TIA 000639.12 – 500 kBd Vehicle CAN BUS, High Error Rate

TIA 000639.12 (TIA 639.12)

Code: 000639.12

Shortcode: 639.12

Description:

This diagnostic trouble code (DTC) is generated when the control software receives too many incorrect CAN BUS messages or detects a general problem in the connection to the 500 kBd vehicle CAN BUS. A high error rate in CAN BUS communication can significantly impact vehicle performance.

Reaction:

Limited or no function of the control software due to communication errors, affecting overall vehicle diagnostics and operations.

Recommendations:

Inspect CAN BUS Wiring and Connections:

  • Check all CAN BUS wiring and connectors for damage, corrosion, or loose connections.
  • Repair or replace any faulty wiring or connectors.

Verify CAN BUS Termination:

  • Ensure that the CAN BUS network is properly terminated at both ends to prevent reflection and communication errors.
  • Check and adjust termination resistors if necessary.

Monitor CAN BUS Traffic:

  • Use a CAN BUS analyzer to monitor traffic and identify sources of incorrect messages or high error rates.
  • Address any identified issues such as faulty control units or devices on the network.

Update Control Software:

  • Ensure the control software is up-to-date with the latest version provided by the manufacturer.
  • Updates may include improvements for handling CAN BUS errors.

Consult Technical Support:

  • If the problem persists, consult technical support for further diagnostic procedures or to identify any underlying issues with the CAN BUS system.

Note:

Regular inspection and maintenance of the CAN BUS network can prevent communication errors. Ensuring all devices on the network are functioning correctly and within specifications is crucial for reliable operation.


Control Units: John Deere