Greensmaster 3300/3400Page 6 -- 8Electrical System
Troubleshooting
CAUTION
Remove all jewelry, especially rings and
watches, before doing any electrical trouble-
shooting or testing. Disconnect the battery
cables unless the t est requires battery voltage.
Foreffectivetroubleshootingandrepairs,theremustbe
agood understandingof theelectricalcircuitsand com-
ponentsusedonthismachine(seeelectricalschematic
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.
Diagnostic Light
Greensmaster TriFlex machines are equipped with a
diagnostic light that indicates if the machine electrical
systemisfunctioningcorrectly.Thediagnosticlightislo-
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 lightwill be illuminated for approxi-
mately three(3) secondsand then willturn 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
diagnosticlightwillflashrapidly.Thelightwillstopflash-
ing and willautomatically reset when theignitionswitch
isturned tothe OFFposition.Thefault,however, willbe
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.
1. Console (GR3300)
2. Console (GR3400)
3. Diagnostic light
Figure 12
1
3
2
3
Figure 13
1
2
3
1. TEC controller location
2. Loopback connector
3. Harness connector
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