Case IH 519576-31 - UCM – UCM: Steering valve controller calibration fault

Indicates that the automated steering valve has failed its calibration process, lost its calibration values, or has not yet been calibrated.

• MAGNUM AFS Connect
• Case IH Magnum AFS Connect series
• Case IH Puma series
• Case IH Steiger / Quadtrac series
• Case IH Flagship & Mid-Range Combines

1. 1

   Ensure hydraulic fluid is at normal operating temperature (cold oil will cause the calibration to fail)

2. 2

   Verify that the Wheel Angle Sensor (WAS) is properly connected, pre-calibrated, and registering counts (left/center/right) in the diagnostic screen

3. 3

   Measure the steering cylinder rod length; it must be within 1/4 inch on both sides (adjust if necessary)

4. 4

   Ensure the steering valve is ENABLED (YES) in the display settings (e.g., HH Menu / H3) and that the controller firmware is up to date

5. 5

   Verify that the manual override (kick-out) works correctly when the steering wheel is turned manually

1. 1

   Move the machine to a wide-open, flat area

   The vehicle will steer itself during this process.

2. 2

   Warm up the vehicle

   Drive or operate it until the hydraulic oil reaches normal operating temperature.

3. 3

   Navigate to the calibration menu on your display

   e.g., CALIBRATION > CALIBR on the Pro 700, or the ISObus diagnostic page/Steering settings on the Pro 1200.

4. 4

   Select the Steering Valve Calibration

   Or Automated Steering Deadzone.

5. 5

   Engage the autoguidance system

   Use the remote engage button on the armrest or joystick.

6. 6

   Follow the on-screen prompts

   The system will perform one coarse calibration followed by three fine calibrations. Caution: The wheels will move abruptly during the proportional gain calibration.

7. 7

   Save the calibration

   Once the status indicator turns fully green, save the calibration.