Massey Ferguson 08.X.28 – HITCH: Issue With Signal From Hitch Draft Control Dial (HITCH)

The tractor's onboard diagnostic system has detected that the signal voltage coming from the Hitch Draft Control Dial (a potentiometer/switch used by the operator to adjust the draft control sensitivity of the rear 3-point linkage) is outside of its expected operating range. This typically indicates an open circuit, a short to ground, or an internal failure of the dial's potentiometer.

• 4710
• 7724S
• 5712SL
• 7722S
• 7722
• 5713SL
• 7720S
• 7716
• 7718
• T4
• 7715
• 5710SL
• 7726
• 4708
• 7726S
• 4707
• 4709
• 5711SL
• 7718S
• 7719
• 7714
• 7716S
• T4 (2015-2021)
• 7720
• Tier 4 (2015-2021)
• 7715S
• 7724
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 5710 SL
• 5711 SL
• 5712 SL
• 5713 SL
• 6612
• 6613
• 6614
• 6615
• 6616
• 6711 R
• 6712 R/S
• 6713 R/S
• 6714 S
• 6715 S
• 6716 S
• 6718 S
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626
• 7714 S
• 7715 S
• 7716 S
• 7718 S
• 7719 S
• 7720 S
• 7722 S
• 7724 S
• 7726 S

1. 1

   Inspect the wiring harness and the connector at the back of the Draft Control Switch (located on the right-hand console/armrest) for loose pins, corrosion, or physical damage.

2. 2

   Use a multimeter to check for continuity, open circuits, or shorts to ground in the wiring between the Draft Control Dial and the HITCH controller.

3. 3

   Back-probe the switch connector and measure the resistance or voltage output while turning the dial to perform a potentiometer sweep test. The signal should sweep smoothly without dropping out or spiking. If the signal is erratic or stuck, the switch is faulty.

1. 1

   Disconnect Power

   Turn off the tractor and disconnect the negative battery terminal to prevent electrical shorts.

2. 2

   Access the Switch

   Remove the retaining screws or pry the trim panel on the right-hand operator console/armrest to access the underside of the hitch control panel.

3. 3

   Remove the Faulty Dial

   Disconnect the electrical harness connector from the Draft Control Switch. Unclip or unscrew the switch from the console housing.

4. 4

   Install the New Part

   Snap the new Draft Control Switch into the console and reconnect the electrical harness.

5. 5

   Reassembly

   Reinstall the console trim panel and reconnect the battery.

6. 6

   Clear Codes & Calibrate

   Connect a compatible Massey Ferguson diagnostic tool to clear the 08.X.28 DTC. Depending on the model, you may also need to perform a Rear Hitch Module Calibration (which can sometimes trigger a related R37 code if not calibrated).