Deutz-Fahr 1109 – EMR3: Shut-off Request Ignored by Operator

The engine's electronic control unit (ECU) has issued a command to shut down the engine, but the command was not executed and the engine continued to run. This indicates a failure in the system responsible for physically stopping the fuel supply to the engine. The fault triggers a permanently illuminated warning light on the dashboard.

• Agrotron

1. 1

   Verify that fault code 1109 is active using a diagnostic tool

2. 2

   Listen for the fuel shut-off solenoid to 'click' by having an assistant cycle the ignition key from ON to OFF (without starting the engine)

3. 3

   Visually inspect the wiring harness and connectors leading to the fuel shut-off solenoid for damage, corrosion, loose connections, or burnt wires

4. 4

   Disconnect the electrical connector from the fuel shut-off solenoid and use a multimeter to check for voltage when the ignition is turned on

1. 1

   Disconnect battery

   Disconnect the negative terminal of the battery before beginning any repair work for safety.

2. 2

   Remove fuel shut-off solenoid

   Locate the solenoid on the side of the engine block, connected to the fuel injection pump, and remove it.

3. 3

   Test the solenoid

   Apply a 12V power source to the removed solenoid; the plunger should retract with power and extend without. Measure internal resistance with a multimeter (infinite indicates an open circuit, near zero indicates a short). Replace if it fails either test.

4. 4

   Install new solenoid

   If the old solenoid is faulty, install the replacement. Ensure it is securely mounted and the electrical connector is firmly attached.

5. 5

   Clear fault codes

   Reconnect the battery and use a diagnostic tool to clear fault code 1109 from the EMR3 memory.

6. 6

   Verify repair

   Start the engine, let it run briefly, then turn the ignition off to confirm proper shutdown. Re-check for active fault codes.