CLAAS 78B6h – Claas Tr2 A57 2 Transmission Module: Communication loss between TR2 transmission module (A57-2) and external function module (A62)

The TR2 transmission module (A57-2) has detected a communication loss with the external function module (A62) during a CSM sequence. The cause is identified as the 4 wheel drive being disconnected.

1. 1

   The TR2 transmission module (A57-2)

2. 2

   The external function module EXT (A62)

1. 1

   Verify the 4 wheel drive status

   Ensure the 4 wheel drive is properly connected and engaged.

2. 2

   Inspect the communication link

   Check the connection and wiring between the TR2 transmission module (A57-2) and the external function module EXT (A62).

3. 3

   Restart the system

   Power cycle the TR2 transmission module (A57-2) and the external function module EXT (A62) to reestablish communication.