universal bypass module logic

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pts760

Copper - Posts: 403

Joined: December 11, 2009

Location: United States

Posted: January 24, 2012 at 11:56 AM / IP Logged

That is the answer I was looking for. That makes perfect sense. Another question that I have is how is the specific RF code in the chip thats embedded in the key decided? Is it based on the number of windings in the actually pill thats embedded in the key or how does that work?

I drink current, eat ohms, and bleed voltage

howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: January 24, 2012 at 12:07 PM / IP Logged

As far as I know it's an algorithm that randomly changes the code every time the key accesses it.

I think I know where this is going, forget it. universal bypass module logic - Page 2 - Last Post -- posted image.

91stt

Silver - Posts: 564

This member consistently provides reliable information

Joined: May 24, 2006

Location: New Jersey, United States

Posted: January 24, 2012 at 12:20 PM / IP Logged

The code is determined by the chip manufacturer based upon the needs if the car manufacturers. The pill contains a chip & other electronic components. Usually there are windings around the electronics to act as the antenna for the pill. Depending on the chip the code can be encrypted, unencrypted, random code hopping, or a combination.

This information is provided only as a reference.

All circuits should be verified with a digital multi-meter prior to making any connections.

pts760

Copper - Posts: 403

Joined: December 11, 2009

Location: United States

Posted: January 24, 2012 at 3:21 PM / IP Logged

Thanks for everyone's input. I'm glad I could grab more insight on the theory of how the ignition cylinder works with encrypted keys. Thanks again, you guys rock!

I drink current, eat ohms, and bleed voltage

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universal bypass module logic

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