Massey Ferguson A.2X.13 – Mid Mount Valve Module or Autotronic ECU: External Hydraulic Valve 2 Issue
Issue description
Malfunction associated with the second external hydraulic spool valve (SCV 2). The underlying condition is typically an electrical connection problem on the hydraulic valve, an issue with the spool position sensor value, or a solenoid fault (such as an open circuit or short to ground). When this fault is detected, the system will often block all hydraulic valves as a safety precaution.
Applies to these machines
35 machines- 5710SL
- 5711SL
- 5712SL
- 5713SL
- T4
- 4707
- 4708
- 4709
- 4710
- 5608
- 5609
- 5610
- 5611
- 5612
- 5613
- 6600 Series
- 6700 Series
- 7614
- 7615
- 7616
- 7618
- 7619
- 7620
- 7622
- 7624
- 7626
- 7714
- 7715
- 7716
- 7718
- 7719
- 7720
- 7722
- 7724
- 7726
Check the cause
Inspect the wiring harness leading to External Hydraulic Valve 2 for rub points, open circuits, or shorts to ground
Check the coil resistance and ground integrity on the valve's solenoid connector
Verify the spool position sensor value using a diagnostic tool to see if the sensor is reading out of range or has failed
Verify that there is communication between the dash and the Mid Mount Valve Module
Ensure the valve is not physically stuck and that hydraulic pressure is within normal operating limits
Repair steps
Inspect and Repair Wiring
If the diagnostic checks reveal a damaged spool valve cable or poor connector pin fitment, repair the wiring or replace the spool valve cable.
Replace Faulty Components
If the wiring is intact but the solenoid or position sensor has failed, you will need to replace the specific solenoid coil or the entire electric spool slice (valve block).
Clear the Code
Once the physical repair is made, you must delete the error code from the control unit dashboard.
Unlock the Valves
Because the control unit blocks all valves when a critical hydraulic error is thrown, you must manually unlock the valves via the dashboard or diagnostic interface after clearing the code to restore functionality.
Parts you might need
(4)Electric Spool Slice (Hydraulic Electric Spool Valve 4-Pin)
3797234M6Alternate/superseded part numbers include 3797234M5, 3797234M4, 3796930M12, and R917007388. Fits 6400, 6600, 7400, and 7600 series. Note: A new electric spool slice will need to be programmed to the tractor.
Spool Valve Cable
3787587M96Fits 6600, 6700, 7600, and 7700 series.
Spool Valve Cable
4270845M96Also listed under short code 56552 or 56731. Fits 6600, 6700, 7600, and 7700 series.
Pilot Pressure Control for Electric Spool Valve
R917008801
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