New Holland UCM 1212 – UCM (Universal Control Module): Calibration Functions - Ground Drive Calibration Not Complete

This fault code indicates that the semi-automatic ground drive calibration procedure has not been successfully completed. The ground drive calibration is required to calibrate the command current to a nominal pressure and to establish the neutral position of the ground drive swashplate angles.

• L213
• L216
• L218
• L220
• L221
• L223
• L225
• L228
• L230
• L313
• L315
• L318
• L320
• C175
• C227
• C232
• C238
• C327
• C332
• C338

1. 1

   Check for excessive machine movement (more than 1 foot) during calibration, which indicates a mechanical issue like a hydrostatic pump or drive motor failure rather than an electrical fault

2. 2

   Verify that the UCM software is up to date and compatible with the instrument cluster software

3. 3

   Ensure the machine is parked on flat, level ground with no obstacles nearby before attempting the calibration

1. 1

   Park the machine

   Park the machine on a flat, level surface and ensure the area is clear of bystanders and obstacles.

2. 2

   Access calibration menu

   Access the calibration menu via the instrument cluster display screen.

3. 3

   Select calibration function

   Select the "Ground Drive Calibration" function.

4. 4

   Follow prompts

   Follow the on-screen prompts. The procedure is semi-automatic; the UCM will automatically stroke the pumps to find the neutral swashplate angles and nominal pressure command currents.

5. 5

   Monitor for movement

   Monitor the machine for movement. If the machine moves more than 1 foot, abort the calibration and mechanically inspect the hydrostatic drive pumps and drive motors for internal wear or failure.

6. 6

   Verify calibration completion

   If the calibration completes successfully, the fault code will clear.

7. 7

   Replace UCM

   If the calibration repeatedly fails without mechanical symptoms, or if the UCM is unresponsive/internally faulted, the UCM must be replaced and flashed with the latest software using the New Holland Electronic Service Tool (EST).