New Holland 12021 – INST: Communications Lost with Auxiliary Controller

The system has detected a loss of communication with the auxiliary controller. This may affect the functionality of connected systems or components that rely on this communication link.

1. 1

   The connection between the main controller and the auxiliary controller

2. 2

   The power supply to the auxiliary controller

3. 3

   The integrity of the communication wiring or bus

1. 1

   Inspect

   Check the physical connections between the main controller and the auxiliary controller for looseness, damage, or corrosion.

2. 2

   Test

   Verify the power supply to the auxiliary controller using a multimeter or appropriate testing device.

3. 3

   Examine

   Review the communication wiring or bus for continuity, breaks, or interference.