Description:

This diagnostic trouble code (TCU 002000.09) is generated when a data transfer problem occurs between the ECU and TCU. Specifically, the reception of CAN messages regarding engine load and engine speed from the ECU control unit is intermittent or nonexistent, which could be due to a loose wire or other communication issues.

Reaction:

When this error code is detected, the equipment may experience intermittent performance issues or erratic behavior due to the lack of reliable engine data. The system might display warnings or enter a protective mode to prevent potential damage.

Recommendations:

1. Inspect CAN BUS Communication:

• Check Connections: Ensure that all CAN BUS connections between the ECU and TCU are secure and free of corrosion.
• Inspect for Loose Wires: Look for any loose wires or connectors that could cause intermittent data transfer.

2. Test Communication Integrity:

• Use Diagnostic Tools: Use diagnostic tools to test the integrity of the CAN BUS communication.
• Monitor Data Transfer: Monitor the data transfer between the ECU and TCU to identify any interruptions.

3. Examine Wiring and Connectors:

• Inspect Wiring: Check all wiring and connectors associated with the CAN BUS system for damage or disconnection.
• Repair or Replace: Repair or replace any faulty wiring or connectors.

4. Verify ECU Functionality:

• Test ECU: Ensure that the ECU is functioning correctly and transmitting accurate data.
• Update Software: Update the ECU software if necessary.

Note:

Maintaining reliable CAN BUS communication between the ECU and TCU is essential for optimal equipment performance. Regular inspections and prompt repairs can help prevent data transfer issues.