Massey Ferguson 520293.31 – Engine Control Unit (ECU) - AGCO SISU POWER EEM4 / EEM4F: Field test software expired

The engine controller is currently running a beta or field-test version of the software that has a built-in expiration timer. Once the timer expires, the ECU triggers this active fault, illuminates the warning lamp, and forces the engine into a derated state (power limitation) to prevent further operation on expired test parameters.

• 4710
• 7724S
• 5712SL
• Interim Tier 4 (2012-2015)
• 7722
• 7722S
• 7615
• 5613
• 5713SL
• 7720S
• 7716
• 7718
• T4
• 7715
• 5710SL
• 7726
• 7616
• 7618
• 5608
• 4708
• 7619
• 7626
• 7726S
• 7624
• 4707
• 4709
• 5711SL
• 7614
• 7718S
• 5610
• 7620
• 7719
• 7714
• 7716S
• T4 (2015-2021)
• 5612
• 7622
• 7720
• Tier 4 (2015-2021)
• 5611
• 7715S
• 5609
• 7724
• MF 7700 series
• Dyna 4 models

1. 1

   Connect an AGCO-compatible diagnostic scanner (such as the AGCO Electronic Diagnostic Tool - EDT or Jaltest AGV) to the tractor's diagnostic port.

2. 2

   Read the active fault codes in the Engine Control Module to confirm SPN 520293 FMI 31 is the active code causing the engine derate.

3. 3

   Check the current ECU software version to verify that it is indeed a field test/beta version rather than standard production software.

1. 1

   Connect diagnostic tool

   Connect the AGCO Electronic Diagnostic Tool (EDT) to the machine.

2. 2

   Establish communication

   Establish communication with the Engine Control Module (EEM4).

3. 3

   Flash production software

   Download and flash the latest official production software (firmware) into the Engine ECU to overwrite and replace the expired field test software.

4. 4

   Clear fault codes

   Clear the stored fault codes from the ECU memory.

5. 5

   Verify repair

   Cycle the ignition key and verify that fault code 520293.31 does not return and that the engine derate has been lifted.