Massey Ferguson 08.02.27 – HITCH: Issue With Signal From Hitch Maximum Height Dial (HITCH)

The tractor's onboard diagnostic system has detected an irregular, missing, or out-of-range voltage signal from the potentiometer (dial) that controls the maximum height limit of the rear 3-point hitch. This prevents the electronic hitch control (EHR) system from accurately determining the operator's desired maximum lift height.

• 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

1. 1

   Inspect the maximum height dial on the right-hand control armrest/side console for physical damage, heavy dirt ingress, or liquid spills.

2. 2

   Disconnect the dial's electrical connector. Check the pins for corrosion, bent terminals, or loose wires.

3. 3

   Using a multimeter, test the wiring harness between the dial connector and the HITCH module for continuity, shorts to ground, or shorts to power.

4. 4

   Test the dial (potentiometer) itself with a multimeter set to ohms. Slowly turn the dial from minimum to maximum. The resistance should change smoothly without any dead spots, drops to zero, or jumps to infinity (open circuit). If the reading is erratic or open, the potentiometer has failed internally.

1. 1

   Safety First

   Park the tractor on a level surface, lower any attached implements to the ground, turn off the engine, and disconnect the negative battery terminal.

2. 2

   Access the Console

   Carefully pry up or unscrew the trim panel on the right-hand control armrest or side console where the hitch dials are located.

3. 3

   Remove the Faulty Dial

   Disconnect the wiring harness from the back of the Hitch Maximum Height Dial. Remove the retaining nut or mounting screws holding the potentiometer to the console panel.

4. 4

   Install the New Part

   Insert the new potentiometer into the console, ensuring the alignment tab (if equipped) sits in the correct slot. Secure it with the retaining nut/screws.

5. 5

   Reassemble

   Reconnect the electrical harness to the new dial. Snap or screw the console trim panel back into place.

6. 6

   Test

   Reconnect the battery. Turn the ignition on and use a compatible diagnostic tool to clear the 08.02.27 fault code. Start the tractor and test the rear hitch, adjusting the maximum height dial to confirm the implement stops at the newly commanded heights.