Case IH 519572-07 - UCM – UCM: Steering valve controller calibration fault

The control module has detected that the autoguidance steering valve has not been successfully calibrated, has lost its calibration parameters, or a recent calibration attempt failed to complete within the acceptable deadzone limits.

• MAGNUM AFS Connect
• Magnum Series (260, 280, 340, AFS Connect)
• Puma Series
• Steiger Series
• Axial-Flow Combines (Mid Range and Flagship)

1. 1

   Check hydraulic fluid temperature to ensure it is at normal operating temperature (cold oil is the most common cause of calibration failure).

2. 2

   Verify the steering cylinder rod length is physically measured and within 1/4 inch on both sides (perform a Rear Wheel Position calibration first if necessary).

3. 3

   Check for active ISOBUS communication faults or Wheel Angle Sensor faults (e.g., 3683-19, 3683-02, or 520199-09) that prevent calibration.

4. 4

   Inspect the CAN bus connections and the harness at the steering valve and the UCM for damage or loose pins.

1. 1

   Warm hydraulic oil

   Start the vehicle and drive it in a wide-open area to warm the hydraulic oil to normal operating temperature.

2. 2

   Navigate to calibration menu

   On the display, navigate to TOOLBOX > CALIBRATION > CALIBR.

3. 3

   Select calibration type

   Select the Steering Valve Calibration (or Automated Steering Deadzone).

4. 4

   Run Auto Cal wizard

   Follow the on-screen Auto Cal wizard. Caution: The wheels will move abruptly and the vehicle will turn itself during this process. Ensure the area is clear.

5. 5

   Allow calibration to complete

   The system will perform one coarse calibration followed by three fine calibrations.

6. 6

   Verify fault code clears

   Once the display confirms the calibration is saved, cycle the key power and verify that fault code 519572-07 changes to inactive or clears.

7. 7

   Replace steering valve if calibration fails

   If the calibration repeatedly fails despite warm oil and correct geometry, the steering valve or its internal solenoids have likely failed and require replacement.