New Holland ARMRE 12081 – ARM (Armrest Controller / Arm Rest Module): Loss of/unavailable Performance Monitor Display - RECORD/PLAY functionality disabled

The controller has lost CAN bus communication with the Performance Monitor Display, disabling the ability to record or play back automated headland turn sequences.

• TG210
• TG230
• TG255
• TG285
• T8010
• T8020
• T8030
• T8040
• T8050
• MX210
• MX230
• MX255
• MX285
• 215
• 245
• 275
• 305
• 335

1. 1

   Check the CAN bus communication data link between the Armrest Controller and the Performance Monitor Display (often located on the A-pillar).

2. 2

   Inspect CAN bus terminators for broken solder joints where the pins from the plug solder to the board (especially on older TG series tractors).

3. 3

   Check wiring harnesses and connectors between the Armrest Controller, cab harness, and Performance Monitor for loose pins, corrosion, or chafed wires.

4. 4

   Verify the Armrest Controller software is up to date and properly calibrated to recognize the Performance Monitor.

1. 1

   Power Down

   Turn off the tractor and disconnect the battery to prevent electrical spikes.

2. 2

   Inspect and Repair Wiring

   Access the Armrest Controller and the Performance Monitor Display. Disconnect the harnesses and inspect the pins. Clean with contact cleaner and reconnect securely.

3. 3

   Replace Faulty Terminators (If Applicable)

   If diagnosing an older TG tractor with active CAN terminators, check them for broken solder joints. Replace with the superseded simpler, cheaper plug containing two resistors to terminate the CAN bus if faulty.

4. 4

   Recalibrate

   Reconnect the battery. Use the Electronic Service Tool (EST) laptop to clear the fault codes. Recalibrate the Armrest Controller and verify that the Performance Monitor Display is communicating.

5. 5

   Component Replacement

   If communication cannot be restored and wiring/terminators test good, the fault lies internally. Send out the Performance Monitor Display or Armrest Controller for membrane/LCD repair, or replace them entirely.