Fendt 09.1.E0 – A050 basic control unit: Y070 - EHR cut-off valve, front does not report to the CAN bus

The Y070 EHR cut-off valve (front) does not report to the CAN bus (or V-bus). As a safety measure, the valve automatically moves to neutral and locks, disabling the front power lift (FKH).

• 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 and SCR models)
• Fendt 800 Vario (COM III and SCR models)
• Fendt 900 Vario (COM III and SCR models)

1. 1

   Inspect the wiring harness leading to the Y070 valve for breaks, chafing, or short circuits

2. 2

   Disconnect the plug at the Y070 valve and inspect the pins for corrosion, moisture, or poor contact

3. 3

   Verify that the valve is receiving the correct operating voltage and check associated fuses (e.g., A013, fuse 12)

4. 4

   Test the CAN bus / V-bus communication lines at the valve connector to ensure the A050 control unit is successfully transmitting and receiving data

1. 1

   Preparation

   Turn off the tractor engine. Relieve all hydraulic pressure from the system (lower the front power lift and actuate the valves to release residual pressure).

2. 2

   Locate the Valve

   The Y070 valve is located on the central valve block, typically on the right side of the tractor (access may require detaching the side panel).

3. 3

   Removal

   Disconnect the electrical connector from the Y070 valve. Unbolt and remove the faulty cut-off valve from the central control block.

4. 4

   Installation

   Install the new genuine Fendt Y070 cut-off valve. Torque the mounting bolts to the manufacturer's specifications and reconnect the electrical plug.

5. 5

   Clear Codes & Calibrate

   Turn the ignition on and use the tractor's terminal or the SERDIA diagnostic tool to clear the stored 09.1.E0 fault code. Depending on the tractor model, an End-Of-Line (EOL) programming or calibration routine may be required for the new valve to be recognized by the A050 control unit.