Case IH 18353 (1083.02, 1083.03, 1083.04, 2687.02, 2687.03, 2687.04, 2687.07) - ACML – ACML (Armrest Control Module): Joystick Button 3 ACML - error state

Indicates an error state specifically tied to Button 3 on the electronic joystick. The failure can be an electrical issue such as an open circuit, short to ground, short to power, or a signal out of range/calibration.

• MAXXUM T4E
• VESTRUM CVX
• Puma 165
• Puma 170
• Puma 185
• Puma 200
• Puma 215
• Puma 230
• Magnum 235-340
• Magnum 290
• Maxxum 125
• Maxxum 135
• Steiger Series
• Quadtrac Series

1. 1

   Check for Software Updates: Verify if there is a software update available for the ACM, as historical issues have been resolved via software flashes.

2. 2

   Check for Related Codes: Look for accompanying armrest codes (such as ARM 49) indicating a failure of the remote hydraulic control hardwired to the armrest controller.

3. 3

   Wiring and Connection Inspection: Inspect the harness and connectors between the joystick and the ACML for pinched wires or loose pins.

1. 1

   Software Flash

   Connect the Electronic Service Tool (EST) to the tractor's Data Bus. Select the ACM controller, browse for the updated software file (e.g., app_acml_rev...hx2), and download it to the module. Key OFF the tractor and wait at least 20 seconds for all controllers to shut down correctly before keying back on.

2. 2

   Access Armrest Control Unit

   If the software is up to date and the wiring is intact, the physical switch or the joystick assembly itself has failed. Access the armrest control unit by removing the bezel and housing screws.

3. 3

   Replace the Switch/Joystick

   Disconnect the faulty 3-button joystick assembly or the internal switch assembly and install the replacement part.

4. 4

   Calibration

   After replacing the joystick or updating the ACM software, you must perform a calibration procedure for the armrest controls to ensure the ACML recognizes the new component's parameters.