Description:

This diagnostic trouble code (DTC) UIC 523962.31 is generated under the following circumstances when the transmission oil temperature is above 10°C (50°F) and front-wheel drive is engaged:

• Difference between front-wheel drive axle speed and transmission output speed above 4% for more than 3 seconds.
• Front-wheel drive axle speed below or at 200 rpm at a travel speed of more than 0.7 km/h (0.4 mph).

Reaction:

When this error occurs, the control unit may limit the functionality of the front-wheel drive system to prevent potential damage and ensure safe operation.

Recommendations:

• Inspect Front-Wheel Drive Axle Speed Sensor:
  • Check the B89 front-wheel drive axle speed sensor for proper operation and ensure it is providing accurate readings.
• Verify Transmission Output Speed Sensor:
  • Ensure the transmission output speed sensor is functioning correctly and providing accurate speed data.
• Inspect Wiring and Connections:
  • Verify that all wiring and connections related to the front-wheel drive axle speed sensor and transmission output speed sensor are secure and free from damage or corrosion.
• Check for Mechanical Issues:
  • Inspect the front-wheel drive and transmission systems for any mechanical issues that could cause discrepancies in speed readings.
• Perform System Diagnostics:
  • Use diagnostic tools to read and clear any related error codes and perform system tests to ensure proper functionality.
• Consult Technical Support:
  • If the issue persists, contact John Deere technical support for further diagnostics and potential solutions.

Note:

Regular maintenance and inspection of the front-wheel drive and transmission systems can help prevent such faults and ensure reliable operation.