Sonic Boom Switch - Toro Multi Pro 5800 Service Manual

Sonic Boom Switch

The sonic boom switch is used as an input for the Toro
electronic controller (TEC) to activate the Ultra Sonic
Boom System. This switch has two (2) positions: auto-
matic and manual. The sonic boom switch is located on
the dash panel.
If the sonic boom switch is in the automatic position, the
sonic sensors will be activated to allow automatic move-
ment of the booms. The tips of the booms will remain at
a constant distance from the ground. The boom lift
switches can be used to raise/lower the booms when the
sonic boom switch is in the automatic position. The light
in the switch should be illuminated when the switch is in
the automatic position.
If the sonic boom switch is in the manual position, the
sonic sensors are disabled. The boom lift switches are
used to raise/lower the booms when the sonic boom
switch is in the manual position.
Testing
1. Before disconnecting the sonic boom switch for test-
ing, the switch and its circuit wiring should be tested as
a TEC input with the Diagnostic Display (see Diagnostic
Display in the Troubleshooting section of this chapter).
If the Diagnostic Display verifies that the sonic boom
switch and circuit wiring are functioning correctly, no fur-
ther switch testing is necessary. If, however, the Display
determines that the sonic boom switch and circuit wiring
are not functioning correctly, proceed with switch test.
2. Park vehicle on a level surface, stop engine, engage
parking brake and remove key from ignition switch.
3. Disconnect wire harness electrical connector from
the sonic boom switch on the dash.
4. The switch terminals are marked as shown in Figure
19. The circuit logic of the sonic boom switch is shown
in the chart to the right. With the use of a multimeter
(ohms setting), the switch functions may be tested to de-
termine whether continuity exists between the various
terminals for each switch position. Verify continuity be-
tween switch terminals. Replace switch if testing identi-
fies a faulty switch.
5. To test switch light, apply 12 VDC to terminal 8 (+)
and ground terminal 7 (--). The light should illuminate.
6. If the sonic boom switch tests correctly and circuit
problem still exists, check wire harness.
7. After testing is completed, connect wire harness
connector to the sonic boom switch.
Multi Pro 5800
1
1. Dash panel
7
8
SWITCH
POSITION
MANUAL
AUTOMATIC
Page 7.1 - - 27
2
Figure 18
2. Sonic boom switch
4 5 6
1 2 3
BACK OF SWITCH
Figure 19
CLOSED OPEN
CIRCUITS CIRCUITS
2 + 3 2 + 1
5 + 6 5 + 4
2 + 1 2 + 3
5 + 4 5 + 6
Ultra Sonic Boom System (Rev. A)