SSU 523826.12 – Excessive Hysteresis in AutoTrac Steering

SSU 523826.12 (SSU )

Code: 523826.12

Shortcode:

Description:

This diagnostic trouble code (DTC), SSU 523826.12, is triggered when the Steering System Control Unit (SSU) detects that the wheel angle sensor-axle is not detecting actual steering motion within the allotted time during calibration. This fault tends to occur as additional hours accrue and the steering mechanics loosen.

Reaction:

When this error is detected, the AutoTrac steering system may not function accurately, leading to potential issues with vehicle guidance and control.

Recommendations:

Inspect Steering Mechanics:

  • Check the steering mechanics for signs of wear or looseness that could contribute to excessive hysteresis.
  • Tighten or replace any worn components as necessary.

Verify Sensor Functionality:

  • Ensure that the wheel angle sensor-axle is functioning properly and providing accurate readings.
  • Use diagnostic tools to measure the sensor’s response time and accuracy.

Perform Calibration:

  • Recalibrate the steering system to ensure accurate readings from the wheel angle sensor-axle.
  • Follow the manufacturer’s guidelines for the calibration process.

Update Software:

  • Ensure that the SSU software is up-to-date. Apply any available firmware updates to improve calibration accuracy and system performance.

Replace Faulty Components:

  • If the wheel angle sensor-axle or related components are found to be defective, replace them with new, genuine parts.

Consult Technical Support:

  • If the error persists after performing the above steps, consult technical support or the manufacturer for further assistance.

Note:

  • Regular maintenance and inspection of the steering system components can help prevent hysteresis issues.
  • Ensuring proper calibration and tightness of steering mechanics is crucial for reliable steering performance.

Control Units: John Deere

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