1B.01.01

Massey Ferguson 1B.01.01 – Linkage/PTO/Light Module: Issue With Configuration Stored In The Linkage/PTO/Light Module On The B-Pillar

Issue description

This indicates a memory, software, or configuration storage error within the module responsible for managing the tractor's rear linkage, PTO, and lighting systems.

Applies to these machines

  • 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

Check the cause

  1. Check for related accompanying codes such as 1B.01.02 (Issue When Storing Configuration), 1B.01.04 (LIN BUS Communication Issue), or 1B.00.05 (Internal Issue With The Module)

  2. Inspect the LIN BUS communication wiring harness and connectors between the module and the B-Pillar Button Panel for damage, corrosion, or loose pins

  3. Verify the module's software and configuration data using a dealer diagnostic tool (AGCO Electronic Diagnostic Tool) to see if it has lost data or needs re-flashing

Repair steps

  1. Connect the AGCO diagnostic tool to the tractor's diagnostic port.

  2. Attempt to clear the code and re-store/re-calibrate the configuration settings for the Linkage/PTO/Light Module.

  3. If the configuration cannot be stored (often accompanied by code 1B.01.02), or if an internal module failure is present, the physical Linkage/PTO/Light Module on the B-Pillar must be replaced.

  4. Remove the B-Pillar trim panels on the right-hand side of the cab to access the module.

  5. Disconnect the LIN BUS and power harnesses, swap the module, and use the diagnostic tool to program the new module to the tractor's specifications.

Parts you might need

(2)
  • Linkage/PTO/Light Module (B-Pillar)

    Parts are specific to the cab configuration (e.g., Essential vs. Efficient/Exclusive trims) and the tractor series (4700, 5600, 7600, etc.). You will need to provide the tractor's serial number to an AGCO/Massey Ferguson dealer to obtain the exact part number for your specific machine.

  • B-Pillar Button Panel

    If the LIN BUS communication failure originates at the panel rather than the module.

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