New Holland ENG 3416 – ENGINE ECU: Glow Plugs: Array of DFCs for Short Circuit in Cylinder 3 Glow Plug

This code indicates that the engine control system has detected a short circuit in the electrical circuit specifically for the glow plug located in cylinder number 3.

• L220
• L223
• L225
• C227
• SR175
• L320
• W50C
• W60C
• W70C
• W80C

1. 1

   Verify the Code: Connect the Electronic Service Tool to the diagnostic connector to confirm ENG 3416 is currently active.

2. 2

   Prep for Testing: Turn the ignition switch to the OFF position.

3. 3

   Isolate the Component: Disconnect the wire harness connector from the cylinder 3 glow plug.

4. 4

   Measure Resistance: Using a multimeter, measure the resistance between the glow plug terminal and the chassis ground. (Note: Ensure the chassis ground connection is clean and free of paint, oil, or dirt).

5. 5

   If resistance is less than 0.75 Ω: The glow plug itself is shorted internally. Proceed to replace the glow plug.

6. 6

   If resistance is approximately 1 Ω: The glow plug is functioning normally. The short circuit is located in the wiring harness leading to the glow plug. Inspect the harness for chafing or melted insulation.

7. 7

   If resistance is greater than 20,000 Ω: There is an open circuit in the glow plug (though this usually triggers a different code, it warrants replacement).

1. 1

   Disconnect Power

   Disconnect the negative (–) battery cable from the battery to prevent accidental shorts.

2. 2

   Access the Glow Plugs

   Locate the glow plugs on the engine cylinder head, typically positioned near the fuel injectors.

3. 3

   Remove Wiring

   Remove the retaining nut securing the electrical wire to the cylinder 3 glow plug and pull the wire aside.

4. 4

   Remove the Glow Plug

   Carefully unscrew and extract the faulty glow plug from the cylinder head.

5. 5

   Install New Part

   Thread the new glow plug into the cylinder head and tighten it to the manufacturer's specified torque.

6. 6

   Reassemble

   Reattach the wire harness to the glow plug and secure it with the nut.

7. 7

   Restore Power & Test

   Reconnect the negative battery cable. Start and operate the machine, then use the Electronic Service Tool to confirm the fault code has been successfully eliminated.