SSU 522451.14 – B139 Wheel Angle Sensor, Voltages in Channel 1 and Channel 2 Not in Correct Ratio

SSU 522451.14 (SSU )

Code: 522451.14

Shortcode:

Description:

This diagnostic trouble code (DTC), SSU 522451.14, is triggered when the voltages in channel 1 and channel 2 of the wheel angle sensor (WAS) are not in the correct ratio. The signal voltage of sensor 2 should be half of the signal voltage of sensor 1. The DTC is triggered if the difference is 0.4 volts or more.

Reaction:

When this error is detected, the steering system may not function correctly, potentially leading to inaccurate steering angle readings and compromised vehicle control.

Recommendations:

Verify Sensor Calibration:

  • Ensure that both channels of the wheel angle sensor (WAS) are correctly calibrated.

Inspect Sensor Connections:

  • Inspect the wiring and connectors related to both channels of the wheel angle sensor for signs of damage, loose connections, or corrosion.
  • Ensure all connections are secure and free from contaminants.

Check Voltage Ratio:

  • Use diagnostic tools to verify that the voltage ratio between channel 1 and channel 2 meets the required specifications.
  • Ensure that the signal voltage of sensor 2 is half of the signal voltage of sensor 1.

Update Software:

  • Ensure that the software related to the steering system is up-to-date. Apply any available firmware updates to improve system performance and compatibility.

Replace Faulty Components:

  • If either channel of the wheel angle sensor 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 voltage ratio discrepancies.
  • Ensuring both sensors are functioning correctly is crucial for accurate steering input and vehicle control.

Control Units: John Deere

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