Case IH 1014 - UCM – UCM: Right-hand load sensing pin - signal too low

The voltage returning from the right-hand load sensing pin (draft pin) to the controller has dropped below the acceptable minimum threshold. This typically points to an open circuit, a broken wire, a short to ground, or a completely failed internal sensor.

• VESTRUM CVX
• Magnum Series (215, 245, 275, 305, 340)
• Steiger Series
• Puma Series
• Maxxum Series
• MX Series (MX100, MX120, MX135, MX150, MX170)
• Legacy Series (7100, 7200, 8900 series)

1. 1

   Inspect the wiring harness and the connector at the right-hand lower link draft pin for physical damage, corrosion, or pulled wires (common due to debris near the hitch).

2. 2

   Disconnect the sensor and use a multimeter to verify the 8V reference voltage and ground at the tractor-side connector.

3. 3

   Check the signal wire for continuity back to the UCM/EDC controller and ensure it is not shorted to the frame (ground).

4. 4

   Perform a swap test: If the left and right load sensing pins are identical, swap their connections. If the fault code changes from 1014 to 1016 (Left-hand signal too low), the pin itself is internally defective. If the code remains 1014, the issue is in the tractor's wiring harness.

1. 1

   Relieve hitch tension

   Park the tractor on a level surface and lower the 3-point hitch completely to relieve all tension and weight on the lower link arms.

2. 2

   Disconnect power

   Turn off the engine and disconnect the battery.

3. 3

   Disconnect harness

   Disconnect the electrical harness from the right-hand load sensing pin.

4. 4

   Remove hardware

   Remove the retaining hardware (snap rings, locking bolts, or keeper plates) securing the draft pin to the hitch assembly.

5. 5

   Remove old pin

   Drive the old pin out. (Note: It may require penetrating oil or a brass punch if it has seized in the bore).

6. 6

   Install new pin

   Clean the bore thoroughly. Install the new load sensing pin, ensuring the alignment notch/flat is oriented exactly as specified in the service manual (orientation is critical for accurate load measuring).

7. 7

   Reassemble

   Reinstall the retaining hardware and reconnect the electrical harness.

8. 8

   Calibrate hitch

   Power on the tractor, clear the fault codes, and perform a hydraulic lift/draft autocalibration (Code 1024 will often trigger, prompting you to perform this calibration after hitch sensor replacement).

9. 9

   Bypass Option - Disconnect harnesses

   If installing a Draft Load Sensing Pin Elimination Kit (for drawbar-only work): Disconnect the harnesses from both the left and right draft pins.

10. 10

    Bypass Option - Install modules

    Plug the elimination modules directly into the tractor's wiring harness.

11. 11

    Bypass Option - Secure modules

    Zip-tie the modules securely out of the way. These modules send a fixed 'dummy' signal to the UCM, permanently disabling the draft sensing function and preventing the 1014 code from returning.