Fendt A.1.CC – A002 / A034: CAN communication fault ECU and joystick

The CAN connection between the E-Box (ECU, enhanced control) and the CAN joystick is faulty. This results in limited valve operation (or limited operation of electric valves/crossgate lever).

• 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 300 Vario (COM III)
• Fendt 400 Vario (COM III) 409
• Fendt 400 Vario (COM III) 410
• Fendt 400 Vario (COM III) 411
• Fendt 400 Vario (COM III) 412
• Fendt 700 Vario (COM III) 711
• Fendt 700 Vario (COM III) 712
• Fendt 700 Vario (COM III) 714
• Fendt 700 Vario (COM III) 716
• Fendt 800 Vario (COM III) 815
• Fendt 800 Vario (COM III) 817
• Fendt 800 Vario (COM III) 818
• Fendt 900 Vario (COM III) 916
• Fendt 900 Vario (COM III) 920
• Fendt 900 Vario (COM III) 924
• Fendt 900 Vario (COM III) 926
• Fendt 900 Vario (COM III) 930

1. 1

   Inspect the wiring harness and connectors for the CAN bus connection between the A002 (ECU, enhanced control) and the A034 (Joystick) for discontinuities, corrosion, or shorts.

2. 2

   Verify the voltage supply for the CAN Bus on the A013 printed circuit board and check fuses F039, F040, F041, F046, and F047.

3. 3

   Use the Variotronic Ti terminal (A008) to access Diagnostics Menu 1 and check the 'IDEAL' target value for the transmission ratio coming from the A034 joystick to see if any signal is being registered.

1. 1

   Resolve Physical Connection Issues

   If the diagnostic checks reveal a broken wire, damaged connector, or blown fuse on the A013 board, repair the harness or replace the fuse.

2. 2

   Component Replacement

   If the wiring is intact but communication cannot be established, the A034 Joystick or the A002 ECU may have suffered a hardware failure and will need to be replaced.

3. 3

   EOL Programming

   Run new EOL programming (End-Of-Line programming) using the FENDIAS diagnostic software and an AGCO 2x4 CANUSB diagnostic scanner to re-pair the modules and configure the valves on the network.