Massey Ferguson 06.01.55 – TRANS1: Issue With Signal From PTO Neutral Button Dyna VT

The system has detected an invalid, missing, or out-of-range electrical signal from the PTO (Power Take-Off) neutral button/switch located on the PTO/linkage console. This prevents the system from verifying whether the PTO is safely in neutral, which can disable PTO engagement as a safety precaution.

• 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 PTO neutral button on the PTO/linkage console for physical damage, sticking, or debris preventing full travel.

2. 2

   Inspect the wiring harness leading from the PTO neutral switch to the TRANS1 module. Look for chafed wires, loose connections, or corrosion at the connector pins.

3. 3

   Using a multimeter, test the switch for proper continuity when pressed and released. Verify that the reference voltage from the TRANS1 controller is reaching the switch.

4. 4

   Perform a bypass test using a jumper wire to temporarily bypass the switch to see if the system registers the neutral state. If the system responds correctly with the jumper in place, the switch is confirmed faulty.

1. 1

   Power Down

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

2. 2

   Access the Console

   Carefully remove the trim or access panels on the right-hand PTO/linkage console to expose the underside of the PTO switches.

3. 3

   Disconnect

   Unplug the electrical connector from the back of the PTO neutral button/switch.

4. 4

   Remove

   Unclip or unthread the retaining collar holding the faulty switch in the console and pull the switch out.

5. 5

   Install

   Insert the replacement PTO neutral switch into the console and secure it.

6. 6

   Reconnect

   Plug the electrical connector back into the new switch. Reassemble the console trim.

7. 7

   Clear Codes

   Reconnect the battery. Connect a diagnostic tool to the tractor's OBD port and clear the 06.01.55 fault code from the TRANS1 module.

8. 8

   Test

   Start the tractor and cycle the PTO controls to ensure the neutral signal is recognized and the fault does not return.