TMF 43

New Holland TMF 43 – TMF (Tractor Multifunction Controller): No Draft pin(s) detected but the Armrest controller specified tractor with draft control.

Issue description

This code indicates a hardware-to-software configuration mismatch. The tractor's Armrest controller is programmed to expect an electronic draft control system (which utilizes load-sensing draft pins on the 3-point hitch). However, the controller cannot detect the physical draft pins. This usually means the tractor does not actually have draft control equipped, the configuration is wrong, or the draft pins/wiring have completely failed or disconnected.

Applies to these machines

  • T8010
  • T8020
  • T8030
  • T8040
  • T8050
  • T8.350
  • TG210
  • TG215
  • TG230
  • TG245
  • TG255
  • TG275
  • TG285
  • TG305
  • TM175
  • TM190
  • T6030

Check the cause

  1. Verify Tractor Equipment: Physically inspect the 3-point hitch to determine if the tractor is actually equipped with electronic draft control (look for the wired load-sensing draft pins at the lower link arms).

  2. Check Controller Configuration: If the tractor does not have draft control, the Armrest controller is incorrectly configured.

  3. Inspect Wiring and Connectors: If the tractor does have draft control, inspect the wiring harnesses leading to the draft pins. Look for severed wires, unplugged connectors, or heavy corrosion that would cause an open circuit.

  4. Check for Related Codes: Look for codes like TMF 22 (Single draft pin sensor failed) or TMF 23 (Two draft pin sensors failed), which can help isolate a specific failed pin.

Repair steps

  1. Address Configuration Issues (If no draft pins exist)

    Access the Armrest controller's configuration/calibration menu using the tractor's display or a diagnostic tool. Change the tractor configuration setting to specify 'tractor without draft control.'

  2. Repair Wiring (If draft pins exist)

    Disconnect the harness at the draft pins. Use a multimeter to check for continuity and proper reference voltage from the TMF. Repair any broken wires or clean corroded terminals.

  3. Replace Faulty Sensors

    If the wiring is intact but the TMF still cannot detect the pins, the internal sensors of the draft pins have failed (often failing 'low/open'). Remove the lower link arms, extract the faulty draft pins, and install new OEM draft sensor pins.

  4. Alternative Bypass

    If the draft control feature is no longer needed by the operator and they wish to avoid the high cost of replacement pins, install an aftermarket 'Draft Load Sensing Pin Elimination Kit' to bypass the circuit and satisfy the controller.

  5. Recalibrate

    After replacing the pins or changing the configuration, clear the fault codes. You will likely need to perform a full Hitch Calibration procedure (often prompted by code TMF 61).

Parts you might need

(9)
  • Draft Sensor Pin (Load Sensing Pin)

    87351611

    Fitment varies heavily by exact model and hitch category.

  • Draft Sensor Pin (Load Sensing Pin)

    322022A1

    Fitment varies heavily by exact model and hitch category.

  • Draft Sensor Pin (Load Sensing Pin)

    87661279

    Fitment varies heavily by exact model and hitch category.

  • Draft Sensor Pin (Load Sensing Pin)

    48194532

    Fitment varies heavily by exact model and hitch category.

  • Tractor Multifunction Controller (TMF / ECU)

    87617964

    Only replace if the controller itself has internally failed and cannot read a known-good circuit. Remanufactured modules are available.

  • Tractor Multifunction Controller (TMF / ECU)

    51563039

    Only replace if the controller itself has internally failed and cannot read a known-good circuit. Remanufactured modules are available.

  • Tractor Multifunction Controller (TMF / ECU)

    87524908C

    Only replace if the controller itself has internally failed and cannot read a known-good circuit. Remanufactured modules are available.

  • Draft Load Sensing Pin Elimination Kit (Aftermarket)

    47137583

    Used to bypass the draft control system entirely without throwing error codes.

  • Draft Load Sensing Pin Elimination Kit (Aftermarket)

    87661289

    Used to bypass the draft control system entirely without throwing error codes.

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