Key Switch - Toro Groundsmaster 5900 Series Service Manual

Key Switch

Testing
Electrical System: Component Testing
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1. Operator control console
The key switch on the console arm has three (3) positions − OFF, ON and
START. The key switch is an input used by the master Toro Electronic Controller
(TEC) to manage various machine functions.
The key switch and its circuit wiring can be tested as a TEC input using the
InfoCenter Display (see
that the switch and circuit wiring are not functioning correctly, proceed with the
following test procedure:
1. Park machine on a level surface, lower cutting decks and stop engine.
Remove key from key switch.
2. Turn battery−disconnect switch to the OFF position.
3. Disassemble console arm to gain access to key switch (see
(page 7–35)).
4. Disconnect wire harness connector from the key switch.
FRONT VIEW
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5. The key switch terminals are identified in
switch is shown in below table. With the use of a multimeter (ohms setting),
the switch functions can be tested to determine whether continuity exists
between the various terminals for each switch position. Verify continuity
between switch terminals.
Figure 208
2. Key switch
InfoCenter Display (page
STOP
RUN
START
Figure 209
Figure 209
Page 6–68
2
1
6–9)). If testing determines
Console Arm
6 1
2
5
3
4
REAR VIEW
and the circuitry of the
Groundsmaster ® 5900 & 5910
16227SL Rev B