Fendt B.1.B0 – A002 - ECU, enhanced control: A002 - ECU, enhanced control — Read error during Teach-in (program run)

The tractor's enhanced control module has encountered a memory read error while executing the Variotronic TI "Teach-in" sequence (the automated headland management system). The Teach-in function becomes non-operational. The tractor can generally still be driven, but automated sequences cannot be executed or recorded.

• 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
• Farmer 400 Vario
• Favorit 700 Vario
• Favorit 900 Vario
• Fendt 300 Vario series
• Fendt 400 Vario series
• Fendt 700 Vario series
• Fendt 800 Vario series
• Fendt 900 Vario series

1. 1

   Cycle the tractor's ignition OFF, wait a few moments, and switch it back ON to check if the error is currently active or just stored in history.

2. 2

   Verify the CAN-Bus voltage supply to the A002 ECU by inspecting fuses F040 and F041 on the A013 fuse board, as voltage drops can cause memory read/write errors.

3. 3

   Access the diagnostics menu on the terminal to clear stored fault messages (or press keys D, B, and C simultaneously on older Vario terminals), then test the Teach-in function again.

4. 4

   Determine via diagnostics if the error is an EEPROM memory error or a system memory error within the A002 module.

1. 1

   Reboot System

   Switch the ignition OFF and ON. If the error does not return, it was a temporary software glitch.

2. 2

   Software Flash (EOL)

   If the error re-occurs, reload the End-of-Line (EOL) programming into the A002 - ECU, enhanced control using FENDIAS.

3. 3

   Hardware Replacement

   If the error still occurs after a successful EOL reprogramming, the internal memory (EEPROM) of the A002 ECU has physically failed. You must replace the A002 - ECU, enhanced control.