While performing a smog inspection the Vehicle-identification is critical



 Do you proceed with the inspection if the OIS or the EIS if you lose the Vehicle-identification on the O.I.S or E.I.S. You will need to know if you abort the test or continue the test with a written document for the DMV.

Keep in mind on the state examination and the class room examination you will need to know different scenarios.

You are expected to know how to conduct a complete OIS or EIS inspection

Inspectors must follow the EIS or OIS prompts to input the vehicle identification number (VIN), license plate number, and odometer reading. Typically, the remaining vehicle information populates via the Vehicle Information Database (VID) and/or the EIS Vehicle Look-Up Table. The chart on the next page provides details for entering vehicle information.

No person shall enter any vehicle identification information for any vehicle other than the one being tested. Nor shall any person knowingly enter any false information about the vehicle being tested. 


The bar code scanner must be used as the first method of entry. Manual entry must only be used in cases where the vehicle is not equipped with a bar code or the bar code is illegible, and the registration documents are unavailable or do not include a bar code. In these cases, you may proceed with the inspection and manually enter the vehicle identification information, as needed.

• When using the vehicle registration documents to scan vehicle information, you must first verify the VIN shown on the registration document matches the VIN on the vehicle. If the VIN does not match, the inspector shall use the VIN affixed to the vehicle and inform the customer of the mismatch and that it may cause the Department of Motor Vehicles (DMV) not to accept the test results.

• If VID communication failure occurs on the EIS, the inspector must enter all applicable information. However, for a California registered vehicle, inspectors must first verify that the VIN and license plate entries are correct, and check that the EIS is properly connected to the VID. If VIN and plate entries are correct, and communication failure continues, complete the inspection as prompted by the EIS. In these cases, DMV may request a copy of the VIR as proof of certification. Advise the motorist to retain a copy of the VIR throughout the registration process.

• The EIS and OIS will not function without a continuous Internet connection to the VID. Anytime the OIS fails to communicate with the VID, the problem must be fixed before performing an inspection.

• When inspecting a government fleet vehicle, enter the “Government Fleet BAR file number.” Get this number from the government fleet. 


Accuracy is critical to ensure the appropriate test sequences and standards are applied. For all inspections, inspectors must verify that all vehicle information is complete and correct. If not, inspectors must make the necessary corrections.

Each inspector is responsible for the accuracy of the test. Once a certificate is issued it is impossible to void that certificate.

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When entering the VIN manually and there is a VID communication failure on the EIS. Verify that the VIN and license plate entries are correct, and check that the EIS is properly connection for  the VID 

While entering the VIN manually and the EIS says VIN unknown verify that the VIN and license plate entries are correct

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