Case IH 1010 – AUX (Remote) Controller: Aux remote valve EXTEND LIMIT SET switch has failed in the Armrest Controller

The system has detected an electrical fault—such as an open circuit, short to ground, or short to power—in the switch used by the operator to set the extend limit or timer for the auxiliary hydraulic remote valves. Because the signal is missing or out of the expected voltage range, the controller disables the extend limit function for safety and equipment protection.

• MX Magnum
• STX Steiger
• Case IH MX Magnum Series
• MX210
• MX230
• MX255
• MX285
• Case IH Steiger Series
• 280
• 330
• 335
• 380
• 430
• TG210
• TG230
• TG255
• TG285

1. 1

   Verify the code using the tractor's Electronic Service Tool (EST) or the instrument cluster diagnostic display to confirm AUX 1010 is active.

2. 2

   Check the physical action of the Extend Limit Set switch on the armrest to ensure it is not physically stuck, broken, or jammed by debris.

3. 3

   Access the wiring beneath the armrest console and inspect the connectors plugging into the Armrest Controller for loose, bent, or corroded pins.

4. 4

   Using a multimeter, test the switch for proper continuity when pressed and released. Check the wiring harness between the switch and the Armrest Controller board for breaks or shorts to ground.

1. 1

   Power Down

   Turn off the tractor and disconnect the negative battery cable to prevent electrical shorts during disassembly.

2. 2

   Access the Armrest

   Remove the retaining screws on the armrest console housing to lift the cover and access the internal switch modules and the Armrest Controller board.

3. 3

   Inspect and Clean

   Disconnect the harness connected to the remote valve switches. Inspect the female and male pins for corrosion or dirt. Clean the pins thoroughly if any buildup is found.

4. 4

   Replace the Component

   If the multimeter test confirms the Extend Limit Set switch is internally shorted or open, replace the switch. Note: On many Case IH Magnum models, individual armrest switches are integrated into a larger circuit board/module. If the switch cannot be separated, the Armrest Controller module itself must be replaced.

5. 5

   Reassemble

   Reconnect all harnesses securely and reinstall the armrest console cover.

6. 6

   Clear Codes and Test

   Reconnect the battery. Turn the key to the ON position, use the Electronic Service Tool to clear the fault codes, and test the auxiliary remote valve extend limit function to ensure the fault does not return.