Case IH 518563-00 - ACM – ACM: Internal failure in EHR lever 5

The "-00" failure mode indicates a severe internal hardware or circuitry failure within the lever itself (likely the internal encoder or potentiometer), meaning the module can no longer read a valid position signal from this specific lever.

• MAGNUM AFS Connect
• Case IH Magnum AFS Connect series
• Case IH Steiger AFS Connect series
• Puma series
• Maxxum series

1. 1

   Check if the EHR lever was recently calibrated. If not, perform the EHR lever calibration procedure via the AFS Pro display

2. 2

   If already calibrated, repeat the EHR lever calibration procedure and verify that the tractor has the correct level of software

3. 3

   Inspect the wiring harness and connectors between EHR lever E (Lever 5) and the Armrest Control Module for loose pins, corrosion, or pinched wires that could simulate an internal short or open circuit

4. 4

   Ensure the ACM configuration is correct and that EHR lever 5 is properly assigned to a remote valve in the display settings

1. 1

   Turn off the tractor, apply the parking brake, and disconnect the battery.

2. 2

   Remove the retaining screws for the armrest control panel cover to access the internal components of the MultiControl Armrest.

3. 3

   Locate the EHR lever bank and specifically identify EHR Lever E (Lever 5).

4. 4

   Carefully disconnect the electrical wiring harness connector from the faulty lever.

5. 5

   Remove the mounting hardware/screws securing the lever to the armrest console.

6. 6

   Install the new EHR lever and secure it with the mounting hardware.

7. 7

   Reconnect the electrical wiring harness to the new lever.

8. 8

   Reassemble the armrest control panel cover.

9. 9

   Reconnect the battery and turn the key to the ON position.

10. 10

    Perform the EHR lever calibration procedure using the tractor's diagnostic display so the ACM can learn the minimum, maximum, and neutral detent positions of the new lever.

    Crucial Final Step