Description:

This diagnostic trouble code indicates a fault in the circuit for powering down the control unit. The Engine Control Unit (ECU) sends a request to the Cab Control Unit to keep the voltage supply alive to allow for proper power down. This request was not complied with, indicating a potential issue with the battery connection or communication between units.

Reaction:

The tractor may experience limited or no function due to the inability to properly power down the control unit, potentially leading to operational issues.

Recommendations:

• Inspect Battery Connections: Check the battery for adequate charge and ensure that all connections are secure and free of corrosion. Clean or replace connections as necessary.
• Verify Power Down Circuit: Inspect the circuit responsible for powering down the control unit. Ensure that all wiring and connections are intact and functioning properly.
• Test Communication Between Units: Use diagnostic tools to test the communication between the Engine Control Unit and the Cab Control Unit. Ensure that the request for keeping the voltage supply alive is being properly received and executed.
• Reprogram Control Units: If necessary, reprogram the control units to ensure proper functionality and synchronization.
• Reset ECU and Monitor System: After resolving the issue, reset the ECU to clear the fault code and monitor the system to ensure normal operation.

Note:

Ensuring proper communication and power management between the control units is crucial for the reliable operation of the tractor. Regular inspections and timely maintenance can help prevent power-related issues.