Massey Ferguson E 9131 (11) – Engine ECU (Sisu EEM3 / Bosch EDC7UC31): Solenoid valve 1, current level error (bank off)

The Engine Electronic Management (EEM3) system has detected an abnormal current level, likely a temporary peak, at the injector solenoid valve for cylinder 1. This indicates that the valve is not operating as expected in the bank off condition. As a protective measure, the controller logs the fault, activates a warning light, and may shut off the entire injector bank (which can include cylinders 1, 5, and 3 on a 6-cylinder engine). This results in a significant reduction of engine power and limits engine speed to approximately 1500 rpm.

• 8650
• 8660
• 8670
• 8680
• 8690
• 5400 Series
• 6400 Series
• 7400 Series
• 8400 Series
• 5270C
• 6300C
• 8370P
• 8300
• 8350
• 9470X
• MF 9795
• MF 9895
• Fortia
• Centora
• Delta

1. 1

   Inspect the wiring harness and the electrical connector at injector 1 (cylinder 1) for chafing, bare wires, or moisture that could cause a short circuit or a temporary current peak.

2. 2

   Perform a 'Run-up test' using the Sisu EEM3 service tool to verify if the injector solenoid has failed internally.

3. 3

   If the wiring harness tests perfectly and replacing the injector does not clear the fault, test the EEM3 ECU by substituting a known-good replacement ECU.

1. 1

   Safety First

   Turn the tractor's main battery switch to the OFF position or disconnect the battery connectors.

2. 2

   Depressurize

   Do not open high-pressure pipe connectors on the fuel system when the engine is running. Wait for the system pressure to drop completely.

3. 3

   Disconnect

   Unplug the electrical connector from the cylinder 1 fuel injector.

4. 4

   Remove Lines

   Loosen and remove the high-pressure fuel line connected to the injector.

5. 5

   Remove Injector

   Remove the injector hold-down clamp/bolt and carefully extract the injector from the cylinder head.

6. 6

   Install New Injector

   Clean the injector bore. Install the new injector using a new sealing washer/O-ring.

7. 7

   Reassembly

   Reinstall the hold-down clamp and torque to the manufacturer's specification. Reconnect the high-pressure fuel line and the electrical connector. (Note: The connector tube may also need to be replaced depending on wear).

8. 8

   Clear Codes

   Reconnect the battery, turn on the ignition, and use the EEM3 service tool to clear the fault codes and verify the repair.