Massey Ferguson R15 – HITCH: Mud Guard Rear Hitch Buttons Signal Voltage Issue

Incorrect signal originating from component X626, which is the Rear linkage lowering switch on the left-hand fender. The system detects that the voltage returning from this switch is outside the expected parameters, meaning the switch is either shorted, open, or sending an erratic signal.

• 7616
• 5612
• 7622
• Interim Tier 4 (2012-2015)
• 7614
• 5611
• 7615
• 5610
• 5613
• 7620
• 5609
• 7618
• 5608
• 7619
• 7626
• 7624
• 5710SL
• 5711SL
• 5712SL
• 5713SL
• 7714
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719

1. 1

   Inspect the left-hand rear fender linkage lowering switch (X626) for physical damage, cracked rubber boots, or buttons stuck in the depressed position.

2. 2

   Access the back of the switch on the mud guard and check the wiring harness and connector for water ingress, corrosion, or broken wires.

3. 3

   Disconnect the switch and use a multimeter to test for continuity, verifying if the switch opens and closes correctly when pressed.

4. 4

   With the key on, check the connector from the Linkage Controller to ensure the switch is receiving the correct reference voltage.

1. 1

   Turn off the tractor ignition and disconnect the battery to prevent short circuits.

2. 2

   Locate the rear linkage lowering switch (X626) on the left-hand rear mud guard/fender.

3. 3

   Reach behind the fender panel or remove the switch housing cover to access the wiring.

4. 4

   Unplug the electrical connector from the faulty switch.

5. 5

   Depress the retaining tabs or remove the mounting hardware to push the old switch out of the mud guard housing.

6. 6

   Clean the wiring harness connector with electrical contact cleaner to remove any dirt or moisture.

7. 7

   Snap the new OEM switch into the fender housing.

8. 8

   Reconnect the electrical harness, ensuring the weather seal clicks firmly into place.

9. 9

   Reconnect the battery, turn on the ignition, and test the rear hitch lowering function from the fender.

10. 10

    Clear the R15 fault code from the tractor's diagnostic menu.