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Tractor turns right or left unexpectedly when the resume switch is pressed and the vehicle is already lined up on the line.
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Encoder out of range when wheels are pointed forward
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With front wheels pointed forward encoder should be +/- 500. Drive forward with wheels pointed straight ahead until encoder is in limit.
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ATU disengages
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Anti-rotation device too tight › causing misalignment of ATU with the steering shaft.
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Re-position ATU so it slides easily on steering shaft then adjust anti-rotation device
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Steering Wheel speed too high on a vehicle with high steering resistance.
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Lower Steering wheel speed
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Looseness or rotation in the Steering console
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Insert shims to take out play in Steering console
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Steering Wheel turns hard after ATU installed.
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Lubricate Steering Shaft where it goes through console
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Disengagement force set too low for a vehicle with high steering resistance.
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Set disengagement force setting from normal to high.
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ATU unstable when entering track
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Acquire sensitivity too high
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Decrease acquire sensitivity
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ATU takes too long to enter next track
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Acquire sensitivity too low
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Increase acquire sensitivity
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| Symptom |
Problem |
Solution |
|
ATU constantly weaves in the row
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StarFire Height or Fore-Aft not properly set
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Enter correct StarFire Height and Fore-Aft dimension
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StarFire Receiver not in front of or even with Fixed Axle (Even with or Behind for Articulated)
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Position StarFire in front of or even with Fixed Axle (Even with or Behind for Articulated)
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Line sensitivities incorrect.
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Optimize line sensitivities (See OPTIMIZING AUTOTRAC UNIVERSAL PERFORMANCE in Setup section.)
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StarFire mount direction in SETUP different from actual mount direction
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Correctly match TCM SETUP mount direction to actual mount direction
|
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Too much play in steering mechanism
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Check steering cylinder bushing; tie rod ends, etc. for proper tolerance.
|
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|
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Increase steer play
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ATU did not establish direction correctly
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Drive forward at a speed greater than 1 mph and turn steering wheel greater than 45 degrees in one direction
|
|
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Looseness or rotation in the Steering console
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Insert shims to take out play in Steering console
|
|
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Loose Soil
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Add Ballast
|
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AutoTrac Universal won't engage. AutoTrac will not resume.
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Stop Code encountered
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See list of stop codes to find issue
|
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AutoTrac Universal does not appear on INFO or SETUP screens
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System not recognizing AutoTrac Universal on CAN bus line
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Ensure AutoTrac Universal is connected to GreenStar Harness and receiving power
|
|
|
|
Check for blown fuses in ATU wiring harness
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| Symptom |
Problem |
Solution |
|
Direction can not be determined
|
Old TCM Software
|
Update TCM Software to newest software (Version 1.08 or greater)
|
|
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No differential Correction
|
Establish differential correction
|
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No GPS
|
Establish signal
|
|
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ATU did not establish direction correctly
|
Drive forward at a speed greater than 1 mph and turn steering wheel greater than 45 degrees in one direction
|
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AutoTrac Universal drives inside curve
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Curve Sensitivity too high
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Lower curve sensitivity
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AutoTrac Universal drives outside curve
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Curve Sensitivity too low
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Increase curve sensitivity
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