CLAAS 76F3h: No Message Was Transmitted from the External Function Module

The system indicates that no message was transmitted from the external function module. This suggests a communication issue between the external function module and the controller.

1. 1

   The connection between the external function module and the controller

2. 2

   The power supply to the external function module

3. 3

   The integrity of the communication wiring

1. 1

   Inspect

   Inspect the connection between the external function module and the controller for loose or damaged wiring.

2. 2

   Test

   Test the power supply to the external function module to ensure it is receiving the correct voltage.

3. 3

   Verify

   Verify the integrity of the communication wiring using a multimeter or continuity tester.