Description:

This diagnostic trouble code (DTC), SSU 523822.12, is triggered when the Steering System Control Unit (SSU) detects that the wheel angle sensor-flow meter is not detecting actual steering motion in the allotted time during calibration. This indicates excessive hysteresis, often occurring as additional hours accrue and the steering mechanics loosen.

Reaction:

When this error is detected, the steering system may not calibrate correctly, leading to inaccurate steering control and potential safety issues.

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-flow meter 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-flow meter.
• 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-flow meter 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.