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Reelmaster 3550−DPage 5 − 30Electrical System
Mow/Transport Switch
The switch used for the mow/transport slide is a nor-
mally closed switch. The switch opens when the mow/
transport slide is in the transport position. The switch is
located under the floor plate (Fig 32).
The TEC controller monitors the position of the mow/
transport switch (open or closed). Using inputs from the
mow/transport switch and other switches in the interlock
system, the TEC controller controls the energizing of the
proportional relief valve (PRV) used to drive the cutting
unit motors,and solenoid valves (S1, S2, S3, and S4)
used to lower and raise the cutting units (see Table 3: In-
put Conditions Required to Illuminate Diagnostic Dis-
play Outputs in this chapter).
Testing
1. Park vehicle on a level surface, stop engine, apply
parking brake and remove key from ignition switch.
2. Before disconnecting the mow/transport switch for
testing, the switch and its circuit wiring should be tested
as a TEC electrical input using the Diagnostic Display
(see Diagnostic Display in this chapter). If input testing
verifies that the mow/transport switch and circuit wiring
are functioning correctly, no further switch testing is nec-
essary. If, however, input testing determines that the
mow/transport switch and circuit wiring are not function-
ing correctly, proceed with the following switch testing
procedure.
3. Locate switch and disconnect electrical connector
from the switch.
1. Mow/Transport switch
Figure 32
1
4. Check the continuity of the switch by connecting a
multimeter (ohms setting) across the connector termin-
als.
5. When the switch plunger is extended (mow/transport
slide in MOW position) there should be continuity
between the switch terminals.
6. When the switch plunger is depressed (mow/trans-
port slide in TRANSPORT position) there should be no
continuity between the switch terminals.
7. Replace switch if testing determines that it is faulty.
8. When switch testing is completed, reconnect switch
to wire harness.