Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Engine Calibration Label

HOW TO DETERMINE VEHICLE CALIBRATION

EMISSION CALIBRATION LABEL

Attached to all 1993 production vehicles is an Emission Calibration label. This label is attached to the left-hand side door or door post pillar. It identifies the engine year, calibration design, and design revision level. These numbers are used to identify service parts and engine specifications that make up the emission system designed for the vehicle.

Vehicle Calibration Determinator:






CALIBRATION CODE
Use the following to interpret the calibration code from the Emission Calibration Label:
1. MODEL YEAR -This number represents the model year in which the Calibration was first introduced. As shown below, the model year is 1993. (Represented by the Number 3).
2. CALIBRATION DESIGN LEVEL- Represents the design level assigned to the engine (25F).
3. CALIBRATION REVISION LEVEL - Represents the revision level of the calibration (ROO). These numbers will advance as revisions occur.

3-25F-ROO
1- 2 - 3
CALIBRATION CODE