CLAAS 788Bh: EXT External Function Module Not Receiving Theoretical Speed Information

The EXT external function module is not receiving theoretical speed information from the 7-pin ISO connector via the BUS CAN. This condition has persisted for more than 5 seconds, indicating a potential issue with the data transmission or the source of the theoretical speed signal.

1. 1

   The connection and integrity of the 7-pin ISO connector

2. 2

   The BUS CAN communication between the EXT external function module and the source of the theoretical speed information

3. 3

   The signal source providing theoretical speed information to the 7-pin ISO connector

1. 1

   Inspect

   Check the 7-pin ISO connector for damage, corrosion, or loose connections.

2. 2

   Test

   Verify the BUS CAN communication using a diagnostic tool to ensure proper signal transmission.

3. 3

   Validate

   Confirm that the component providing the theoretical speed information is functioning correctly and sending the signal to the 7-pin ISO connector.