Mow/Transport Switch - Toro Reelmaster 3550-D Service Manual

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 39).
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. Make sure the mow/transport switch is properly ad-
justed (see Mow/Transport Switch in the Adjustments
section of this chapter).
3. Before disconnecting the switch for testing, the
switch and its circuit wiring should be tested as a TEC
electrical input using the Diagnostic Display (see Diag-
nostic Display in this chapter). If input testing verifies
that the switch and circuit wiring are functioning correct-
ly, no further switch testing is necessary. If, however, in-
put testing determines that the switch and circuit wiring
are not functioning correctly, proceed with the following
switch testing procedure.
4. Locate switch and disconnect electrical connector
from the switch.
Electrical System
5. Check the continuity of the switch by connecting a
multimeter (ohms setting) across the connector termin-
als.
6. When the switch plunger is extended (mow/transport
slide in MOW position) there should be continuity
between the switch terminals.
7. When the switch plunger is depressed (mow/trans-
port slide in TRANSPORT position) there should be no
continuity between the switch terminals.
8. Replace switch if testing determines that it is faulty.
9. Reconnect switch after testing.
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Figure 39
1. Mow/Transport switch
Reelmaster 3550−D/3555−D/3575−D
1