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SECTION 2 - OPERATION
2-61
CALIBRATING THE ELECTRONIC
INSTRUMENT CONTROL SYSTEM
As detailed in “Normal Operation of the
Electronic Control Instrument System” (earlier
in this section), certain values must be
preprogrammed into the control module for
proper operation and maximum benefit.
A detailed description of proper programming
and calibration of the module follows. It is not
necessary to follow the steps in the order shown
to properly program the module. Select the area
to be calibrated and follow the instructions
given. The only required step is “Entering the
Calibration Mode.” If the tractor is being
calibrated for the first time, use the following
steps in the order shown.
All programming and calibration is done with the
key switch in the “RUN” position and the engine
off.
There are nine possible items to calibrate when
in one of the three rotary select switch positions:
Tractor Ground Speed Position
1. Setting the Tire Rolling Radius
2. Programming Units of Ground Speed
Measurement (MPH or km/h)
Service Interval One Position
3. Service Interval One Reset
4. Service Interval One Alarm Reset
Service Interval Two Position
5. Service Interval Two Reset
6. Service Interval Two Alarm Reset
Tractor Accumulated Hours Position
7. Setting the Final Drive Ratio (FDR)
8. Setting the Transmission Output Shaft Gear
Profile (GEAR) N14 engine only
9. Setting the Engine Flywheel Ring Gear
Profile (Eng)
Entering the Calibration Mode
It will be necessary to put the system into the
calibration mode. To do this, the ignition must be
in the “OFF” position. Place the rotary select
switch in the desired position to be calibrated.
Press and hold the acknowledge/reset button.
Continue to hold the acknowledge/reset button
and turn the ignition to the “RUN” position. The
display monitor will go through its normal initial
test sequence. Once this is done, release the
acknowledge/reset button.
The monitor is now in the calibration mode and
ready tobe programmed. No matter which of the
nine items is to be calibrated, the upper portion
of the monitor will always display the words
“SET UP” along with a flashing display based
upon the position of the rotary select switch.
This tells the user that he is in the calibration
mode for that particular function.
NOTE: At any time, the calibration mode can
be exited by the user by simply turning the
ignition to the “OFF” position and then
turning the ignition back to the “RUN”
position. This will placethe system backinto
the normal operate mode. The words “SET
UP” will disappear from the upper portion of
the monitor display.