CLAAS 78D3h: Ignition Off Message Not Received by External Function Module

The external function module EXT (A62) is not receiving the CAN 'Ignition off' message, or it is receiving an invalid value for this message.

1. 1

   The CAN communication between the ignition system and the external function module EXT (A62)

2. 2

   The signal integrity of the 'Ignition off' message on the CAN bus

3. 3

   The functionality of the external function module EXT (A62)