Massey Ferguson 06.03.45 – TRANS1: Issue With Values Received From Rear PTO Speed Sensors Dyna VT (TRANS1)

This code indicates that the transmission controller is receiving erratic, missing, or out-of-range signals from the Rear PTO Speed Sensor. Because the system cannot accurately read the rotational speed of the rear Power Take-Off (PTO) shaft, it triggers this fault to prevent potential mechanical damage or unsafe PTO operation.

• 7714
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7722S
• 7724
• 7724S
• 7726
• 7726S
• Tier 4 (2015-2021)

1. 1

   Visual Inspection: Locate the Rear PTO Speed Sensor on the rear transmission/PTO housing. Inspect the wiring harness and connector for physical damage, frayed wires, or heavy corrosion.

2. 2

   Circuit Testing: Use a multimeter to check the sensor circuit for continuity. Test for an open circuit, a short to ground, or a short to a +12V power supply.

3. 3

   Sensor Tip Inspection: Remove the sensor and inspect the magnetic tip. Because it sits in the transmission housing, it can attract metal shavings over time, which distorts the speed signal. Cleaning the tip may resolve the issue.

4. 4

   Module Connections: Ensure the main harness connections at the TRANS1 module are secure and free of moisture.

1. 1

   Park the tractor on a level surface, turn off the engine, and engage the parking brake.

   Park the tractor on a level surface, turn off the engine, and engage the parking brake.

2. 2

   Clean the area around the Rear PTO Speed Sensor on the rear transmission housing to prevent dirt from entering the system.

   Clean the area around the Rear PTO Speed Sensor on the rear transmission housing to prevent dirt from entering the system.

3. 3

   Disconnect the electrical wiring harness connector from the sensor.

   Disconnect the electrical wiring harness connector from the sensor.

4. 4

   Remove the retaining bolt securing the sensor to the housing.

   Remove the retaining bolt securing the sensor to the housing.

5. 5

   Carefully pull the old sensor out of the port.

   Carefully pull the old sensor out of the port.

6. 6

   Inspect the internal tone ring/gear through the sensor port for any obvious damage or heavy debris.

   Inspect the internal tone ring/gear through the sensor port for any obvious damage or heavy debris.

7. 7

   Lightly lubricate the O-ring on the new PTO speed sensor with clean transmission fluid.

   Lightly lubricate the O-ring on the new PTO speed sensor with clean transmission fluid.

8. 8

   Insert the new sensor into the housing and secure it with the retaining bolt (torque to OEM specifications).

   Insert the new sensor into the housing and secure it with the retaining bolt (torque to OEM specifications).

9. 9

   Reconnect the electrical harness, ensuring it clicks into place securely.

   Reconnect the electrical harness, ensuring it clicks into place securely.

10. 10

    Turn on the tractor and clear the DTC 06.03.45 using a diagnostic tool or the tractor's onboard diagnostic menu.

    Turn on the tractor and clear the DTC 06.03.45 using a diagnostic tool or the tractor's onboard diagnostic menu.

11. 11

    Engage the PTO to verify that the speed reads correctly on the cab display and that the fault code does not return.

    Engage the PTO to verify that the speed reads correctly on the cab display and that the fault code does not return.