New Holland NH 1013 – Hitch Controller (EHR - Electronic Hitch Regulation) or Armrest Controller (ARM): Drop rate potentiometer signal too high

This code indicates that the signal voltage from the drop rate potentiometer (which controls the lowering speed of the rear 3-point hitch) is exceeding the maximum expected threshold, often due to a short to +12 volt. When this fault is active, the tractor's computer cannot accurately determine the operator's requested hitch drop speed, which may cause the hitch to default to a safe, slow drop rate or disable the drop function entirely.

• T6
• T7
• T8
• T9
• T6000
• T7000
• TM
• TS
• TS-A
• TLA
• MXM
• Puma
• Magnum
• TG

1. 1

   Locate the drop rate potentiometer on the right-hand armrest console or side EDC control panel and inspect the 3-pin weather-proof connector for corrosion, pushed-out pins, or moisture.

2. 2

   Use a multimeter to check the signal wire between the potentiometer and the Hitch/Armrest controller for chafing or shorting to a 12V power source.

3. 3

   Verify that the potentiometer is receiving the correct 5V reference voltage and has a solid ground. A lost ground will cause the signal voltage to float high.

4. 4

   Disconnect the sensor and measure the resistance across its sweep. It should show a smooth, linear change in resistance (typically 0-3000 Ohm or 1000 Ohm range) without any dead spots or infinite resistance spikes.

1. 1

   Power Down

   Turn off the tractor, remove the key, and disconnect the battery to prevent electrical spikes.

2. 2

   Access the Sensor

   Remove the trim panels on the armrest or side console to access the underside of the hitch control dials.

3. 3

   Remove the Faulty Potentiometer

   Disconnect the 3-pin wiring harness plug from the sensor. Remove the retaining nut or mounting screws holding the potentiometer to the control dial assembly.

4. 4

   Install the New Part

   Insert the new potentiometer, ensuring the unblocked hole design or keyed shaft aligns correctly with the physical dial. Secure the mounting hardware.

5. 5

   Reconnect

   Plug the 3-pin connector back in and reassemble the console trim. Reconnect the battery.

6. 6

   Calibration

   You must perform a Hydraulic Lift Autocalibration (often associated with code 1024). Follow the specific calibration sequence in your operator's display to teach the controller the new potentiometer's sweep.