Fendt 2.1.EE – LBS ECU: ISO/LBS implement — Fault in LBS ECU

The tractor's communication network has lost contact with the implement's job computer, or the module itself has failed. As a direct consequence, the mounted implement can no longer be operated via the tractor's joystick controls or the terminal.

• 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 Vario
• Fendt Favorit 700 Vario
• Fendt Favorit 900 Vario
• Fendt 300, 400, 700, 800, and 900 Vario (COM III)
• Fendt 916 Vario
• Fendt 920 Vario
• Fendt 924 Vario
• Fendt 926 Vario
• Fendt 930 Vario

1. 1

   Check the CAN bus system for implement control

2. 2

   Inspect the CAN communication E-Box and the CAN joystick for defects

3. 3

   Inspect physical connections at the ISOBUS/LBS connector socket at the rear of the tractor and the implement's plug for dirt, bent pins, or corrosion

4. 4

   Test with the FENDIAS diagnostic tool to verify if the tractor can see the LBS ECU on the network

1. 1

   Visual Inspection

   Clean and inspect the ISOBUS breakaway connector between the tractor and the implement.

2. 2

   Wiring Harness Continuity

   Trace the CAN bus wiring harness from the implement control socket back to the tractor's E-Box. Look for chafed wires, pinched cables, or loose grounds. Repair any damaged wiring.

3. 3

   Joystick Verification

   Test the CAN joystick inputs. If the joystick is not sending signals to the E-Box, replace the joystick assembly.

4. 4

   Module Repair/Replacement

   If the CAN bus wiring is intact and the joystick is functional, the LBS Job Computer on the implement is likely defective. Remove the LBS ECU and either send it to a specialized electronics repair facility or replace it with a new unit.

5. 5

   Clear Fault Codes

   After the repair is complete, clear the stored fault codes from the tractor's memory. On older Vario terminals, this can be done by simultaneously pressing keys D, B, and C, or by using the FENDIAS diagnostic tool.