Massey Ferguson 08.02.31 – HITCH: Issue With Signal From Rear Hitch Right Draft Pin (HITCH)

The voltage signal coming from the right draft pin sensor (which measures the draft force/load on the rear linkage) is outside of its normal operating range, or the circuit has failed high/shorted. When this occurs, the system may default to using the left draft pin to operate in draft mode, or it may disable certain electronic draft control (EDC) functions.

• 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

1. 1

   Inspect the wiring harness and connectors leading to the right rear draft pin for pinched wires, chafing, or damaged insulation.

2. 2

   Disconnect the right draft pin sensor and check the pins for corrosion, moisture, or poor terminal tension.

3. 3

   Test the sensor's output voltage with a multimeter. The voltage must be within the manufacturer's specified range for a 'no load' condition. A constant 0V or 12V/14V indicates a short or open circuit.

4. 4

   Test the wiring harness between the draft pin sensor connector and the HITCH controller for continuity and shorts to ground.

1. 1

   Secure the Tractor

   Park the tractor on a level surface, lower any attached implements to the ground to remove load from the draft pins, and turn off the ignition.

2. 2

   Repair Wiring (If Applicable)

   If the diagnostic checks revealed broken wires or corroded connectors, repair the harness or replace the connector pigtail. Clear the code and retest.

3. 3

   Replace the Sensor

   If the wiring is intact but the sensor failed the voltage test, remove the retaining hardware holding the right draft pin in the lower linkage arm.

4. 4

   Install New Pin

   Slide the faulty draft pin out and install the new draft pin sensor. Secure it with the retaining hardware and plug in the electrical connector.

5. 5

   Calibrate the Hitch

   After replacing a draft pin sensor, you must perform the Hitch Controller Calibration procedure using the tractor's armrest console or a compatible diagnostic tool so the module can learn the new sensor's 'no load' baseline voltage.