New Holland NH 1019 – Hitch Controller / Hydraulic Lift Controller: Load sensing pin voltage too low

The controller is receiving a voltage signal from the draft load sensing pin (which measures the pulling force on the 3-point hitch) that is below the acceptable minimum threshold. This is typically caused by an open circuit, a short to ground in the wiring harness, or a complete internal failure of the sensor itself.

• T5.95
• T5.105
• T5.115
• T6030
• T6050
• T6070
• T6080
• T6090
• T7.165S
• T7.170
• T7.175
• T7.185
• T7.190
• T7.200
• T7.210
• T7.225
• TM120
• TM130
• TM140
• TM155
• TM175
• T8 Series
• T9 Series
• TG Series

1. 1

   Inspect the wiring harness connecting the rear hitch load sensing pins to the chassis harness for chafing, pinched wires, or disconnected plugs.

2. 2

   Disconnect the load sensing pin connector, turn the key to the ON position, and use a multimeter to check the reference voltage from the controller (should be approximately 8 Volts).

3. 3

   Check the signal and ground wires for continuity back to the hitch controller, ensuring there is no short to ground.

4. 4

   If the 8V reference and ground are present and the wiring is intact, the fault is internal to the load sensing pin.

1. 1

   Prepare tractor for repair

   Park the tractor on a level surface, lower the 3-point hitch to the ground to remove all tension, and turn off the engine.

2. 2

   Disconnect harness

   Disconnect the electrical harness from the faulty draft load sensing pin on the lower link.

3. 3

   Remove retaining hardware

   Remove the retaining hardware (snap rings, locking bolts, or keeper plates) holding the load sensing pin in place.

4. 4

   Remove old pin

   Carefully drive out the old load sensing pin.

5. 5

   Clean bore

   Clean the bore of the lower link to ensure smooth installation.

6. 6

   Install new pin

   Install the new load sensing pin, secure the retaining hardware, and reconnect the electrical harness.

7. 7

   Calibrate hitch

   Turn on the tractor and perform a Hydraulic Lift Autocalibration to calibrate the new sensor to the hitch controller.

8. 8

   Bypass Option - Disconnect harnesses

   If installing a Draft Load Sensing Pin Elimination Kit (Bypass Kit), disconnect the harnesses from both draft pins.

9. 9

   Bypass Option - Install dummy modules

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

10. 10

    Bypass Option - Secure modules

    Secure the modules out of the way with zip ties. This feeds a fixed, acceptable voltage back to the controller, permanently clearing the NH 1019 code.