New Holland EHR 4218 – EHR (Electronic Hitch / Hydraulic Remote) Control Module: Rear Remote No.3 - Valve Spool Not Calibrated

The electronic controller has not successfully learned or stored the physical travel limits (end-of-stroke positions) for the spool inside the #3 rear electro-hydraulic remote valve.

• New Holland T6 Series
• New Holland T7 Series
• New Holland T8 Series
• New Holland T9 Series
• New Holland TG Series
• New Holland T6000 Series
• New Holland T7000 Series

1. 1

   Stroke the #3 valve back and forth manually using the cab controls to clear internal debris or free up a sticking spool

2. 2

   Look for other active EHR fault codes (e.g., voltage too high/low, open circuits, or checksum failures) which indicate a wiring harness, connector, or solenoid failure

3. 3

   Verify the correct CAN address is assigned to the valve if the valve stack was recently serviced, replaced, or moved

4. 4

   Disconnect and inspect the electrical harness at the #3 remote valve solenoid for corrosion, moisture, or backed-out pins

1. 1

   Prepare tractor

   Park the tractor on a level surface away from obstacles, firmly apply the parking brake, and block the wheels.

2. 2

   Disconnect implements

   Disconnect all implements and hydraulic hoses from the rear remote couplers.

3. 3

   Neutralize controls

   Ensure all EHR program switches and levers are in the OFF/Neutral position.

4. 4

   Access diagnostic menu

   Access the tractor's diagnostic menu. On some models, this requires plugging a diagnostic connector tool (e.g., CNH special tool 380000843 or 380001903) into the diagnostic socket. On others, it can be accessed via the in-cab display.

5. 5

   Navigate to calibration

   Navigate the instrument cluster menus to the 'H1' or 'Rear EHR' calibration menu. The display should show 'CAL'.

6. 6

   Initiate calibration

   Select the #3 remote valve. Initiate the calibration (on many New Holland models, this is done by depressing the program switch for the specific lever 3 times).

7. 7

   Allow automatic calibration

   The system will automatically stroke the valve to learn the end-of-travel limits.

8. 8

   Retry calibration if failed

   If the calibration fails the first time, stroke the valve back and forth for a while to warm the hydraulic oil and clear debris, then attempt the calibration again.

9. 9

   Replace valve components

   If the valve repeatedly fails to calibrate, the proportional valve actuator or the valve slice itself is likely internally damaged and requires replacement.