Case IH R32 – EHR Control Unit: EHR Lever 3 Active Switch Error

This fault code indicates a malfunction in the active switch or potentiometer for the #3 Electronic Hydraulic Remote (EHR) valve lever. The system has detected that the signal from the #3 remote control lever is missing, out of range, or shorted, preventing the electronic remote from functioning properly.

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

1. 1

   Perform the H5 Switch Test via the instrument cluster display to verify if the controller is receiving a signal from the #3 EHR lever.

2. 2

   Inspect the wiring harness from the armrest controls to the EHR controller and remote valves for pinched wires, corrosion, or loose pins.

3. 3

   Navigate to the H1 menu and attempt to recalibrate the remote valves. If the lever fails to follow the command, the switch is internally faulty.

1. 1

   Disconnect power

   Disconnect the tractor's battery to prevent electrical shorts during repair.

2. 2

   Access the armrest

   Remove the retaining screws on the armrest/side console cover to expose the underside of the EHR control levers.

3. 3

   Remove the faulty switch

   Locate the #3 EHR lever. Disconnect its electrical connector from the main armrest harness. Remove the retaining hardware holding the lever module in place and pull the faulty switch assembly out.

4. 4

   Install the new part

   Seat the new EHR lever into the console, secure it with the retaining hardware, and plug in the electrical connector.

5. 5

   Reassemble

   Reinstall the armrest console cover and reconnect the battery.

6. 6

   Calibrate the new switch

   Enter the diagnostic H-Menu, navigate to H1, and perform the EDC/Remote calibration procedure so the controller can learn the new switch's neutral, raise, and lower detent positions.