Fendt 1E.1.01 – EDC (Electronic Diesel Control) engine control unit: Input, battery, battery voltage outside setpoint range

The supply voltage to the controller has fallen outside the acceptable 8 V to 18 V range for longer than 10 seconds, preventing the tractor from starting.

• 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 200 V/F/P Vario series
• 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) series (e.g., 916, 922, 924, 927, 930, 933, 936)

1. 1

   Test battery voltage at the positive and negative terminals of the G001 battery (should be approx. 12 VDC off, 8 VDC cranking, 13.8 VDC running)

2. 2

   Check the power supply to the EDC control module to ensure there is no system failure or voltage drop

3. 3

   Inspect the 'Power supply +Ub' circuit and battery wiring for a short circuit to the battery or earth, or a break in the wiring

1. 1

   Inspect and Clean

   Inspect the G001 battery terminals and ground connections (e.g., the earth pin at the right entrance step where the battery case is located) for corrosion or loose connections. Clean and tighten as necessary.

2. 2

   Test the Battery

   Perform a load test on Battery 1. If the battery fails the load test or cannot maintain the required 12 VDC base voltage, it must be replaced.

3. 3

   Verify Wiring

   If the battery is healthy, trace the wiring harness from the battery to the EDC control module (A051) using the tractor's electrical schematic. Repair any broken wires or short circuits.

4. 4

   Clear the Fault

   Once the physical repair is complete, connect the Deutz SERDIA service diagnostics program to the tractor.

5. 5

   Delete Error

   Use SERDIA to clear the fault code (associated internal failure codes FC:0016, 0017) from the EDC memory.