CLAAS 7633h – Claas Tr2 A57 2 Transmission Module: Loss of Up and Down Shifting Control of Ranges on Powertrain CAN Bus

The system has lost the ability to control up and down shifting of ranges on the Powertrain CAN bus. This issue is associated with an audio warning and does not trigger an ISC reset. The system returns to the default start gear after shifting to transmission neutral.

1. 1

   The Drivestick (R74)

2. 2

   The Armrest (A30) module

3. 3

   The Powertrain CAN bus network

4. 4

   The CLAAS vehicle CAN bus network

5. 5

   The Bridge (A103) module

6. 6

   The “Auto 5” module using tool n° 60 05 033 249

1. 1

   Inspect

   Inspect the Drivestick (R74) for any faults or damage.

2. 2

   Inspect

   Inspect the Armrest (A30) module for any faults or damage.

3. 3

   Inspect

   Inspect the Powertrain CAN bus network for connectivity issues or faults.

4. 4

   Inspect

   Inspect the CLAAS vehicle CAN bus network for connectivity issues or faults.

5. 5

   Inspect

   Inspect the Bridge (A103) module for any faults or damage.

6. 6

   Test and Replace

   Test the “Auto 5” module using tool n° 60 05 033 249 and replace it if required.