Case IH 2459 - UCM – UCM: UCM: DEC ECU missing

A loss of CAN bus communication indicating the UCM is no longer receiving the expected data, CAN messages, or signals from the DEC ECU.

• MAXXUM T4E
• VESTRUM CVX
• AFS Connect Magnum Tractors (Models 180, 200, 220, 240, 250, 280, 310, 340, 380)
• Puma Series Tractors (Models 140, 150, 165, 175, 180-260 CVX)
• Axial-Flow Flagship Combines (7230, 8230, 9230, 7240, 8240, 9240, 7250, 8250, 9250)
• Early Riser 2000 Series Planters

1. 1

   Check the harnessing for loose connections or broken wires between the UCM and the DEC ECU

2. 2

   Verify the CAN bus network integrity and ensure no other devices are conflicting on the bus (e.g., aftermarket displays sending conflicting commands)