Massey Ferguson 1B.X.05 – Linkage/PTO/Light Module: Internal Issue With The Linkage/PTO/Light Module On The B-Pillar

Hardware or internal logic failure within the electronic keypad/module located on the right-hand B-pillar of the tractor cab. This module is responsible for controlling the electronic linkage, PTO (Power Take-Off) speeds/engagement, and working lights.

• 7724S
• 5712SL
• 7722
• 7722S
• 5713SL
• 7720S
• 7716
• 7718
• T4
• 7715
• 5710SL
• 7726
• 7726S
• 5711SL
• 7718S
• 7719
• 7714
• 7716S
• 7720
• Tier 4 (2015-2021)
• 7715S
• 7724
• 4707
• 4708
• 4709
• 4710
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 6700 Dyna 6
• 6700R
• 6S
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626
• 8700 S

1. 1

   Check LIN BUS communication between the Linkage/PTO/Light Module and the B-Pillar Button Panel

2. 2

   Inspect CAN BUS wiring to the B-Pillar module for chafed wires or loose pins at the connector

3. 3

   Ensure the module is receiving proper voltage (power and ground), as a voltage drop can cause internal logic faults

4. 4

   Verify that the module hasn't lost its stored configuration (a dealer may need to attempt a re-flash or configuration reset using the AGCO Electronic Diagnostic Tool)

1. 1

   Disconnect Power

   Disconnect the tractor's battery to prevent electrical spikes during removal.

2. 2

   Access the Module

   Locate the Linkage/PTO/Light Module on the right-hand B-pillar inside the cab.

3. 3

   Remove Trim

   Carefully pry away the B-pillar plastic trim/cowl to expose the mounting screws for the keypad panel.

4. 4

   Disconnect Harnesses

   Unscrew the module and carefully pull it forward. Disconnect the main electrical harness (containing CAN/LIN and power lines) from the back of the unit.

5. 5

   Install Replacement

   Connect the wiring harness to the new or remanufactured B-pillar module.

6. 6

   Reassemble

   Secure the module to the B-pillar and snap the trim back into place.

7. 7

   Reconnect Battery & Calibrate

   Reconnect the battery. Because this module stores configuration data for the hitch and PTO, a new module will likely require programming/calibration using the AGCO dealer diagnostic tool to pair it with the tractor's main ECU.

8. 8

   Clear Codes

   Clear the 1B.X.05 fault code and test the PTO, linkage lift/lower, and lighting functions.