New Holland 18052 – ARU: Control Lever 1 Y-axis Increased Voltage

The Armrest Controller (ACM) has detected that the voltage signal from the Y-axis of Control Lever 1 (Joystick 1) is above the maximum expected threshold. This indicates an electrical fault, such as a short circuit to a power source or an internal failure of the joystick's potentiometer, which prevents the controller from accurately determining the operator's intended hydraulic commands.

• T7.170
• T7.185
• T7.200
• T7.210
• T7.220
• T7.235
• T7.250
• T7.260

1. 1

   Inspect the wiring harness leading to and from the joystick for chafing, pinching, or corrosion.

2. 2

   Check the connectors at the joystick base and the armrest control module for broken or loose pins.

3. 3

   Verify the tractor's overall electrical system is stable and free of voltage supply fluctuations.

4. 4

   Test the Y-axis potentiometer using a multimeter set to measure resistance (Ohms). Disconnect the joystick's electrical connector and identify the three terminals (5V, ground, and signal). Measure the resistance between the two outer terminals to ensure a steady reading matching the total rated resistance. Then, place one probe on the center (wiper) terminal and the other on an outer terminal, and slowly move the joystick along its full Y-axis (forward and backward) to verify resistance changes smoothly without sudden jumps, drops to zero, or infinite readings.

1. 1

   Disconnect power

   Disconnect the tractor's battery to prevent electrical damage before beginning any repairs.

2. 2

   Access the joystick

   Remove the covers or panels on the SideWinder II armrest to gain access to the joystick assembly and its mounting hardware.

3. 3

   Replace faulty component

   If the entire joystick is faulty, disconnect the electrical connector, unbolt the old joystick, install the new assembly, and reconnect the wiring. If performing a component-level repair on a faulty potentiometer, desolder the bad potentiometer from the internal circuit board and solder a new one with a matching resistance value.

4. 4

   Reassemble armrest

   After replacing the joystick or potentiometer, reassemble the armrest covers and panels.

5. 5

   Calibrate joystick

   Perform a calibration procedure using the tractor's onboard diagnostic 'H' menu or a dealer's Electronic Service Tool. Move the joystick through its full range of motion to set the minimum, maximum, and neutral positions.