Massey Ferguson A.31.11 – Onboard Diagnostic System / Main Implement/Hydraulic Controller: External Hydraulic Valve 3 Issue

Malfunction, electrical fault, or communication error with the third external hydraulic remote valve (spool valve). The system has detected that the valve is either not responding to commands, has an open/short circuit in its solenoid coil, or is experiencing a mechanical/hydraulic pressure deviation.

• 5710SL
• 5711SL
• 5712SL
• 5713SL
• T4
• 4707
• 4708
• 4709
• 4710
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626
• 7714
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7722S
• 7724
• 7724S
• 7726
• 7726S

1. 1

   Inspect the wiring harness leading to External Valve 3 for rub points, damaged wires, or corrosion in the connector

2. 2

   Use a multimeter to check the resistance of the Valve 3 solenoid coil for an open circuit or a short to ground

3. 3

   Verify that the solenoid is receiving the correct reference voltage from the controller when the valve is commanded to open/close

4. 4

   Check the hydraulic fluid level and condition, as low fluid or clogged hydraulic filters can cause pressure drops that trigger valve performance codes

5. 5

   Perform a swap test: swap the electrical connector from Valve 3 to Valve 2. If the fault code changes to Valve 2, the issue is in the wiring/controller. If the fault remains on Valve 3, the solenoid or valve itself is faulty

1. 1

   Depressurize the System

   Turn off the tractor and cycle the hydraulic remote levers/buttons to relieve any residual hydraulic pressure in the system.

2. 2

   Clean the Area

   Thoroughly clean the external hydraulic valve block at the rear of the tractor to prevent dirt from entering the hydraulic system.

3. 3

   Disconnect Electricals

   Unplug the wiring harness connector from the Valve 3 solenoid.

4. 4

   Remove the Solenoid/Valve

   Depending on the specific model, you may be able to unbolt just the electronic solenoid actuator from the top/side of the spool valve. If the mechanical spool is sticking, the entire Valve 3 slice must be unbolted from the hydraulic stack.

5. 5

   Install the New Component

   Fit the new solenoid or valve slice. Ensure all O-rings between the valve slices are properly seated and lubricated with clean hydraulic fluid.

6. 6

   Reassemble and Torque

   Torque the valve block tie-bolts to the manufacturer's specification.

7. 7

   Reconnect and Test

   Reconnect the electrical harness. Start the tractor, top up the hydraulic fluid if any was lost, and test the operation of Remote 3.

8. 8

   Clear Codes

   Use a compatible Massey Ferguson diagnostic tool to clear the 0A.31.11 code from the system.