Description:

The error code ETC 000639.14 is generated when the control unit detects a very high error rate on the Vehicle CAN BUS. This indicates that the control unit is receiving an excessive number of incorrect CAN BUS messages or that there is a general problem with the CAN BUS network, such as electrical interference, faulty wiring, or defective components.

Reaction:

When this fault is detected, the control unit may reduce or disable certain functions that rely on CAN BUS communication to prevent erroneous operations or data corruption.

Recommendations:

Inspect CAN BUS Network:

• Check Wiring and Connections: Inspect all CAN BUS wiring and connectors for signs of damage, corrosion, or loose connections. Repair or replace as necessary.
• Test Network Integrity: Use diagnostic tools to test the integrity of the CAN BUS network. Look for electrical interference, signal degradation, or faulty components.

Diagnose and Replace Faulty Components:

• Test CAN BUS Modules: Check all modules connected to the CAN BUS for proper operation. Replace any modules that are malfunctioning or contributing to the high error rate.
• Inspect Termination Resistors: Ensure that the CAN BUS termination resistors are present and functioning correctly to maintain network integrity.

Update and Reconfigure:

• Software Updates: Apply any available firmware or software updates to the control units and CAN BUS modules to ensure they are operating with the latest fixes and improvements.
• Reconfigure Network: Reconfigure the CAN BUS network settings if necessary to optimize performance and reduce error rates.

Note:

Maintaining a reliable CAN BUS network is critical for vehicle operations. Regular inspections and timely repairs of the network components can help prevent high error rates and ensure seamless communication between control units. Using high-quality, shielded cables and connectors can also minimize electrical interference and improve network stability.