Fendt 1.2.71 – A051 - ECU, Engine Control Unit (Bosch EDC 7): Begin of injection period in cylinder 2 outside target range or missing

The engine control unit is not detecting the correct injection timing or fuel delivery event for the second cylinder.

• 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
• 300 Vario COM III
• 400 Vario COM III
• 700 Vario COM III
• 800 Vario COM III
• 900 Vario COM III
• 309 Vario
• 310 Vario
• 311 Vario
• 312 Vario
• 712 Vario
• 714 Vario
• 716 Vario
• 724 Vario

1. 1

   Connect the SERDIA diagnostic tool to confirm the presence of FC:0019 (Cylinder 2 injection period fault)

2. 2

   Inspect the wiring harness between the A051 EDC 7 ECU and the cylinder 2 injector for cable breaks, chafing, or short circuits

3. 3

   Check fuel rail pressure to ensure it is within the setpoint range, as pressure drops can trigger injection timing faults

4. 4

   Perform a cylinder compression test or an electronic cylinder balance/misfire test via diagnostic software to isolate electrical versus mechanical issues

1. 1

   Disconnect Power

   Disconnect the tractor's battery to prevent electrical spikes before working on the EDC 7 ECU or the fuel injection harness.

2. 2

   Repair Wiring

   If the diagnostic checks revealed a short circuit or cable break in the cylinder bank 2 wiring, repair or replace the affected section of the injector harness.

3. 3

   Replace the Injector

   If the wiring tests good, the cylinder 2 fuel injector is likely faulty and must be removed and replaced. Ensure the fuel system is kept immaculately clean during this process to prevent contamination.

4. 4

   Reassembly and Bleeding

   Install the new injector, reconnect the fuel lines and electrical connectors, and bleed the fuel system if required by the specific engine manual.

5. 5

   Clear Codes and Calibrate

   Reconnect the battery and connect the SERDIA diagnostic tool. Clear the FC:0019 fault code from the A051 ECU.

6. 6

   EOL Programming

   Enter the new injector's calibration code (IMA code) into the engine control unit so the EDC 7 can adjust the injection timing and duration for the new component.