Massey Ferguson 1076.14 – Engine Control Unit (ECU): Open Circuit On Fuel Solenoid On High Pressure Pump

The Engine Control Unit (ECU) has detected an open circuit in the electrical pathway to the fuel solenoid located on the high-pressure fuel pump. This break in the electrical connection prevents current from flowing to the solenoid, inhibiting its ability to regulate fuel volume within the high-pressure pump. This condition prevents proper operation of the fuel solenoid and will likely affect engine performance or prevent the engine from starting.

• 4710
• 7724S
• 5712SL
• Interim Tier 4 (2012-2015)
• 7722
• 7722S
• 7615
• 5613
• 5713SL
• 7720S
• 7716
• 7718
• T4
• 7715
• 5710SL
• 7726
• 7616
• 7618
• 5608
• 4708
• 7619
• 7626
• 7726S
• 7624
• 4707
• 4709
• 5711SL
• 7614
• 7718S
• 5610
• 7620
• 7719
• 7714
• 7716S
• T4 (2015-2021)
• 5612
• 7622
• 7720
• Tier 4 (2015-2021)
• 5611
• 7715S
• 5609
• 7724

1. 1

   Inspect the wiring harness running from the Engine ECU to the high-pressure fuel pump for chafed wires, rodent damage, or melted insulation.

2. 2

   Disconnect the plug at the fuel solenoid and check for pushed-back pins, corrosion, or moisture inside the connector.

3. 3

   Using a multimeter, check the continuity of the actuator wires between the ECU harness connector and the solenoid connector to rule out a broken wire.

4. 4

   Measure the resistance across the pins of the fuel solenoid itself. If the multimeter reads 'OL' (Open Loop) or infinite resistance, the internal coil has failed.

1. 1

   Safety First

   Disconnect the tractor's battery to prevent electrical shorts. Ensure the engine is cool, as the fuel system operates under extreme pressure (up to 23,500 PSI). Caution: Never crack open high-pressure lines while the engine is cranking or running.

2. 2

   Clean the Area

   Thoroughly clean the exterior of the high-pressure fuel pump and the base of the solenoid with brake cleaner. It is critical that no dirt or debris enters the high-pressure pump during removal.

3. 3

   Disconnect

   Unplug the electrical connector from the fuel solenoid.

4. 4

   Removal

   Remove the mounting screws (usually Torx or Allen head) securing the solenoid to the pump housing. Carefully twist and pull the solenoid straight out.

5. 5

   Preparation

   Inspect the bore on the pump for any debris. Take the new fuel solenoid and lubricate its O-rings with clean diesel fuel to prevent tearing during installation.

6. 6

   Installation

   Push the new solenoid firmly into the pump housing until it seats flush. Install and torque the mounting screws to the manufacturer's specifications.

7. 7

   Reassembly

   Reconnect the electrical harness plug. Reconnect the battery.

8. 8

   Prime and Clear

   Turn the key to the 'ON' position to allow the low-pressure lift pump to prime the system. Connect a diagnostic tool to clear the 001076.14 fault code from the ECU, then start the engine and check for leaks.