Case IH 518564-14 - ACM – ACM: Incorrect EHR Lever Configuration

The Armrest Control Module (ACM) does not recognize the configuration, assignment, or calibration of the Electro-Hydraulic Remote (EHR) lever. The electronic signal from the lever does not match the expected parameters, or the lever has lost its software assignment to a specific rear remote valve.

• MAGNUM AFS Connect
• Steiger AFS Connect
• Puma

1. 1

   Verify Lever Assignment on the AFS Connect display to ensure the EHR lever is properly assigned to a rear remote valve. Unassigned levers will lack a color-coded designation.

2. 2

   Check Calibration Status to determine if the EHR lever was recently replaced, or if the ACM was updated/replaced, which necessitates a recalibration.

3. 3

   Inspect electrical connections and wiring between the EHR lever and the Armrest Control Module for any loose pins, corrosion, or wiring damage.

4. 4

   Check for related ACM communication fault codes (e.g., 2818) or voltage codes that might indicate a hardware failure rather than just a configuration issue.

1. 1

   Reconfigure the Lever

   On the AFS Connect display, navigate to Menu > Tractor > Settings > Configurable Controls. Assign the unassigned or incorrectly configured EHR lever to the correct rear remote valve (matching the color-coded stickers on the rear of the tractor).

2. 2

   Perform Calibration

   If the lever is assigned but the code persists (or if the lever/ACM was recently replaced), perform the EHR lever calibration procedure using the Electronic Service Tool (EST) or the onboard display.

3. 3

   Software Update

   If the EHR lever was calibrated and the code returns, download and flash the correct/latest level of software to the ACM, then repeat the calibration procedure.

4. 4

   Replace Component

   If the fault occurs again after software updates and recalibration, the EHR lever itself has an internal hardware failure and must be removed and replaced.