Massey Ferguson 08.X.A1 – Rear Hitch Module: Rear Hitch Module Internal Issue (HITCH)

A controller checksum error has occurred within the module, meaning the module's internal software or hardware has detected a memory, processing, or internal circuitry failure.

• 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
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626

1. 1

   Verify the supply voltage and ground connections to the Rear Hitch Module, as low voltage or voltage spikes can cause internal processing errors

2. 2

   Check if the linkage has lost its calibration

3. 3

   Attempt to clear the DTC using a compatible diagnostic tool; if the code immediately returns upon cycling the key, the module has suffered a hard internal failure

1. 1

   Disconnect Power

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

2. 2

   Locate the Module

   Access the Rear Hitch Module (location varies by cab configuration, often located under the right-hand console or behind the seat).

3. 3

   Inspect Wiring

   Disconnect the harness from the module and inspect the pins for corrosion, moisture, or pushed-out terminals.

4. 4

   Replace the Module

   If the wiring is intact and the 08.X.A1 checksum error persists, remove the mounting hardware and replace the Rear Hitch Module with a new unit.

5. 5

   Reprogram / Calibrate

   A new Hitch Module is a 'Flash module' and must be programmed/configured to the tractor's specific CAN-bus network using the Massey Ferguson diagnostic software (e.g., Wintest/EDT).

6. 6

   Linkage Calibration

   Once installed, you must perform a full rear linkage calibration procedure so the new module learns the upper and lower limits of the hitch position sensors.