New Holland ENG 3210 – ENGINE: TWV1 Output Open Load Injector Coil Open

The Engine Control Unit has detected an open circuit or a short circuit in the electrical circuit for the Bank 1 fuel injector(s). The ECU cannot communicate with or actuate the injector coil for Cylinder 1 (or Cylinder 3) because the circuit is broken, unplugged, or the internal coil of the injector has failed.

• L218
• L220
• SR175
• SV300
• SV340
• TR340
• TV380
• B90B
• B100B
• T5.100
• T5.110
• T5.120

1. 1

   Visually inspect the wiring harness leading from the Engine ECU to the Bank 1 fuel injectors for chafed wires, melted insulation, or disconnected plugs.

2. 2

   Disconnect the harness at the injector and the ECU to check for pushed-back pins, corrosion, or moisture inside the connectors.

3. 3

   Perform a coil resistance test using a multimeter across the pins of the affected injector. Infinite resistance indicates a broken internal coil. Compare readings to a known good injector on the engine.

4. 4

   Perform a harness continuity test between the injector connector and the corresponding pin on the ECU harness to rule out wiring failure.

1. 1

   Preparation

   Disconnect the machine's battery to prevent electrical shorts and ensure the engine is cool. Clean the area around the injectors thoroughly to prevent debris from entering the engine.

2. 2

   Access

   Remove the engine covers and any components obstructing access to the fuel rail and injectors.

3. 3

   Disconnection

   Unplug the electrical connector from the faulty TWV injector.

4. 4

   Fuel Lines

   Carefully loosen and remove the high-pressure fuel line connecting the common rail to the injector. Cap the rail and line to prevent contamination.

5. 5

   Removal

   Unscrew the injector support fastening screws. Disassemble the injector hold-down supports/clamps and carefully pull the injector out of the cylinder head.

6. 6

   Preparation for Install

   Clean the injector bore in the cylinder head. Install new O-rings and the copper sealing washer on the new injector.

7. 7

   Installation

   Insert the new injector into the bore. Ensure that the fuel return holes are facing the correct direction as per the other injectors.

8. 8

   Reassembly

   Reinstall the injector supports and torque the fastening screws to OEM specifications. Reconnect the high-pressure fuel line and the electrical connector.

9. 9

   Finalization

   Reconnect the battery. Bleed the fuel system if required by your specific engine manual. Use a diagnostic scan tool to clear the ENG 3210 fault code and run the engine to check for leaks and proper operation.