CLAAS Id7811h / 7811h – HYD (A60): Short-circuit to ground of the front distributor external command

The front distributor external commands become inactive. The tractor will return to normal operating mode automatically once the correct voltage is restored.

• CLAAS Axion 800 Series (Axion 810, 830, 840, 850)
• CLAAS Axion 900 Series (Axion 920, 950)

1. 1

   Verify the Code: Note all error codes present on the tractor (via the Cebis terminal) to see if another code is generating this anomaly.

2. 2

   Inspect the Contact: Directly check the front distributor external command contact (switch).

3. 3

   Wiring and Harness Check: Check the connectors and the continuity of the harnesses linking the front distributor external command to the HYD (A60) module. Test the circuit specifically for a short-circuit to ground or an open circuit.

4. 4

   Power and Ground: Check the sources of energy, including fuses, power supply, and ground connections.

5. 5

   Component Testing: Check the resistance of the external command contact/switch to verify if it has failed internally.

1. 1

   Isolate the Circuit

   Disconnect the front distributor external command contact.

2. 2

   Test the Wiring

   Using a multimeter, check the wiring harness between the switch and the HYD (A60) module for a short to ground.

3. 3

   Repair or Replace

   If the wiring harness is chafed or shorted to the chassis, repair the damaged section of the wire. If the wiring tests good but the switch fails the resistance/continuity test, replace the front distributor external command contact.

4. 4

   Reassemble and Clear Codes

   Reconnect the switch and harness. Clear all error codes from the system.

5. 5

   Test Operation

   Operate the tractor and test the front distributor external commands to ensure the anomaly does not appear again.