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Knowledge Base:  
How to determine which VATS chip your key has.
Last Updated 10/30/2009
In order to determine which VATS chip number your key has you need to measure the resistance of the chip (Ohms.)
 
  1. Go to a Radioshack or other electronics equipment store and use a Digital Multimeter.
  2. Switch it to measure Ohms (resistance.)
  3. Take the ends of the terminals of the tester and place them on the metal thread at the center of the VATS chip.
  4. Measure the Ohms.  It will be between 0 and 12.
  5. Use this chart to decide which VATS key chip # you need.  Round your number to the nearest value on the chart to determine which VATS chip number your key has.
 

VATS Chip Number

 Ohms
1 0.402
2 0.523
3 0.681
4 0.887
5 1.130
6 1.470
7 1.870
8 2.370
9 3.010
10 3.740
11 4.750
12 6.040
13 7.500
14 9.530
15 11.801


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