Latest Calibration Information

Obtain the latest calibration information for emission-related modules by selecting the link at the bottom of this page. This page can be printed for usage instructions.

Instructions for determining the most recent module calibration released:

1. Find the tear tag on the vehicle. It is a white tag located on the module or in an easily accessible place such as the doorjamb or engine cowl. The tag contains a four-digit letter/number combination (e.g.: VCS0), called the "catchword." Record this value.

2. Open the file attached below, under "Access Latest Calibration Information."

3. Using the arrows and dropdown menus in the file, find the Model, Year, Engine Size, and Engine Type.


NOTE:  If the model year is not listed, use the previous model year.

4. For this vehicle, find the catchword recorded from the tear tag.

5. Check the "TSBPartNum" column. If there is a part number listed there for this catchword, go to step 7.

6. If there is no part number listed in the "TSBPartNum" column, check the "NewPartNum" column. If no new part number is listed, this is the most recent calibration.

7. If there is a new part number or a TSB part number listed, find it in the "PartNum" column.

8. For this part number, check the "NewPartNum" column and determine whether or not a subsequent new part number is listed.

9. Continue the process until no new part number can be found. The final "PartNum" found is the most recent calibration released for this vehicle.

EXAMPLE:
Find Vehicle, Model, Engine Size, and Engine Type = Explorer, MY '02, 4.0L, V6 SOHC
Find Catchword = LAE0

Find associated New Part Num = 1L2F-AGM

Find this new part number in the "PartNum" column

Determine if there is a new part number associated with this part number = 1U7A-BZA

Continue the process until there is no new part number listed.
Most recent calibration for this vehicle = 1U7A-GMA

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