Massey Ferguson E 9132 (31) – Engine Control Unit (ECU) / Sisu EEM3: Solenoid valve 2, fast decay error (bank off)

The fault code 9132 with FMI 31 indicates a 'fast decay error'. The engine control unit has detected that the magnetic field of the fuel injector solenoid for cylinder 2 is not collapsing within the expected timeframe during the de-energizing (shutdown) phase. This indicates a problem in the electrical circuit or the injector solenoid itself. To prevent further damage from a potential high-side short circuit, the ECU may shut down an entire bank of injectors (bank off).

• Massey Ferguson 8600 Series
• Massey Ferguson 8650
• Massey Ferguson 8660
• Massey Ferguson 8670
• Massey Ferguson 8680
• Massey Ferguson 8690

1. 1

   Cycle the ignition key off and back on, then start the engine to see if the fault remains active (indicating a hard fault)

2. 2

   Inspect the wiring harness between the Engine ECU and Injector Solenoid Valve 2 for chafing, shorts to ground, or broken cables

3. 3

   Verify ECU operation with a test or replacement EEM3 controller if the wiring and injector are not visibly damaged

1. 1

   Power Down

   Turn off the tractor and disconnect the battery to prevent electrical shorts during testing.

2. 2

   Inspect the Harness

   Locate the wiring harness connecting the Engine ECU to the fuel injectors. Carefully inspect the segment running to Injector 2. Use a multimeter to check for continuity and ensure there are no shorts to ground or breaks in the wires.

3. 3

   Repair/Replace Wiring

   If the wiring is damaged, repair the broken wires or replace the engine injector wiring harness.

4. 4

   Test/Replace the Injector

   If the wiring is intact, the issue may be a mechanically sticking or electrically failing solenoid on Injector 2. Replace the fuel injector if it fails resistance testing or is mechanically binding.

5. 5

   Replace the Engine ECU

   If the wiring harness and the injector are both in good working order, the fast decay control circuit inside the ECU has failed. You must replace the Sisu EEM3 Engine Controller.

6. 6

   Clear and Verify

   Reconnect the battery, use a diagnostic service tool to clear the stored E 9132 (31) fault code, and run the engine to verify the bank remains active and the code does not return.