Description:

This error code, XSC 000639.14, indicates that the vehicle’s CAN Bus (500 kBd) is experiencing a very high error rate due to too many incorrect CAN Bus messages received. This signifies a general problem at the connection to the Vehicle CAN Bus (500 kBd).

Reaction:

When this fault occurs, the control software will exhibit limited or no functionality, severely impacting the communication between various electronic control units (ECUs) and overall vehicle operation.

Recommendations:

Inspect CAN Bus Network:

• Thoroughly check the CAN Bus wiring and connectors for any signs of damage, loose connections, or corrosion.
• Ensure all connections are secure and properly terminated.

Monitor CAN Bus Traffic:

• Use diagnostic tools to monitor CAN Bus traffic and identify any incorrect messages or high error rates.
• Ensure that the CAN Bus network is not overloaded and that all components are operating correctly.

Test Terminating Resistor:

• Inspect the terminating resistor within the CAN Bus network to confirm it is functioning correctly.
• Replace the terminating resistor if it is found to be defective or out of specification.

Update Control Software:

• Check for any available updates for the control software to address potential bugs or compatibility issues.

Consult Technical Support:

• If the issue persists, contact John Deere technical support for further diagnostics and solutions.
• Provide detailed logs of CAN Bus activity and any steps already taken to address the fault.

Note:

Maintaining the integrity of the CAN Bus network is essential for the vehicle’s electronic systems’ effective communication and operation. Regular inspections and maintenance can help prevent such high error rates.