Case IH U3 – EHR (Electronic Hydraulic Remotes) Controller: Flow Control For Lever 3 Set Incorrectly During Calibration

This code is triggered during the calibration procedure of the Electronic Hydraulic Remotes (EHR). It indicates that the system detected the flow control dial or setting for remote valve #3 was not in the required position (typically the minimum flow position) when the calibration sequence for that specific lever was executed.

• MXM
• MXM Series
• MXM 120
• MXM 130
• MXM 140
• MXM 155
• MXM 175
• MXM 190

1. 1

   Verify the flow control knob for Lever 3 is physically capable of turning to the minimum/maximum limits and isn't mechanically bound

2. 2

   Perform a Switch Test (H-Menu, H5) to verify that the EHR controller is accurately reading the inputs from the armrest lever and flow control potentiometers

3. 3

   Check for neutral drift: if the tractor frequently asks you to 'move EHR to neutral' when the lever is already physically centered, the potentiometer is failing

4. 4

   Test the wiring harness continuity from the armrest controls to the EHR controller, and from the controller to the rear remote valves, to rule out a short or open circuit

1. 1

   Hold the program key on the A-post display while turning the ignition key to the ON position.

2. 2

   Navigate to the ARM section / H1 menu for EHR calibration.

3. 3

   When the system prompts you to calibrate Lever 3, set the flow control dial for Lever 3 to the correct position (minimum flow).

4. 4

   Pull the lever back into the raise detent position, then push it forward to the lower position as prompted by the display.

5. 5

   Return the lever to the neutral position.

6. 6

   Once the calibration reads 'END' or finishes, turn off the ignition key and wait at least 30 seconds before restarting the tractor.

   This ensures the new calibration values are saved to the non-volatile memory.