New Holland 18058 – ACM: Joystick 2 Y-Axis Voltage Too High

The Armrest Control Module (ACM) has detected that the voltage from the Y-axis (forward and backward movement) of Control Lever 2 exceeds the manufacturer's specified maximum threshold. This indicates an electrical fault in the circuit between the control lever and the module. This condition may cause the associated hydraulic function to become inoperable or behave erratically.

• T6.140
• T6.150
• T6.160
• T6.175
• T7.210
• T7.220
• T7.235
• T7.250
• T7.260
• T7.270
• T8.320
• T8.350
• T8.380
• T8.410
• T8.435
• T9.435
• T9.480
• T9.530
• T9.565
• T9.600

1. 1

   Check for incorrect configuration of the Armrest Control Module (ACM), especially if the machine is not equipped with a second joystick (CCM/APH)

2. 2

   Inspect the wiring harness and connectors leading to the armrest and joystick for damage, chafing, or corrosion

3. 3

   Gently pull on each wire in the harness plug near the armrest; a stretchy wire indicates an internal break

4. 4

   Verify the system power supply voltage is within correct specifications

5. 5

   Check for other active fault codes, such as communication errors or reference voltage faults (e.g., 18061, 18062), which could indicate a wider electrical problem

1. 1

   Address wiring issues

   If any damaged wires, internal breaks, or faulty connectors are found during inspection, repair or replace them as necessary. Ensure all connections are clean and secure.

2. 2

   Calibrate joystick

   Access the tractor's H-menu service menu (if available) and perform a joystick or armrest calibration routine to see if it resolves the issue.

3. 3

   Replace joystick assembly

   If wiring and configuration are confirmed correct and the fault persists, replace the joystick assembly, as the internal potentiometer is likely faulty.

4. 4

   Replace Armrest Control Module (ACM)

   If replacing the joystick does not resolve the fault, the issue may lie within the Armrest Control Module itself. Replace the ACM.