New Holland NH 4001 – Armrest Module (ARU) or Remote Valve Module (DV Module): Signal of Aux-stick (AUX1) out of range low.

The electronic control system has detected that the signal voltage coming from the paddle or joystick potentiometer controlling auxiliary remote valve #1 (AUX1) has dropped below the minimum acceptable threshold. This typically indicates an open circuit, a short to ground, or a complete failure of the potentiometer inside the control paddle/joystick.

• T6
• T7
• T8
• T9
• TG
• TM
• TS-A
• CVX

1. 1

   Remove the armrest cover and inspect the wiring harness connecting the AUX1 paddle/joystick to the Armrest Module for pinched wires, chafing, or disconnected plugs.

2. 2

   Disconnect the AUX1 switch connector and check for bent, corroded, or pushed-out pins.

3. 3

   Using a multimeter, verify the 5V reference supply and ground at the switch connector. Test the signal wire while moving the paddle; if the voltage remains stuck near 0V despite good power and ground, the internal potentiometer is dead.

4. 4

   Attempt to recalibrate the remote valves through the IntelliView monitor. If the controller cannot read the paddle's sweep, the calibration will fail, confirming a hard fault in the switch.

1. 1

   Power Down

   Turn off the tractor and disconnect the battery to prevent electrical spikes.

2. 2

   Access the Controls

   Remove the retaining screws on the SideWinder armrest console to lift the upper trim panel, exposing the remote valve switch modules.

3. 3

   Disconnect the Switch

   Locate the specific paddle for AUX1 (usually the first in the sequence, color-coded green or black depending on the generation) or the multifunction joystick. Unplug its electrical connector.

4. 4

   Remove the Faulty Component

   Remove the mounting screws securing the AUX1 paddle or joystick assembly to the armrest bracket.

5. 5

   Install the New Part

   Seat the replacement paddle/joystick, secure it with the mounting screws, and plug in the electrical connector.

6. 6

   Reassembly

   Reinstall the armrest trim panel and reconnect the battery.

7. 7

   Calibration

   Turn the key on and use the IntelliView display (or dealer diagnostic tool) to perform an EHR (Electro-Hydraulic Remote) calibration so the Armrest Module can learn the new potentiometer's neutral, maximum extend, and maximum retract voltage values.