A.1.A2

Fendt A.1.A2 – General System / Working and Steering Hydraulics: More valves connected than registered via end-of-line programming.

Issue description

The tractor's electronic control system has detected more physical electrical spool valves connected to the CAN bus than what is currently configured in the tractor's software, causing the system to restrict functionality so not all valves can be operated.

Applies to these machines

  • 409 Vario
  • 410 Vario
  • 411 Vario
  • 412 Vario
  • 711 Vario
  • 712 Vario
  • 714 Vario
  • 715 Vario
  • 716 Vario
  • 717 Vario
  • 718 Vario
  • 916 Vario
  • 920 Vario
  • 924 Vario
  • 926 Vario
  • 930 Vario
  • 411 Vario COM III
  • 412 Vario COM III
  • 413 Vario COM III
  • 414 Vario COM III
  • 415 Vario COM III
  • 712 Vario COM III
  • 714 Vario COM III
  • 716 Vario COM III
  • 718 Vario COM III
  • 818 Vario COM III
  • 820 Vario COM III
  • Fendt Farmer 400 series
  • Fendt Favorit 700 series
  • Fendt Favorit 900 series
  • Fendt Vario COM III series (300, 400, 700, 800, and 900 Vario models)

Check the cause

  1. Count the exact number of electrical spool valves installed on the front and rear of the tractor.

  2. Check recent service history to see if a new spool valve was retrofitted or if the basic control unit (ECU) was replaced, updated, or reset.

  3. Verify access to a laptop with FENDIAS diagnostic software and the AGCO CANUSB interface.

Repair steps

  1. Connect diagnostic interface

    Connect the AGCO CANUSB diagnostic interface to the tractor's diagnostic port and launch the FENDIAS software on your computer.

  2. Establish communication

    Establish communication with the tractor's General System / Hydraulic ECU.

  3. Navigate to EOL programming

    Navigate to the EOL (End Of Line) programming menu within FENDIAS.

  4. Locate configuration settings

    Locate the configuration settings for the electrical spool valves.

  5. Update programmed value

    Update the programmed value to match the exact number of physical valves connected to the tractor.

  6. Save EOL programming

    Save the EOL programming to the control unit.

  7. Cycle ignition

    Cycle the tractor's ignition (key off, wait 30 seconds, key on) to reboot the modules.

  8. Clear codes and test

    Clear the stored fault codes and test the operation of all spool valves via the crossgate lever to ensure full functionality has returned.

Parts you might need

(2)
  • Electrical Spool Valve

    If actively adding a new valve

  • Hydraulic Control Valve block

    If actively adding a new valve

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