CLAAS Id765Ah / 765Ah (459) – TR2 (A57-2) transmission module: Stack overload- Random behaviour

Software or memory processing failure within the module, leading to a system response of "Random operation".

• CLAAS Axion 850-810
• CLAAS Axion 800
• CLAAS Arion 640-510
• CLAAS Arion 630-610
• CLAAS Arion 430-410
• CLAAS Axion 950-920

1. 1

   Note all error codes present on the tractor and analyze their interaction, as one error code can generate another.

2. 2

   Check the sources of energy to the TR2 (A57-2) module, including fuses, power supply, and ground connections. Voltage drops can cause module processing errors.

3. 3

   Check the connectors and continuity of the harnesses linking the TR2 component to ensure there are no short-circuits or open circuits.

4. 4

   Check the compatibility of the module's program versions, settings, and calibration.

1. 1

   Clear all error codes from the Cebis terminal / module memory.

2. 2

   Operate the tractor to see if the anomaly (random operation) returns.

3. 3

   If the code returns and all wiring, fuses, and grounds have been verified as good, the module is experiencing an internal software or hardware failure.

4. 4

   Attempt to re-flash or update the module's firmware using the CLAAS Diagnostic System (CDS) to resolve the stack overload.

5. 5

   If the module cannot be updated or the internal memory is permanently corrupted, replace the TR2 (A57-2) transmission module.