Electronically Modulated Converter Clutch (EMCC) Reset

Reset EMCC (Electronically Modulated Converter Clutch)

NOTE: The EMCC break-in function applies to 1993-1994 model year vehicles with 41TE and 42LE transaxies only. This option is not available for 1993 service TCMs for prior model year vehicles.

NOTE: The EMCC break-in function is introduced in 1993 model year vehicles having 41TE and 42LE transaxles. This function is targeted to eliminate EMCC shudder during partial engagement operation. It will properly condition the EMCC prior to controlling the torque converter at low levels of torque converter slip.

Service and production TCMs maintain break-in status in three phases as follows:
- Start phase (0 - 500 miles) - no partial engagement of the EMCC Is available; only full engagement is available.
- In progress (500 - 1500 miles) - partial engagement of the EMCC with progressive slip based on mileage.
- Complete (over 1500 miles) - partial engagement of the EMCC with 60 rpm slip.

The EMCC reset function should be performed:
- If the torque converter has been replaced on the vehicle.
- After moving a TCM from one vehicle to another.
NOTE: Moving a TCM from one vehicle to another is not a recommended practice.

The EMCC break-in status can be checked or reset by using the Tool Mode Super Cartridge following the steps below.

1. With the super cartridge, move through the program down to the 42LE system menu.
2. Select the "Adjustments" function.
3. Select the "EMCC Reset' function. The DRB will now display "Break-In Status". To exit this screen, press the ATM key on the DRB key pad. To reset the EMCC status, continue with the procedure.
4. Press the ENTER key to reset the EMCC break-In status.
5. Press the ENTER key again after the "Are You Sure?~ prompt.

NOTE: The EMCC break-in status should now be in the start phase. Verify the status after reset.

Notes About EMCC Break-In
- Always reset the EMCC break-In status after replacing the EMCC pack material or the torque converter.
- If an unused TCM is removed from one vehicle and installed on another, the EMCC break in status must be reset. NOTE: Swapping of production TCMs is not a recommended practice.
- Allowing a TCM that is in the "In-Progress" or "Complete" phase to operate in a vehicle with new EMCC clutch material or a new torque converter may result in poor EMCC shift quality and damage to the torque converter clutch. Allowing a TCM that is in the "Complete" phase to operate in a vehicle with an "In-Progress" phase EMCC clutch material or torque converter may have the same results.