Massey Ferguson 06.01.10 – TRANS1: Issue With Rear PTO Shaft Output Speed Sensor Signal Dyna VT

The tractor's computer is not receiving a valid, steady, or accurate RPM signal from the rear Power Take-Off (PTO) output speed sensor. Without this signal, the tractor cannot properly monitor PTO speed, which is critical for automated implement timing, overspeed protection, and proper Dyna VT transmission operation.

• 7714
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7722S
• 7724
• 7724S
• 7726
• 7726S
• Tier 4 (2015-2021)
• 6713 S
• 6714 S
• 6715 S
• 6716 S
• 6718 S
• 8727 S
• 8730 S
• 8732 S
• 8735 S
• 8737 S
• 8740 S
• 6614
• 6615
• 6616
• 7615–7624
• 7485–7499
• 6S.135 through 6S.180

1. 1

   Thoroughly clean the sensor connector and inspect the wiring harness for chafing, breaks, or corrosion caused by oil mist, dirt, and vibration near the PTO.

2. 2

   Ensure the sensor has the proper clearance from the internal tone wheel, as an incorrect air gap will cause signal dropouts.

3. 3

   Inspect the tone wheel (visible when the sensor is removed) for missing teeth, damage, or heavy debris buildup.

4. 4

   Engage the PTO at different speeds and monitor the live data to see if the signal drops out intermittently or is completely dead.

1. 1

   Locate the Sensor

   Find the PTO speed sensor mounted at the rear of the tractor, threaded into the housing near the PTO output shaft.

2. 2

   Disconnect

   Carefully unplug the electrical connector from the tractor's wiring harness.

3. 3

   Remove the Old Sensor

   Unthread the faulty magnetic/inductive sensor from its mounting port.

4. 4

   Clean and Inspect

   Clean the mounting threads and the surrounding area to prevent dirt from entering the housing. Briefly inspect the tone wheel through the mounting hole.

5. 5

   Install the New Sensor

   Thread the new sensor into the mount. Ensure it is seated correctly to maintain the critical factory air gap relative to the tone wheel.

6. 6

   Reconnect

   Plug the sensor back into the factory wiring harness (direct plug-in, no rewiring required).

7. 7

   Clear Codes & Test

   Clear the 06.01.10 fault code from the TRANS1 module. Engage the PTO and cycle through different speeds to verify that the display shows steady, accurate RPM readings.