Fendt 1.2.73 – A051 - ECU, engine control unit (EDC 7): Start of injection period in cylinder 4 outside setpoint range or absent

The engine control unit is detecting an anomaly with the fuel injection timing on cylinder 4, meaning the injector is either firing outside of its expected parameters or failing to fire entirely.

• 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)
• FENDT 700 Vario (COM III)
• FENDT 800 Vario (COM III)
• FENDT 900 Vario (COM III)

1. 1

   Use SERDIA diagnostic software to read fault (FC:001B) and attempt to delete the error

2. 2

   Verify the electrical connection between the A051 Engine ECU and the cylinder 4 injector

3. 3

   Test the cylinder 4 injector for mechanical or electrical failure

1. 1

   Connect the SERDIA diagnostic tool

   Confirm the presence of fault FC:001B.

2. 2

   Inspect the wiring harness and connectors

   Check the wiring harness and connectors between the EDC 7 engine control unit (A051) and the cylinder 4 fuel injector.

3. 3

   Replace the cylinder 4 fuel injector

   Replace the injector if the wiring is intact but the injection period remains outside the setpoint range or absent.

4. 4

   Delete the error code

   Use the SERDIA tool to delete the error code from the system once the physical repair is complete.