Fendt 1E.1.25 – Engine Control Unit (ECU) / EDC 7: Y006 - Solenoid valve, engine brake

Cable break or short circuit in the wiring associated with the Y006 solenoid valve (engine brake).

• 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)
• Fendt 916 Vario (COM III)
• Fendt 920 Vario (COM III)
• Fendt 922 Vario (COM III)
• Fendt 924 Vario (COM III)
• Fendt 927 Vario (COM III)
• Fendt 930 Vario (COM III)
• Fendt 933 Vario (COM III)
• Fendt 936 Vario (COM III)

1. 1

   Visually inspect the wiring harness running from the EDC 7 engine control unit to the Y006 solenoid valve for obvious signs of chafing, melting, or physical breaks.

2. 2

   Disconnect the Y006 valve and check the electrical connector for corrosion, moisture ingress, or pushed-out pins.

3. 3

   Using a multimeter and the 'Deutz engine control' circuit diagram, test the wiring between the ECU and the valve for continuity (to rule out a cable break) and check for a short to ground or short to power.

4. 4

   Measure the internal resistance of the Y006 solenoid valve coil to ensure it has not failed internally (which can simulate a short or open circuit).

1. 1

   Power Down

   Turn off the tractor and disconnect the battery to prevent electrical spikes during repair.

2. 2

   Locate the Valve

   Locate the Y006 engine brake solenoid valve, typically mounted near the exhaust brake flap assembly on the engine.

3. 3

   Repair Wiring

   If the diagnostic checks revealed a broken wire or short in the harness, splice and repair the damaged section using weather-sealed connectors, or replace the affected harness section.

4. 4

   Replace Valve

   If the wiring tests good but the solenoid coil fails a resistance test, remove the retaining hardware for the Y006 solenoid valve, disconnect the pneumatic/hydraulic lines (if applicable), and install the replacement valve.

5. 5

   Clear Codes

   Reconnect the battery. Connect a diagnostic laptop with SERDIA (the Deutz/Fendt diagnostic software) to the tractor's diagnostic port.

6. 6

   Delete Error

   Use SERDIA to clear the stored fault code (FC:0052).

7. 7

   Test Operation

   Start the tractor and test the engine brake functionality to ensure the code does not return.