Case IH 130 – TRANS (Transmission Controller): Low range clutch is not calibrated.

The transmission control module has lost the stored calibration values (fill time and engagement pressure parameters) for the low range clutch pack, or a previous calibration procedure was interrupted or failed. Without these parameters, the transmission cannot smoothly or safely engage the low range gear.

• MX Magnum
• STX Steiger
• MX Magnum Series
• TG Series
• Steiger Series
• Puma Series
• Maxxum Series
• Farmall Series

1. 1

   Check that the transmission oil is warmed up above 10°C (50°F) to prevent calibration abort code U19

2. 2

   Ensure the engine RPM is steady and set to the exact calibration speed specified for your model (usually around 1200 RPM) to prevent abort codes U21 or U22

3. 3

   Verify that the shuttle lever is strictly in Neutral (prevents code U23) and that your foot is completely off the clutch/inching pedal (prevents code U26)

4. 4

   Verify there are no active electrical fault codes for the low range clutch solenoid (such as code 109) which would make calibration impossible

1. 1

   Start the tractor and operate it until the transmission fluid reaches normal operating temperature.

2. 2

   Park the tractor on a flat, level surface and engage the parking brake.

3. 3

   Shift the shuttle lever into Neutral and release the clutch pedal completely.

4. 4

   Access the Transmission Calibration menu.

   Depending on the model, this is done either through the tractor's instrument cluster H-Menu (using the display navigation buttons) or by connecting the Case IH Electronic Service Tool (EST) laptop.

5. 5

   Select the calibration routine for the transmission clutches.

6. 6

   Increase the engine throttle to the prompted calibration RPM.

7. 7

   Follow the on-screen prompts to initiate the sequence.

   The TRANS controller will automatically pulse the low range clutch solenoid to measure fill times and engagement pressures.

8. 8

   Save the configuration and cycle the ignition key to lock the values into the module's memory.

   Do this once the screen indicates the low range clutch (and subsequent mid/high/reverse clutches) is successfully calibrated.