Massey Ferguson 08.02.A1 – Rear Hitch Module: Rear Hitch Module Internal Issue (HITCH)

The tractor's onboard diagnostic system has detected an internal hardware failure, a software glitch, or a loss of calibration memory within the electronic module responsible for controlling the rear 3-point linkage.

• 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

1. 1

   Check Battery and Supply Voltage: Verify the tractor's battery is fully charged (approx. 12.6V).

2. 2

   Inspect Wiring and Connectors: Check the wiring harness plugging into the EHR module for corroded pins, moisture ingress, or loose connections.

3. 3

   Verify Alternator/Ignition Signals: Verify a stable 12V ignition supply and a clean alternator (engine-running) signal are present at the module connector.

4. 4

   Check Sensor Continuity: Ensure the lift position sensors and draft pins are securely connected.

1. 1

   Disconnect Power

   Disconnect the tractor's battery to prevent electrical arcing.

2. 2

   Locate the Module

   Access the Rear Hitch (EHR) Module, which is typically located inside the cab console (often behind the right-hand control panel or under the side trim, depending on the specific series).

3. 3

   Remove the Faulty Module

   Carefully unplug the multi-pin wiring harness connectors from the module. Unbolt the retaining screws/brackets and remove the unit.

4. 4

   Install the Replacement

   Mount the new or repaired EHR module and secure it with the original hardware. Reconnect the wiring harness securely.

5. 5

   Restore Power

   Reconnect the tractor's battery.

6. 6

   Calibration

   Use a compatible Massey Ferguson diagnostic tool to perform the rear hitch calibration procedure to the tractor's specific lift cylinders, position sensors, and draft pins.

7. 7

   Clear Codes

   Clear the 08.02.A1 fault code from the system and test the raise/lower functions of the rear linkage.