Massey Ferguson E9235 – Engine Electronic Module (EEM / ECU): Diagnostic ID module memory fault / ID module, supply voltage HIGH (> 32.0 V)

The ID module stores engine-specific data and monitors the main engine control unit's software. When this module suffers a memory defect, overflows its data bank, or experiences a severe voltage spike, it triggers E9235 and forces the engine into a derated (power-limited) protection mode.

• Massey Ferguson 8600 Series (8670, 8690)
• Massey Ferguson 7600 Series
• Massey Ferguson 7400 Series (7480, 7490)
• Massey Ferguson 8210

1. 1

   Test alternator output and battery voltage to ensure the charging system is not overcharging (> 32.0 V) and damaging the module

2. 2

   Inspect the wiring harness and connectors between the main Engine ECU and the X188 ID module for corrosion, moisture, or a poor ground connection

3. 3

   Check the CAN A data link between the ECU and the ID module, as a loss of communication can mimic a memory failure

4. 4

   Use an AGCO diagnostic tool to check if the ID module's memory bank is full or overflowing (clearing the memory bank may resolve the issue without hardware replacement)

1. 1

   Activate temporary bypass

   If the tractor is derated in the field and a replacement part is not immediately available, use the WinEEM3s Service Tool to activate a temporary bypass (Configurations -> Bypass restrictions) to allow the engine to run normally without the ID module for a maximum of 200 hours.

2. 2

   Disconnect battery

   Disconnect the tractor's battery.

3. 3

   Locate ID module

   Locate the ID module (X188) on the engine block, usually mounted behind the main Engine Electronic Module (EEM).

4. 4

   Remove faulty module

   Disconnect the wiring harness from the faulty ID module and unbolt it from the block.

5. 5

   Install new module

   Install the new ID module and securely attach it to the engine block. Reconnect the wiring harness.

6. 6

   Reconnect battery

   Reconnect the battery.

7. 7

   Connect diagnostic tool

   Connect the WinEEM3s Service Tool (or equivalent AGCO diagnostic software) to the machine.

8. 8

   Couple ECU and ID-module

   Navigate to the Configurations tab and select 'Couple ECU and ID-module'. This pairs the new module with the existing ECU.

9. 9

   Set engine hours

   Navigate to 'Set Engine Hours' to sync the correct running hours to the new module (Note: hours can only be added/increased, not decreased).

10. 10

    Clear fault code

    Clear the E9235 fault code and test run the tractor.