Case IH 10035 – PTO Controller: PTO Controller Failure - ADC locked up

The ADC (Analog-to-Digital Converter) inside the controller has frozen or stopped processing signals, indicating an internal hardware or memory fault.

• MX Magnum
• MX210
• MX230
• MX255
• MX285
• TG Series

1. 1

   Verify the battery voltage, as low battery voltage can cause controller errors.

2. 2

   Locate the PTO Controller and inspect the connector ends (specifically the J1 Gray and J2 Black connectors) for any damaged, bent, or dislocated pins.

3. 3

   Verify that the controller has a good, clean connection to the battery and is properly grounded to the chassis.

4. 4

   Check for intermittent power supply or ground drops to the controller.

1. 1

   Turn off the tractor and disconnect the battery to ensure safety.

2. 2

   Locate the PTO Controller module.

3. 3

   Disconnect the wiring harnesses from the controller and perform the visual pin inspection and voltage/ground checks.

4. 4

   Determine if the fault is an internal defect within the controller itself.

   If power, ground, and wiring integrity are all verified to be good, the ADC is physically locked up/failed.

5. 5

   Remove the mounting hardware securing the defective PTO Controller.

6. 6

   Install the new PTO Controller module.

7. 7

   Reconnect the wiring harnesses, ensuring the connectors are fully seated and locked.

8. 8

   Reconnect the battery, turn the key on, and clear the fault codes to verify the repair.