Massey Ferguson 06.01.18 – TRANS1: Issue With Signal From PTO 1000 Button Dyna VT (TRANS1)

The tractor's onboard diagnostic system has detected an irregular, missing, or out-of-range electrical signal coming from the button/switch used to engage the 1000 RPM Power Take-Off (PTO) speed.

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

1. 1

   Inspect the PTO 1000 button (both in the cab and the external fender-mounted button, if equipped) for physical damage, sticking, or heavy dirt/debris.

2. 2

   Remove the switch and use a multimeter set to Ohms to test internal resistance (should show continuity when pressed and open circuit when released). Note: Some technicians recommend testing the switch under a small electrical load, as a switch might pass a basic continuity test but fail under actual operating loads.

3. 3

   Disconnect the switch and test the wiring harness leading back to the TRANS1 module for bare wires, corrosion at the connector pins, or a short-to-ground.

4. 4

   Verify that the tractor's charging system is delivering stable DC voltage (13.0V to 14.5V), as voltage drops can cause the transmission module to misinterpret switch signals.

1. 1

   Power Down

   Turn off the tractor ignition and disconnect the negative battery cable to prevent electrical shorts.

2. 2

   Access the Switch

   Carefully pry up or unscrew the side console trim panel or armrest housing where the PTO 1000 rocker switch is mounted.

3. 3

   Disconnect

   Unplug the wiring harness connector from the back of the faulty PTO switch.

4. 4

   Remove the Switch

   Depress the plastic retaining tabs on the sides of the switch body and push it upward/outward through the mounting hole.

5. 5

   Install the New Part

   Push the new PTO 1000 switch into the panel until the retaining clips snap securely into place.

6. 6

   Reconnect

   Plug the wiring harness back into the new switch. Ensure the connector is seated firmly and the locking tab clicks.

7. 7

   Reassemble and Test

   Reinstall the console trim panel, reconnect the battery, and turn on the tractor. Clear the 06.01.18 fault code using a diagnostic tool, then test the PTO 1000 engagement to ensure the code does not return.