Torque Converter Clutch Break-In Procedure
TORQUE CONVERTER CLUTCH BREAK-IN PROCEDUREIf a new Transmission Control Module is put on the vehicle, the status will be at the start of break-in. This status is acceptable regardless of the mileage on the torque converter. No modification of the break-in status is required.
To properly service these vehicles, it is necessary to use a DRB scan tool to read or reset the break-in status. Perform the following steps with the DRB scan tool to reset the break-in status:
1. Plug the DRB scan tool into the black CCD Bus connector. The connector is located under the instrument panel on the drivers side of the vehicle.
2. Insert the DRB scan tool cartridge into the DRB scan tool.
3. The red and green lights on the DRB scan tool will light up and then begin flashing. Wait until the lights stop flashing before continuing with this procedure.
4. Press the number 4 key (Select System) on the DRB scan tool key pad. Item number 4 will not appear on the DRB scan tool screen unless you scroll down. It is not necessary to scroll down to be able to choose item 4.
5. Press the number 2 on the DRB scan tool key pad (Transmission).
6. Press the number 1 on the DRB scan tool key pad. Wait for the DRB scan tool to perform the following three tests before continuing:
- Bus Test
- Initialize
- Transmission Control Module Part Number
7. Press the number 5 on the DRB scan tool key pad (Adjustments).
8. Press the number 1 on the DRB scan tool key pad (Reset LU Clutch). The DRB scan tool will display one of three screens:
a. LU Clutch Break-in Status: Start
b. LU Clutch Break-in Status: In-progress Press ENTER to Reset Break-in status
c. LU Clutch Break-in Status: Complete Press ENTER to Reset Break-in status
9. If screen (a) appears, the Transmission Control Module is at the beginning of its break-in program. No further action is required.
10. If screen (b) appears, the Transmission Control Module is in the middle of its break-in program. Press the enter key on the DRB scan tool key pad to return the status to the start of break- in.
11. If screen (c) appears, the Transmission Control Module has completed its break-in status program. Press the enter key on the DRIB scan tool key pad to return the status to the start of break-in.
12. After pressing the enter key a second time in step 8 a screen will appear that says (RESET LU CLUTCH ARE YOU SURE?). Press the enter key on the DRB scan tool key pad. The DRB scan tool will then carry out the reset command.
13. After the DRB scan tool completes the reset command, a screen will appear saying LU Clutch Break-In Status has been RESET to Start. This screen will indicate that the reset procedure has been successfully completed.
14. Disconnect the DRIB scan tool from the black CCD Bus connector.