Wheel Angle Sensor Calibration–John Deere AutoTrac™ Controller

PC12031-UN-05MAY09

Machine Calibration

A - Wheel Angle Sensor Calibration Button

B - Valve Calibration Button

NOTE: Wheel Angle Sensor Calibration (A) must be completed before Valve Calibration (B) can be performed.

Drive machine slowly at full throttle for approximately 2 to 5 min to being hydraulic fluid to operating temperature before beginning calibration procedure.

Calibration procedure requires a large, open, and level surface to complete required steps. Ensure area is clear of any obstacles and traffic.

At any time during calibration, take control of the machine by grabbing the steering wheel or stopping the machine.

1. Select Wheel Angle Sensor Calibration button to begin calibration.

2. 
   PC21460-UN-26AUG15

   Wheel Angle Sensor Calibration–Wheel Angle Sensor Type

   A - Next Button

   System detects type of wheel angle sensor. Once sensor is detected, select Next button (A) to continue.

   If system fails to detect sensor, check connections to wheel angle sensor.

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3. 
   PC21461-UN-26AUG15

   Wheel Angle Sensor Calibration–Left

   A - Next Button

   Turn wheel until LEFT stop, then select Next button (A).

   NOTE: You may need to drive forward slowly to allow the wheels to reach their full range of motion.

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4. 
   PC21462-UN-26AUG15

   Wheel Angle Sensor Calibration–Right

   A - Next Button

   Turn wheels until RIGHT stop, then select the Next button (A).

   NOTE: You may need to drive forward slowly to allow the wheels to reach their full range of motion.

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5. 
   PC21463-UN-26AUG15

   Wheel Angle Sensor Calibration–Center

   A - Next Button

   Turn wheel back to CENTER with wheels straight, then select the Next button (A).

   NOTE: You may need to drive forward slowly to allow the wheels to reach their full range of motion.

   An accurate center calibration is critical for AutoTrac™ performance. Drive forward toward a point on the horizon to ensure wheels are facing straight ahead.

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6. 
   PC21464-UN-26AUG15

   Wheel Angle Sensor Calibration–Drive

   A - Next Button

   Drive in a straight line at or above 16 km/h (10 mph) until calibration is complete. Select Next button (A).

   NOTE: Keep steering corrections to a minimum. Steering wheel movement adds extra time to calibration procedure or results in calibration failure.

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7. 
   PC21699-UN-08OCT15

   Machine Calibration

   A - Wheel Angle Sensor Calibration Status

   B - CAL Button

   Success (A) is displayed when wheel angle sensor calibration is completed.

   If calibration is interrupted, Incomplete is displayed. If there is a problem with the calibration, Failed is displayed.

   Repeat calibration procedure until it is successful.

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8. Select CAL button (B) to start valve calibration.