Case IH 131 – Transmission Controller (TRANS / TCU): Mid range clutch is not calibrated

This code indicates that the transmission controller does not have a valid calibration value stored for the mid-range clutch. This typically occurs if a previous calibration procedure was interrupted, failed to complete successfully, or if the transmission controller lost its memory. It can also appear after replacing transmission components like the clutch pack, solenoid, or the controller itself.

• MX Magnum
• STX Steiger
• Magnum Series
• Magnum 180-340
• Maxxum Series
• MXM 120-190
• Puma Series
• Steiger / STX Series
• TG Series
• TG210
• TG230
• TG255
• TG285
• T8 series

1. 1

   Check for related electrical faults (e.g., active solenoid fault codes like TRANS code 111 or 2348 indicating the mid-range clutch solenoid or wiring has failed).

2. 2

   Check for internal leaks by monitoring transmission pressures (low pressure in speeds 7, 8, 9, 10, 11, 12, R3, and R4 indicates mechanical mid-range clutch leakage).

3. 3

   Verify transmission fluid temperature is between 60°C and 105°C (140°F - 221°F) as required for calibration.

1. 1

   Prepare the Tractor

   Park the vehicle on a flat, open surface free of obstacles. Engage the parking brake. Warning: The machine may move automatically during the calibration process.

2. 2

   Warm the Transmission

   Operate the tractor until the transmission oil temperature is above 60°C (140°F).

3. 3

   Enter Configuration Mode

   Turn the key switch to the ON position. Within 10 seconds, press and hold the "Enter" key on the keypad until the CONFIG MENU displays.

4. 4

   Navigate to the TCU

   Use the down arrow key to highlight TCU in the menu list, then press Enter.

5. 5

   Access Transmission Setup

   Press the down arrow until the ETC MENU screen displays, press Enter to access the TRANS VIEW screen, then arrow down to the TRANS SETUP screen and press Enter.

6. 6

   Select Clutch Calibration

   The Cltch Cal (clutch calibration) screen will display. Press Enter.

7. 7

   Verify Temperature

   The Oil Deg screen will report the current hydraulic fluid temperature in Celsius. If it is within the 60 - 105°C range, press Enter to proceed.

8. 8

   Run Calibration

   Follow the on-screen prompts to calibrate the mid-range clutch. The controller will automatically modulate the solenoid to determine the precise fill time and hold pressure.

9. 9

   Complete and Test

   If the calibration completes successfully, the code will clear. If you receive a "U" error code (Calibration Error) during the process, consult the service manual for the specific U-code to identify the mechanical or electrical failure preventing calibration.