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Greensmaster 3320/3420Page 6 -- 20Electrical System
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.
For effective troubleshooting and repairs, there must be
a good understanding of the electrical circuits and com-
ponents used on this machine (see Chapter 10 -- Fold-
out Drawings).
If the machine has any interlock switches by--passed,
they must be reconnected for proper troubleshooting
and safety.
NOTE: Check Diagnostic Light (serial number below
312000000) or InfoCenter display (serial number above
312000000) for possible operator advisories or faults
whenever diagnosing machine electrical problems.
Diagnostic Light (Serial Number Below 312000000)
GreensmasterTriFlexHybrid machines with serialnum-
ber below 312000000 are equipped with a diagnostic
light that indicates if the machine electrical system is
functioning correctly. The diagnostic light is located on
the control panel (Fig. 25).
When the ignition switch is moved to the RUN position
and the machine electrical system is f unctioning 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 flashr apidly. 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 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.
1. Console (GR3320)
2. Console (GR3420)
3. Diagnostic light
Figure 25
1
3
2
3
Figure 26
1
2
1. TEC controller 2. Seat platform