Massey Ferguson 1B.02.06 – Linkage/PTO/Light Module On The B-Pillar: CAN BUS Issue With The Linkage/PTO/Light Module On The B-Pillar

Communication failure on the Controller Area Network (CAN) bus. The main tractor network is unable to send or receive data from the specific control module located on the cab's B-pillar, which is responsible for managing the rear linkage (hitch), Power Take-Off (PTO), and lighting systems.

• 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
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626

1. 1

   Inspect the CAN BUS wiring harness routing to the right-hand B-pillar for any signs of chafing, pinching, or breaks.

2. 2

   Disconnect the plug at the Linkage/PTO/Light Module and check for loose, bent, pushed-back, or corroded pins.

3. 3

   Verify that the B-pillar module is receiving proper 12V power and has a solid ground connection.

4. 4

   Use a multimeter to test the CAN High and CAN Low lines at the module connector for proper network resistance (typically 60 ohms across the network when powered down).

1. 1

   Disconnect Power

   Turn off the ignition and disconnect the tractor's battery to prevent electrical shorts during the repair.

2. 2

   Access the Module

   Locate the right-hand B-pillar inside the tractor cab. Carefully remove the interior plastic trim panels covering the B-pillar to expose the Linkage/PTO/Light Module and its wiring harness.

3. 3

   Repair Wiring (If Applicable)

   If the diagnostic checks revealed damaged CAN wiring or a faulty connector, repair the broken wires or replace the damaged connector pins.

4. 4

   Replace the Module (If Applicable)

   If the wiring, power, ground, and CAN bus resistance all test normal, the internal CAN transceiver in the module has likely failed. Unbolt the Linkage/PTO/Light Module from the B-pillar and disconnect the harness.

5. 5

   Install New Module

   Connect the wiring harness to the replacement module and mount it securely to the B-pillar.

6. 6

   Reassembly

   Reinstall the B-pillar interior trim panels.

7. 7

   Reconnect and Clear

   Reconnect the battery. Connect a compatible Massey Ferguson diagnostic tool to the tractor, clear the 1B.02.06 fault code, and test the linkage, PTO, and lighting functions to verify the repair. (Note: A new module may require configuration/calibration via the dealer diagnostic tool to pair it with the tractor's specific options).