New Holland ARMRE 18060 – Armrest Control Module (ACM): Joystick 2 proportional rocker switch - voltage too high

The control module is receiving a voltage signal from the proportional rocker switch on Joystick 2 that exceeds the maximum expected threshold. This typically indicates a short circuit to power, an open ground circuit, an internal failure of the switch's potentiometer, or a software configuration mismatch.

• New Holland T7 Series
• New Holland T7.220
• New Holland T7.235
• New Holland T7.250
• New Holland T7.260
• New Holland T7.270
• New Holland T8 Series
• New Holland T9 Series

1. 1

   Verify ACM configuration using the Electronic Service Tool (EST) or in-cab display to ensure it matches the installed hardware (incorrect configuration is a common cause)

2. 2

   Access switch diagnostics via the field computer or display to monitor the live input state of the Joystick 2 rocker switch

3. 3

   Check the signal wire for a short to a 12V or 5V reference power source

4. 4

   Check the switch ground circuit for high resistance or an open circuit

1. 1

   Check Software First

   Connect the diagnostic tool (EST) and navigate to the Armrest Control Module settings. Verify the hardware configuration. If the ACM is configured for a proportional rocker switch that your machine does not have, correct the configuration, save, and clear the code.

2. 2

   Isolate the Circuit

   If the configuration is correct, turn off the machine and disconnect the battery.

3. 3

   Inspect Wiring

   Open the armrest console to access the wiring harness for the Multi-Function Handle (MFH) / Joystick 2. Inspect the harness for chafing, pinched wires, or damaged connector pins. Repair any damaged wiring.

4. 4

   Test the Switch

   If the wiring is intact, test the proportional rocker switch itself. If it has failed internally (shorted), it must be replaced.

5. 5

   Replace Components

   Replace the faulty proportional rocker switch. Note that on many New Holland Multi-Function Handles, individual switches are not serviced separately, requiring the replacement of the joystick assembly.

6. 6

   Calibrate and Clear

   Reassemble the armrest, reconnect the battery, and perform a basic assurance test or calibration via the display to ensure the new switch is recognized and sweeping within the correct voltage range. Clear the fault code.