CLAAS Id77B7h / 77B7h (12) – HYD (A60) - Hydraulic module: The "Configuration" message from valve 2 is not received or is improbable

As a safety measure, electrodistributor 2 automatically returns to the neutral position.

• Axion 800 series
• Axion 810
• Axion 820
• Axion 830
• Axion 840
• Axion 850

1. 1

   Check the Hydraulic CAN Bus communication network for faults

2. 2

   Check the connectors and continuity of the harnesses linking the HYD (A60) module to the electrodistributor module (A105-2)

3. 3

   Test the wiring for any short-circuits or open circuits

4. 4

   Check the sources of energy, including fuses, power supply voltage, and ground connections to the modules

5. 5

   Inspect the hydraulic module HYD (A60) and the electrodistributor module (A105-2) for physical damage, mechanical seizing, or temperature issues

6. 6

   Check the compatibility of the program versions, settings, and calibration of the hydraulic modules

1. 1

   Analyze Codes

   Note all error codes present on the tractor. Analyze the interaction between them to ensure Id77B7h wasn't generated by a broader CAN bus failure (such as a BDG module communication error).

2. 2

   Test the Circuit

   Using a multimeter, perform continuity and voltage drop tests on the Hydraulic CAN bus lines between the HYD (A60) module and the electrodistributor module (A105-2).

3. 3

   Repair Wiring

   If a short, open circuit, or corroded connector pin is found, repair or replace the affected harness section.

4. 4

   Replace the Valve

   If the wiring, power, and ground are all within specification, the internal electronics of the electrodistributor module (A105-2) have likely failed and the valve must be replaced.

5. 5

   Calibrate

   If a new electrodistributor is installed, perform the necessary software calibration so the HYD (A60) module recognizes the new valve's configuration.

6. 6

   Clear and Test

   Clear all error codes from the system, then operate the tractor's hydraulic functions to verify the anomaly does not return.