Massey Ferguson 06.03.E4 – TRANS1: Issue With Rear PTO On/Off Solenoid Power Supply Dyna VT (TRANS1)

The onboard diagnostic system has detected an irregularity or malfunction regarding the electrical power supply to the rear Power Take-Off (PTO) on/off solenoid valve. This typically indicates an open circuit, a short circuit, or a failed solenoid coil preventing the transmission controller from properly actuating the PTO.

• 7714
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7722S
• 7724
• 7724S
• 7726
• 7726S
• Tier 4 (2015-2021)
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626

1. 1

   Inspect the wiring harness and electrical connector at the PTO solenoid for dirt, moisture, or corrosion.

2. 2

   Verify that the TRANS1 module is sending the correct voltage to the solenoid when the PTO switch is engaged.

3. 3

   Test the solenoid coil for an internal short or open circuit.

4. 4

   Inspect hydraulic fluid and filters, as contaminated fluid can cause the mechanical valve to stick and burn out the solenoid.

1. 1

   Preparation

   Park the tractor on a level surface, turn off the engine, and relieve all hydraulic pressure.

2. 2

   Disconnect Power

   Disconnect the tractor's battery to prevent electrical shorts during the repair.

3. 3

   Locate and Disconnect

   Locate the PTO solenoid control valve on the transmission block. Carefully unplug the electrical connector.

4. 4

   Remove the Valve

   Remove the retaining hardware and extract the old solenoid valve.

5. 5

   Clean the Area

   Thoroughly clean the mounting surface to ensure no dirt or contamination enters the hydraulic system.

6. 6

   Install the New Valve

   Insert the new solenoid valve and secure it with the retaining hardware.

7. 7

   Reconnect

   Plug the electrical connector back in (ensure it is clean and free of corrosion) and reconnect the battery.

8. 8

   Filter Maintenance

   It is highly recommended to change the hydraulic filter at this time to prevent future contamination-related failures.

9. 9

   Test

   Start the tractor and test the PTO engagement to confirm the fault code is cleared and the system operates normally.