New Holland 4110 – Armrest Controller (ARU), Hydraulic Controller, or Vehicle Control Unit: Rear Remote No.1 Driver Faulty

This fault code signifies an electrical problem within the control circuit for the first rear remote valve. The driver component within the control module has detected an issue such as an open circuit, a short circuit to ground, or a short circuit to power in the wiring or the solenoid coil itself. This prevents the proper electrical signal from reaching the solenoid, resulting in the inability to operate the implement connected to the #1 rear remote.

• T6010
• T6020
• T6030
• T6040
• T6050
• T6070
• T7.185
• T7.220
• T7.235
• T7.250
• T7.260
• T7.270
• T7030
• T7040
• T7050
• T7060
• T7070
• TG Series

1. 1

   Visually inspect the wiring harness leading to the #1 rear remote valve solenoid (typically the first in the valve stack) for chafing, cuts, pinched wires, or corrosion.

2. 2

   Check the electrical connector at the solenoid to ensure it is clean and securely fastened. Disconnect and reconnect it to verify a good connection.

3. 3

   Verify basic electrical health: ensure the battery is fully charged (above 12.5V) and that all main power and ground connections are clean and tight.

4. 4

   Perform a solenoid electrical test: Disconnect the harness and measure resistance across the solenoid coil pins. Expected reading is typically 5-15 Ohms. An 'OL' (infinite) reading indicates an open circuit, while a near-zero reading indicates a short circuit.

5. 5

   Perform a wiring harness test: With the key off and solenoid disconnected, check for continuity to ground on both harness wires (should be none). Then check for continuity between the two wires (should be none).

1. 1

   Prepare machine for service

   Park the tractor on a level surface, shut down the engine, and remove the key. Relieve any residual hydraulic pressure by moving the remote levers back and forth.

2. 2

   Locate components

   Identify the rear remote valve stack at the rear of the tractor. Locate the #1 remote valve (typically the first in the stack) and its corresponding electrical solenoid.

3. 3

   Perform Diagnostics

   Complete the diagnostic checks listed in the section above.

4. 4

   Replace the solenoid

   If diagnostic tests confirm the solenoid coil is faulty (open or shorted), unscrew the retaining nut holding the coil onto the valve stem. Slide the old coil off, install the new coil in the correct orientation, and tighten the retaining nut securely without overtightening. Reconnect the electrical connector.

5. 5

   Repair wiring harness

   If diagnostic tests indicate a short or open circuit in the wiring harness rather than the solenoid, repair or replace the damaged section of the harness.

6. 6

   Clear fault codes

   Start the tractor. If the fault code does not clear automatically, clear it using the tractor's diagnostic menu or the New Holland Electronic Service Tool (EST).

7. 7

   Test operation

   Operate the #1 rear remote lever in the cab to confirm that the hydraulic function has been fully restored.