Fendt 1E.1.72 – A051 - ECU, engine control unit (EDC 7): Start of injection period in cylinder 3 outside setpoint range or absent

The engine control unit has detected that the fuel injector for cylinder 3 is either not firing at the commanded time, or the injection event is completely missing.

• 309 Vario COM III
• 310 Vario COM III
• 311 Vario COM III
• 312 Vario COM III
• 922 Vario COM III
• 924 Vario COM III
• 927 Vario COM III
• 930 Vario COM III
• 933 Vario COM III
• 936 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) 919
• Fendt 900 Vario (COM III) 922
• Fendt 900 Vario (COM III) 924
• Fendt 900 Vario (COM III) 927
• Fendt 900 Vario (COM III) 930
• Fendt 900 Vario (COM III) 933
• Fendt 900 Vario (COM III) 936

1. 1

   Connect the SERDIA diagnostic tool to confirm the presence of internal fault code FC:001A

2. 2

   Inspect the wiring harness between the A051 EDC 7 control unit and the cylinder 3 injector (Y097) for chafing, breaks, or short circuits

3. 3

   Disconnect the plug at the cylinder 3 injector and check for corrosion, pushed-out pins, or poor terminal tension

4. 4

   Perform an electrical resistance test on the cylinder 3 injector solenoid to determine if the injector has failed internally

1. 1

   Resolve Wiring Issues

   If the diagnostic checks reveal a wiring fault between the A051 ECU and the Y097 injector, repair or replace the affected harness section.

2. 2

   Replace the Injector

   If the wiring is intact but the injector fails electrical testing (or mechanically fails to inject fuel), remove and replace the cylinder 3 fuel injector.

3. 3

   Clear Faults

   Once the physical repair is complete, use the SERDIA diagnostic software to clear the fault code from the A051 EDC 7 memory.

4. 4

   Test Run

   Run the engine and monitor the start of injection parameters via SERDIA to ensure cylinder 3 is now operating within the target setpoint range.