Repair Procedure
REPAIR PROCEDURE1. Check the underside of the hood to verify that there is no label previously installed to indicate that this reprogramming has already been done.
NOTE:
The software for this reflash is the same as the software for TSB-08-55-002REV which modifies the software for poor heater performance at low speeds and/or idle. THE ECM WILL NOT ALLOW YOU TO REPROGRAM WITH THE SAME NEW S/W PART #. A SECOND TIME. Check the underside of the hood for a reprogramming label. If the ROM ID on the label matches the New Software No. listed in the previous chart, then the vehicle's software is to the latest specification and reprogramming is not necessary.
For MEDIC II users only: (MUT III users go to step 5)
2. Verify that the MEDIC-II is at version 4.5 and at download M210 or higher.
If your MEDIC-II Download is below M210, update your MEDIC-II as follows
3. On the MEDIC-II main screen, click on "Maintenance."
4. Click on "Download". After the download completes, click on "Cancel" to exit the "Maintenance" window.
GO TO THE REPROGRAMMING PROCEDURE SHOWN IN THIS BULLETIN.
5. Scan Tool Viewer (STV) ONLY (MEDIC-II USERS go to the Programming Procedure).
Verify that your MUT-III has the most current version of the reprogramming database:
a. Select "Special Function", then select "ECU Reprogramming."
b. Select "Database File Display." The database version is displayed in the top right corner of the screen. Make sure the database version is N08032 or greater.
c. If the database version is N08032 or greater, reprogram the ECM as described in the Programming Procedure.
d. If the database version is less than N08032, you must transfer the new reprogramming data from the Reflash Update CD 03/08 to the MUT-III hard drive as follows:
1. Install Reflash Update CD 03/08 into the PC's DVD-ROM drive.
2. Follow the instructions on the screen. The system will automatically transfer the reprogramming data onto the PC's hard drive.
3. Continue to the Reprogramming Procedure.