Fendt 0.0.1E – ECU, Neumaier: ECU, Neumaier Bus fault

CAN bus communication error specifically related to the Neumaier reversing system, resulting in the system not functioning.

• 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) / Farmer 400
• Fendt 700 Vario (COM III) / Favorit 700
• Fendt 800 Vario (COM III)
• Fendt 900 Vario (COM III) / Favorit 900

1. 1

   Verify the power supply for the CAN bus, typically routed through circuit board A013

2. 2

   Inspect fuses on circuit board A013 that protect the CAN bus lines (commonly F040, F041, and F047)

3. 3

   Inspect the CAN bus wiring harness connecting the tractor's main ECU to the Neumaier reversing system ECU for physical damage, corrosion, or loose connector pins

4. 4

   Use the FENDIAS diagnostic tool to check for CAN bus overruns or warnings, and attempt to communicate directly with the Neumaier ECU

1. 1

   Access fuse panel

   Safely park the machine and turn off the ignition. Access the main fuse panel and circuit board A013.

2. 2

   Test and replace fuses

   Test the fuses (F040, F041, F047) with a multimeter. Replace any blown fuses and re-test the system.

3. 3

   Inspect wiring harness

   Inspect the wiring harness running to the Neumaier reverse drive facility. Look for pinched wires near the rotating operator seat/console mechanism, which is a common failure point.

4. 4

   Check and clean connectors

   Check the connectors at the Neumaier ECU. Disconnect, clean with contact cleaner, and securely reconnect them to ensure there is no logic error caused by high resistance.

5. 5

   Clear fault codes

   Clear the fault codes using the tractor's terminal or FENDIAS software.

6. 6

   Test system and replace ECU if necessary

   Test the reversing system. If the fault code 0.0.1E returns immediately, the Neumaier ECU itself has likely suffered an internal failure and must be replaced.

7. 7

   Program new ECU

   If a new ECU is installed, it may require EOL (End of Line) programming via FENDIAS to sync with the tractor's main enhanced control unit.