How To Perform Vehicle Identification Number (VIN) Writing: Notes

The Vehicle Identification Number (VIN) is stored in the ECM or PCM by the vehicle manufacture. If the VIN to be stored in the ECM or PCM is eliminated fraudulently, the Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check Engine Lamp) illuminates and Diagnostic Trouble Code (DTC) No.P0630 (VIN malfunction) is shown. When the ECM or PCM is replaced, and entry of the VIN necessary due to DTC No. P0630 (VIN malfunction). Enter the VIN in accordance with the procedure as follows: