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2. 10 Best Free VIN Check Sites To Use Before Buying a Car - AOL

   www.aol.com/finance/10-best-free-vin-check...

   10 Best Free VIN Check Sites. Here is a quick look at ten of the best free VIN check sites. National Insurance Crime Bureau . iSeeCars. CARFAX. Vehicle History. VINFreeCheck. AutoCheck. EpicVIN ...

3. OBD-II PIDs - Wikipedia

   en.wikipedia.org/wiki/OBD-II_PIDs

   VIN Message Count in PID 02. Only for ISO 9141-2, ISO 14230-4 and SAE J1850. Usually the value will be 5. 02: 17 Vehicle Identification Number (VIN) 17-char VIN, ASCII-encoded and left-padded with null chars (0x00) if needed to. 03: 1 Calibration ID message count for PID 04. Only for ISO 9141-2, ISO 14230-4 and SAE J1850.

4. Electronic control unit - Wikipedia

   en.wikipedia.org/wiki/Electronic_control_unit

   An ECU from a Geo Storm. An electronic control unit (ECU), also known as an electronic control module (ECM), is an embedded system in automotive electronics that controls one or more of the electrical systems or subsystems in a car or other motor vehicle.

5. Vehicle identification number - Wikipedia

   en.wikipedia.org/wiki/Vehicle_identification_number

   VIN on a Chinese moped VIN on a 1996 Porsche 993 GT2 VIN visible in the windshield VIN recorded on a Chinese vehicle licence. A vehicle identification number (VIN; also called a chassis number or frame number) is a unique code, including a serial number, used by the automotive industry to identify individual motor vehicles, towed vehicles, motorcycles, scooters and mopeds, as defined by the ...

6. What is a Vehicle Identification Number (VIN)? - AOL

   www.aol.com/finance/vehicle-identification...

   A VIN — or vehicle identification number — is a 17-figure sequence of numbers and letters exclusive to your vehicle. It’s used by entities like the Department of Motor Vehicles, your auto ...

7. On-board diagnostics - Wikipedia

   en.wikipedia.org/wiki/On-board_diagnostics

   VIN (Vehicle Identification Number): Vehicle ID; CALID (Calibration Identification): ID for the software installed on the ECU; CVN (Calibration Verification Number): Number used to verify the integrity of the vehicle software. The manufacturer is responsible for determining the method of calculating CVN(s), e.g. using checksum.