Fendt B.1.13 – A002 - ECU, enhanced control: Electrical fault in TI automatic operation

This code indicates an internal electrical or communication fault within the Variotronic TI (Teach-In) automated headland management system, resulting in the Teach-in function not operating.

• 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 Vario series
• Fendt 400 Vario series
• Fendt 700 Vario series
• Fendt 800 Vario series
• Fendt 900 Vario series
• Fendt 300 Vario series COM III
• Fendt 400 Vario series COM III
• Fendt 700 Vario series COM III
• Fendt 800 Vario series COM III
• Fendt 900 Vario series COM III

1. 1

   Verify the voltage supply to the CAN-Bus on the A013 fuse board, specifically checking fuses F040 and F041

2. 2

   Check the main separation point/connector X031 on the A002 ECU for loose pins, moisture, or corrosion

3. 3

   Test the wiring harness for continuity and shorts between the A002 ECU, the A004 Control Console, and the A008 Variotronic Terminal

1. 1

   Access the ECU

   Inside the tractor cab, remove the trim panel on the right-hand mudguard to expose the A002 Enhanced Control ECU.

2. 2

   Verify Power and Ground

   Using a multimeter, ensure the A002 ECU is receiving proper voltage from the A013 fuse board. Replace any blown fuses and trace for shorts if a fuse immediately pops.

3. 3

   Repair Wiring

   If continuity tests reveal a break in the CAN bus lines between the A002 ECU and the A008 terminal, repair the wiring harness at the affected separation point.

4. 4

   Software/Reprogramming

   If the wiring and power supply are intact, the fault may be an internal software or memory error within the ECU. The A002 ECU may require End-of-Line (EOL) reprogramming or a flash update via the FENDIAS diagnostic tool.

5. 5

   Component Replacement

   If reprogramming fails or the ECU has suffered a hard internal electrical failure, the A002 ECU must be replaced and subsequently programmed to the tractor.