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retrieve a list of information (provided by the vehicle manufacturer) from the
vehicle’s on-board computer. This information may include:
• VIN (Vehicle identication Number). It is applicable to model year 2000 and
newer OBD II-compliant vehicles.
• CID (Calibration ID). These IDs uniquely identify the software version(s) for
the vehicle’s control module(s).
• CVN (Calibration Verification Number). CVNs are used to determine if
emission-related calibrations for the vehicle under test have been changed.
One or more CVNs may be returned by the vehicle’s computer.
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