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SECTION 2 - OPERATION
2-11
Ignition Switch
The ignition switch has four positions:
Stop, 1 - When the switch is in this position,
the following cab functions will operate: rotary
headlight switch, brake lights, dome light,
cigar lighter, horn, turn signals, dimmer
switch, pin 2 of the 3-pin auxiliary connector,
trouble light, and fuel gauge. These items are
live with the ignition switch in the stop
position.
ACC, 2 - When the switch is in this position,
the following cab functions are live in addition
to the items listed in number one above: seat,
front and rear windshield wiper switches, front
and rear windshield washer switch, radio, fan
rotary switch, and air-conditioner switch.
Run, 3 - When the switch is in this position, the
following cab functions are live in addition to
the items listed in number two above: pin 1 of
3-pin auxiliary connector, electronic monitor
select switch, electronic monitor
acknowledge switch, electronic monitor
rotary select switch, warning light bar, PTO
switch (if equipped), differential lock switch (if
equipped), engine fuel solenoid, tractor
performance monitor, and ether cold start
button.
Engine Start, 4 - When the switch is turned
and held in this position, the engine will crank
and start as long as the safety start switch
circuit is complete. The following items will
turn off momentarily when the switch is turned
to the start position, but will be live again when
the key is released and returns to the run
position: radio, air conditioner, and fan control
switch.
The switch has a starter protection feature
built-in. If the switch is rotated to the start
position, and then released to the run position, it
will be necessary to rotate the switch to the stop
position in order to make another attempt at
starting the tractor. This will prevent accidental
engagement of the engine starting motor when
the engine is already running.
Figure 2-14
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