Case IH U64 – Cab Control Module (CCM) / Armrest Controller / Electronic Management System: Lever No. 4 not in neutral

Triggered by the tractor's electronic management system when a technician or operator attempts to initiate a calibration procedure (such as a Front Hitch, Steering, or Transmission calibration) while the #4 auxiliary remote valve lever is physically or electronically registered as being out of the neutral position.

• Puma/Mid Range Magnum
• Maxxum
• Puma series (140, 165, 180, 195, 210, 225 CVX)
• Magnum series (MX210, MX230, MX255, MX285)
• Farmall series (40, 45, 50, 115U)
• Maxxum series

1. 1

   Visually and physically check that Lever No. 4 on the armrest console is resting completely in the center/neutral detent.

2. 2

   Ensure the tractor is completely stationary, the parking brake is firmly applied, and the ground speed display reads zero.

3. 3

   Check the diagnostic sub-system screen for the 'Aux 4th remote valve LEVER potentiometer' to see if the voltage sweep is stuck or reading out of range.

1. 1

   Reset the Lever

   Move Lever No. 4 out of its current position and firmly seat it back into the neutral position.

2. 2

   Restart Calibration

   Begin the calibration procedure (e.g., Front Hitch or Steering calibration) from the beginning.

3. 3

   Test the Potentiometer

   If the system still throws U64 with the lever centered, access the armrest console internals.

4. 4

   Replace Faulty Component

   If the diagnostic screen confirms the lever's potentiometer is failing to read 'neutral', remove and replace the Lever No. 4 potentiometer/switch assembly.

5. 5

   Clear Codes

   Clear the stored fault codes and re-run the calibration.