Massey Ferguson A.21.24 – Dash / Mid Mount Valve Module: External Hydraulic Valve 2 Issue

Fault in the circuit for the second external hydraulic remote (spool valve). The underlying condition is typically a connection problem on the hydraulic valve, a communication failure on the CAN bus, or an issue with the spool position sensor value.

• 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

   Retrieve Codes: Use a compatible diagnostic tool or interface device to pull the exact alphanumeric DTC (e.g., 0A.2X.24) to confirm the fault is isolated to Valve 2.

2. 2

   Inspect Connections: Check the electrical harness and connector at External Hydraulic Valve 2 for corrosion, backed-out pins, or wire chafing, as the system specifically flags connection problems.

3. 3

   Check Sensor Values: Use the diagnostic tool to monitor the Spool Position Sensor value for Valve 2. Look for erratic, out-of-range, or dead readings.

4. 4

   Verify Module Communication: Ensure the Mid Mount Valve Module is receiving power and communicating properly with the Dash.

1. 1

   Locate valve

   Locate External Hydraulic Valve 2 (typically found in the rear remote stack or the mid-mount valve block, depending on tractor configuration).

2. 2

   Clean and test connections

   Disconnect the wiring harness from the valve's spool position sensor and solenoid. Clean the contacts with electrical contact cleaner and apply dielectric grease. Reconnect and test.

3. 3

   Replace sensor

   If the code persists and the spool position sensor value is flagged as faulty (e.g., related codes M17/M18/M19), replace the Spool Position Sensor.

4. 4

   Replace solenoid or valve

   If the sensor is functioning but the valve fails to actuate or communicate, replace the External Hydraulic Valve 2 solenoid or the complete spool valve section.

5. 5

   Clear codes and verify

   Clear the DTCs using a diagnostic tool and cycle the hydraulic remote to verify the repair.