Massey Ferguson 1B.03.09 – Linkage/PTO/Light Module On The B-Pillar: Issue With Signal From Hitch Drop Rate Control Dial

The electronic control unit is receiving an erratic, out-of-range, or missing electrical signal from the dial (potentiometer/encoder) used by the operator to adjust the lowering speed (drop rate) of the rear 3-point hitch.

• 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

   Check the physical condition of the hitch drop rate control dial on the side console/B-pillar. Ensure it turns smoothly and is not physically broken or stuck.

2. 2

   Inspect the wiring harness and connectors between the drop rate control dial and the Linkage/PTO/Light Module on the B-Pillar. Look for chafed wires, corrosion, or loose pins that could interrupt the signal.

3. 3

   Use a multimeter to test the dial's potentiometer/encoder output. You should observe a smooth resistance or voltage sweep as the dial is turned. If the signal drops out or shows an open circuit, the dial has failed internally.

1. 1

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

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

2. 2

   Remove the interior trim panels on the B-Pillar or the right-hand side console to access the underside of the electronic hitch control panel (the "mouse" or dial cluster).

   Remove the interior trim panels on the B-Pillar or the right-hand side console to access the underside of the electronic hitch control panel (the "mouse" or dial cluster).

3. 3

   Disconnect the electrical harness connector from the Hitch Drop Rate Control Dial.

   Disconnect the electrical harness connector from the Hitch Drop Rate Control Dial.

4. 4

   Inspect the connector for damaged pins. If the wiring is damaged, repair the harness.

   Inspect the connector for damaged pins. If the wiring is damaged, repair the harness.

5. 5

   If the wiring is intact but the dial failed the diagnostic sweep test, remove the retaining nut or clips securing the dial to the console and pull the faulty dial out.

   If the wiring is intact but the dial failed the diagnostic sweep test, remove the retaining nut or clips securing the dial to the console and pull the faulty dial out.

6. 6

   Install the new Hitch Drop Rate Control Dial and reconnect the electrical harness.

   Install the new Hitch Drop Rate Control Dial and reconnect the electrical harness.

7. 7

   Reinstall the console trim panels.

   Reinstall the console trim panels.

8. 8

   Reconnect the battery, clear the fault codes using a diagnostic tool, and test the 3-point hitch to confirm the drop rate adjusts correctly without throwing a code.

   Reconnect the battery, clear the fault codes using a diagnostic tool, and test the 3-point hitch to confirm the drop rate adjusts correctly without throwing a code.