, there must be
a good understanding of the electrical circuits and com-
ponents used on this machine (see electrical schematic
and wire harness drawings in Chapter 10 -- Foldout
Drawings).
If the machine has any interlock switches by--passed,
they must be reconnected for proper troubleshooting
and safety.
3
1. Console (GR3300)
2. Console (GR3400)
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3
1. TEC controller location
2. Loopback connector
Page 6 - - 8
1
3
Figure 12
3. Diagnostic light
Figure 13
3. Harness connector
Greensmaster 3300/3400
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1