Toro Multi Pro 1200 - Service and Repairs; Sonic Mode Switch

Multi Pro 1200/1250Page 9 -- 22Sonic Boom System (Optional Kit)
Service and Repairs
Sonic Mode Switch
The sonic mode switch is used as an input for the ECU
to activate the Sonic Boom System. This switch has
three(3)positions:automatic,manualandoff.Thesonic
mode switch is located on the console.
Ifthe sonic mode switch isintheautomatic position,the
sonicsensorswillbeactivatedtoallowautomaticmove-
ment of the boom. The tips of the booms will remain at
a constant distance from the ground. The boom
switchescanbeusedtoraise/lowertheboomswhenthe
sonic mode switch is in the automatic position.
If the sonic mode switch is in the manual position, the
sonic sensors are disabled. The boom switches are
used to raise/lower the booms when the sonic mode
switch is in the manual position.
If the sonic mode switch is in the OFF position, the
booms will remain in position. The boom actuators w ill
notbeenergizedregardlessofsonicboomsensoractiv-
ity or change in boom switch position.
Testing
1. Beforedisconnectingthesonic modeswitchfortest-
ing, the switch and its circuit wiring should be tested as
aECUinputwiththeDiagnosticDisplay(seeDiagnostic
Display in the Troubleshooting section of this chapter).
If the Diagnostic Display verifies that the sonic mode
switchandcircuitwiringarefunctioningcorrectly,nofur-
therswitchtestingisnecessary.If,however,theDisplay
determinesthatthesonicmodeswitchandcircuitwiring
are not functioning correctly, proceed with test.
2. Parkvehicleonalevelsurface,stopengine,engage
parking brake and remove key from ignition switch.
3. Disassemble console to gain access to sonic mode
switch.
4. Disconnect harness electrical connector from the
sonic mode switch.
5. The switchterminalsaremarkedas showninFigure
9. The circuit logic of the sonic mode switch is shown in
thecharttotheright.Withtheuse ofamultimeter(ohms
setting),theswitchfunctionsmaybetestedtodetermine
whethercontinuityexistsbetweenthevariousterminals
for each switch position. Verify continuity between
switch terminals. Replace switch if testing identifies a
faulty switch.
6. If the sonic mode switch tests correctly and circuit
problem still exists, check w ire harness (see Electrical
SchematicandWireHarness Drawingsin thischapter).
7. After testing is completed, connect wire harness
connector to the sonic mode switch.
1. Mode switch (MP 1200) 2. Mode switch (MP 1250)
Figure 8
MULTI PRO 1200 MULTI PRO 1250
1
2
Figure 9
BACK OF SWITCH
SWITCH
POSITION
CLOSED
CIRCUITS
OPEN
CIRCUITS
AUTOMATIC 2+3
5+6
2+1
5+4
OFF NONE ALL
MANUAL 2+1
5+4
2+3
5+6