The
#What data does your Vehicle Chassis Number or VIN include?
************ #PART 4************************
#the #check #digit:
9th digit is the check digit, which is used to detect invalid VINs. The number that appears varies and is based on a mathematical formula that the U.S. Department of Transportation developed. and the ninth digit is reserved for the check digit.
this rule is compulsory for vehicles in North America and used fairly consistently even outside. except in the United Kingdom where the check digit is not used.
An overview of the process for calculating a VIN's check digit is as follows:
1. Remove all of the letters from the VIN by transliterating them with their numeric counterparts. Numerical counterparts can be found in the table below.
2. Multiply this new number, the yield of the transliteration, with the assigned weight. Weights can be found in the table below.
3. Sum the resulting products.
4. Modulus the sum of the products by 11, to find the remainder.
5. If the remainder is 10 replace it with X.
Transliterating the numbers
Transliteration consists of removing all of letters and substituting them with their appropriate numerical counterparts. These numerical alternatives can be found in the following chart. I, O and Q are not allowed, and can not exist in a valid VIN; for the purpose of this chart, they have been filled in with N/A (not applicable). Numerical digits use their own values.
Transliteration key: values for VIN
A: 1 B: 2 C: 3 D: 4 E: 5 F: 6 G: 7 H: 8 N/A
J: 1 K: 2 L: 3 M: 4 N: 5 N/A P: 7 N/A R: 9
S: 2 T: 3 U: 4 V: 5 W: 6 X: 7 Y: 8 Z: 9
Weights used in calculation
The following is the weight factor for each position in the VIN. The 9th position is that of the check digit. It has been substituted with a 0, which will cancel it out in the multiplication step.
Position 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
Weight 8 7 6 5 4 3 2 10 0 9 8 7 6 5 4 3 2
Worked example
Consider the hypothetical VIN 1M8GDM9A_KP042788, where the underscore will be the check digit.
Number of
digit 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 11th 12th 13 14 15 16 17
VIN 1 M 8 G D M 9 A _ K P 0 4 2 7 8 8
Value 1 4 8 7 4 4 9 1 _ 2 7 0 4 2 7 8 8
Weight 8 7 6 5 4 3 2 10 0 9 8 7 6 5 4 3 2
Products
(valve X weight) 8 28 48 35 16 12 18 10 0 18 56 0 24 10 28 24 16
1. The VIN's Value is calculated from the above table, this number will be used in the rest of the calculation.
2. Copy over the weights from the above table.
3. The products row is a result of the multiplication of the vertical columns: Value and Weight.
4. The products (8,28,48,35..24,16) are all added together to yield a sum of 351
5. One of the following operations:
351 % 11 = 10 (where % is a modulo operator)
351 ÷ 11 = 31 10/11
351 ÷ 11 = 31.9090 remender is 10
6. The check digit is 10, so it has been transliterated into X.
With a check digit of 'X' the VIN: 1M8GDM9A?KP042788 is written with the check bit as: 1M8GDM9AXKP042788.
reference: wikibook
for more and clear info please watch attached video
you can check your vin on this websites linked below
https://www.cjponyparts.com/resources...
https://vpic.nhtsa.dot.gov/decoder/Ch...