Case IH 519573-11 - UCM – UCM: Steering valve controller calibration fault

The steering valve controller has failed its calibration process, has an incorrect configuration, or has encountered a calibration checksum error.

• MAGNUM AFS Connect
• Magnum 400 AFS Connect
• Magnum 180
• Magnum 200
• Magnum 220
• Magnum 240
• Magnum 250
• Magnum 280
• Magnum 310
• Magnum 340
• Magnum 380

1. 1

   Check Steering Valve Controller Configuration: Verify that the controller is configured correctly for the specific tractor model.

2. 2

   Check Wheel Angle Sensor Calibration: A failed steering valve calibration is often tied to an incorrect CAN wheel angle sensor calibration, data values being out of range, or a CRC (Cyclic Redundancy Check) failure.

3. 3

   Verify EEPROM Data: Check for incorrect configuration of EEPROM data which can cause the valve calibration checksum to fail.

4. 4

   Check for Concurrent Faults: Ensure there are no active faults for high/low current on the steering auxiliary solenoids (e.g., codes 518585-05, 518586-06) which could prevent successful calibration.

1. 1

   Connect diagnostic tool

   Connect the Case IH diagnostic service tool to the tractor's diagnostic port.

2. 2

   Access UCM configuration

   Access the UCM and navigate to the Steering Valve Controller (SVC) configuration menu.

3. 3

   Calibrate Wheel Angle Sensor

   Perform a Wheel Angle Sensor calibration.

4. 4

   Calibrate Steering Valve Controller

   Once the wheel angle sensor is successfully calibrated and the data values are within range, initiate the Steering Valve Controller calibration.

5. 5

   Re-flash controllers

   If the calibration fails with a checksum error or EEPROM data error, re-flash the Steering Valve Controller (SVC) and Steering Redundant Controller (SRC) with the latest software and dataset.

6. 6

   Replace hardware

   If software flashing and calibration repeatedly fail, the physical Steering Valve Controller or Steering Sensor must be replaced.