Massey Ferguson 06.00.E3 – TRANS1: Issue With Rear PTO On/Off Solenoid Power Supply Dyna VT

The transmission controller has detected an electrical irregularity, such as an open circuit, short circuit, or abnormal current draw, in the circuit that supplies power to the solenoid responsible for engaging and disengaging the rear Power Take-Off (PTO) clutch.

• 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
• 6700 Series
• 8600 Series

1. 1

   Inspect the wiring harness from the TRANS1 module to the rear PTO solenoid for chafed wires, melted insulation, or breaks that could cause a short or open circuit.

2. 2

   Disconnect the plug at the PTO solenoid and inspect the pins for corrosion, moisture, or loose connections.

3. 3

   Use a multimeter to check the resistance across the solenoid coil terminals to ensure it is not burnt out (infinite resistance/open circuit).

4. 4

   Verify the transmission/hydraulic oil level and filter condition, as contaminated fluid can cause the internal valve spool to stick and overwork the solenoid.

1. 1

   Prepare tractor

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

2. 2

   Disconnect power

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

3. 3

   Locate solenoid

   Locate the PTO control valve and solenoid mounted externally on top of the rear frame transmission housing.

4. 4

   Disconnect harness

   Unplug the electrical connector from the PTO solenoid.

5. 5

   Remove solenoid or valve

   If replacing just the coil, remove the retaining nut at the end of the solenoid stem and slide the old coil off. If replacing the entire valve assembly, unbolt the valve body from the transmission housing.

6. 6

   Clean mounting area

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

7. 7

   Install new part

   Slide the new coil onto the stem or bolt down the new valve assembly and secure it.

8. 8

   Reconnect harness

   Plug the electrical harness back in, ensuring the weather seal is seated properly.

9. 9

   Test operation

   Reconnect the battery, start the tractor, and test the rear PTO engagement to confirm the fault code is cleared and the PTO operates smoothly.