Massey Ferguson 8.01.50 – HITCH: Issue With Signal From Rear Hitch Right Draft Pin (HITCH)

The voltage signal from the right draft pin sensor falls outside the normal operating range. When this fault occurs, the system will typically degrade its operation, relying on the left pin to operate in draft mode, or it will reduce the load on the draft.

• 5710SL
• 5711SL
• 5712SL
• 5713SL
• T4
• 7714
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7722S
• 7724
• 7724S
• 7726
• 7726S

1. 1

   Inspect the wiring harness and connectors leading to the right draft pin for physical damage, corrosion, or loose connections.

2. 2

   Test the wire harness for continuity, open circuits, or shorts to ground (Pin A: Ground, Pin B: Signal input, Pin C: Power supply 5V/8V).

3. 3

   Perform a swap test by temporarily interchanging the left and right draft pins. If the fault shifts to the left draft pin (e.g., 8.01.32 / 8.01.51), the sensor is faulty. If the fault remains on the right side, the issue is in the wiring harness or the HITCH controller.

1. 1

   Turn the tractor's keyswitch to the "OFF" position.

   Turn the tractor's keyswitch to the "OFF" position.

2. 2

   Disconnect the wiring harness connector from the right draft pin sensor.

   Disconnect the wiring harness connector from the right draft pin sensor.

3. 3

   If harness damage was found during diagnostics, repair the damaged wires or replace the connector/harness segment.

   If harness damage was found during diagnostics, repair the damaged wires or replace the connector/harness segment.

4. 4

   If the wiring is intact, support the lower link arm to relieve pressure on the draft pin.

   If the wiring is intact, support the lower link arm to relieve pressure on the draft pin.

5. 5

   Remove the retaining hardware securing the faulty right draft pin and slide the pin out of the linkage assembly.

   Remove the retaining hardware securing the faulty right draft pin and slide the pin out of the linkage assembly.

6. 6

   Install the new draft pin sensor and secure it with the retaining hardware.

   Install the new draft pin sensor and secure it with the retaining hardware.

7. 7

   Reconnect the wiring harness connector to the new sensor.

   Reconnect the wiring harness connector to the new sensor.

8. 8

   Turn the keyswitch "ON" and verify that the fault code has cleared.

   Turn the keyswitch "ON" and verify that the fault code has cleared.

9. 9

   Perform a rear hitch potentiometer/draft calibration procedure via the tractor's terminal/dashboard to ensure the new sensor is properly zeroed to the HITCH module.

   Perform a rear hitch potentiometer/draft calibration procedure via the tractor's terminal/dashboard to ensure the new sensor is properly zeroed to the HITCH module.