Fendt 1.2.25 – Engine Control Unit (EDC 7): Y006 - Solenoid valve, engine brake

Cable break or short circuit (brake in wiring or short circuit to ground/battery) in the circuit controlling the engine brake solenoid valve, resulting in the engine brake not being able to be actuated.

• 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)

1. 1

   Consult the Fendt electrical wiring diagram 'Sheet 36' or the 'Deutz engine control' circuit diagram

2. 2

   Locate the Y006 solenoid valve on the right side of the tractor (mounted on the engine bulkhead or hydraulic valve block)

3. 3

   Inspect the separation point at connector X1679 on the Y006 valve

4. 4

   Test the wiring harness between the EDC 7 control unit and the Y006 solenoid for continuity, cable breaks, or short circuits to ground/battery (wiring cause)

5. 5

   Measure the resistance of the Y006 solenoid coil to determine if the valve itself has failed internally (component failure cause)

1. 1

   Safely park the tractor, turn off the ignition, and disconnect the battery to prevent electrical spikes during repair.

2. 2

   Gain access to the Y006 solenoid valve.

   On some models, this requires removing the right rear wheel and taking off the metal guard to access the hydraulic valve block.

3. 3

   Disconnect the X1679 electrical connector at the solenoid valve.

4. 4

   If the diagnostic tests revealed a wiring issue, repair the broken wire or resolve the short circuit in the harness.

5. 5

   If the wiring is intact but the valve coil is faulty, unbolt and remove the Y006 engine brake solenoid valve.

6. 6

   Install the replacement solenoid valve and torque to OEM specifications.

7. 7

   Reconnect the X1679 electrical connector and reinstall any removed guards or wheels.

8. 8

   Reconnect the battery.

9. 9

   Connect the Fendt SERDIA diagnostic tool and clear the fault code memory (delete error FC:0052).

10. 10

    Start the tractor and test the engine brake functionality to confirm the repair.